Story v. Woodbury ( 2015 )


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    THOMAS STORY v. TOWN OF WOODBURY ET AL.
    (AC 37111)
    DiPentima, C. J., and Mullins and Bear, Js.
    Argued May 14—officially released September 15, 2015
    (Appeal from Workers’ Compensation Review Board.)
    Colette S. Griffin with whom was Chris Holland, for
    the appellants (defendants).
    Robert S. Kolesnik, Sr., with whom was Stephanie
    E. Cummings, for the appellee (plaintiff).
    Opinion
    MULLINS, J. The defendant town of Woodbury1
    appeals from the decision of the Workers’ Compensa-
    tion Review Board (board) affirming the finding and
    decision of the Workers’ Compensation Commissioner
    for the Fifth District (commissioner). On appeal, the
    defendant claims that there was insufficient evidence
    to support the commissioner’s finding that the hearing
    loss suffered by the plaintiff, Thomas Story, arose out
    of his work related injury, and, consequently, the board
    erred in affirming the commissioner’s decision. We con-
    clude that the board properly determined that the evi-
    dence was sufficient. Accordingly, we affirm the
    decision of the board.
    The record reveals the following relevant facts and
    procedural history. On October 21, 2002, the plaintiff,
    who at the time was a police officer employed by the
    defendant, was directing traffic at a construction site.
    While doing so, he was struck by a car and injured.
    Specifically, the car’s right front fender struck his right
    knee and lower torso. When the impact spun the plain-
    tiff around, the car’s passenger side mirror struck his
    right elbow. The car continued moving, and the plain-
    tiff’s head and neck ‘‘violently twisted side to side’’ as
    he spun along the side of the car, remaining on his feet.
    Once the car had stopped, the plaintiff had a brief
    exchange with the driver before calling for another
    officer and an ambulance. At that point, the plaintiff
    was beginning to feel dizzy and to feel pain in his lower
    back, neck, elbow, and knees. An ambulance trans-
    ported the plaintiff to the emergency room, where he
    reported neck, back, knee, and elbow injuries but did
    not complain to medical personnel of dizziness. Both
    of the plaintiff’s knees eventually required surgery.2
    Four days after the accident, when the plaintiff saw
    his primary care physician, Charles McNair, he exhib-
    ited normal neck contour and posture and a full range
    of motion in his neck, without apparent pain or discom-
    fort. Approximately two months later, on December 17,
    2002, the plaintiff again saw McNair and denied feeling
    any dizziness at that time. Sometime after the accident,
    the plaintiff began receiving complaints from his wife
    and friends about his hearing. Thereafter, the plaintiff
    reported to McNair that he had been experiencing a
    high-pitched buzzing in his ears and dizziness. As a
    result, although McNair did not record the plaintiff’s
    report in writing, McNair did refer the plaintiff to Victor
    Gotay, an ear, nose, and throat specialist.
    On January 8, 2004, the plaintiff met with Gotay.
    The plaintiff told Gotay that since the accident, he had
    experienced ringing in both ears, being off balance, and
    hearing loss. Gotay evaluated the plaintiff and diag-
    nosed him with vertigo syndrome3 and tinnitus.4 Gotay
    ordered a hearing test, which showed high frequency
    hearing loss in both of the plaintiff’s ears. Gotay also
    ordered an electronystagmogram5 that was performed
    on February 5, 2004, and showed abnormal results.
    Gotay opined to a reasonable degree of medical proba-
    bility that the plaintiff’s hearing loss and loss of balance
    were caused by the accident when he sustained a laby-
    rinthine concussion.6
    At the defendant’s request, the plaintiff submitted to
    independent medical examinations by two ear, nose,
    and throat specialists. The first was performed by Wil-
    liam Lehmann. After Lehmann examined the plaintiff,
    he opined that ‘‘there is no plausible reason why one
    would attribute [the plaintiff’s hearing loss and tinnitus]
    to the accident in question.’’7
    When Lehmann subsequently retired, the plaintiff
    submitted to the second independent medical examina-
    tion by ear, nose, and throat specialist John Kveton.
    On the basis of his review of records provided by coun-
    sel and his evaluation of the plaintiff, Kveton opined,
    to a reasonable degree of medical probability, that the
    plaintiff did not suffer a labyrinthine concussion as a
    result of the accident, nor was the accident a significant
    factor in the plaintiff’s claims of hearing loss, ringing
    in the ears, or vertigo.
    Kveton testified at his deposition that it ‘‘would play a
    role in [his] assessment’’ of causation if medical records
    closest in time to such an accident did not contain
    reports of ringing in the ears, dizziness, or vertigo,
    which are symptoms that he would expect a primary
    care physician to note in a patient’s chart. Kveton
    opined that ‘‘[a] labyrinthine concussion would occur
    with some type of head trauma and [the plaintiff] did
    not indicate that he had fallen on his head.’’ He also
    stated that the type of mild high frequency hearing loss
    the plaintiff exhibited usually is caused by chronic noise
    exposure rather than the orthopedic injury the plaintiff
    had sustained. Kveton’s examination of the plaintiff
    indicated that his inner ear’s balance mechanism was
    functioning properly.
    On September 24, 2012, and October 10, 2012, the
    commissioner presided over a formal hearing at which
    the plaintiff appeared and testified. The reports and
    deposition testimony of Gotay and Kveton were admit-
    ted into evidence. The commissioner issued a finding
    and decision in which he concluded that the plaintiff
    suffered a compensable hearing loss as a result of the
    work related injury sustained on October 21, 2002. The
    commissioner found the plaintiff’s testimony to be
    ‘‘fully credible and persuasive.’’ The commissioner
    found Gotay’s testimony, opinions, and reports to be
    ‘‘fully credible and persuasive,’’ but did not find Kvet-
    on’s testimony, opinions, and reports or Lehmann’s con-
    clusion to be ‘‘fully credible and persuasive.’’
    The defendant filed a motion to correct the commis-
    sioner’s finding and decision, which the commissioner
    denied. The defendant then appealed to the board,
    arguing that the commissioner improperly relied on
    Gotay’s opinion because it was ‘‘mere speculation or
    conjecture and not supported by the subordinate facts.’’
    The board affirmed the commissioner’s finding and
    decision. The board concluded that Gotay’s deposition
    testimony ‘‘reflects a number of statements and answers
    by . . . Gotay that could support the [commissioner’s]
    inference that . . . Gotay’s opinion as to causation was
    not merely speculative or based in conjecture . . . .’’
    (Footnote omitted.) The board also concluded that
    Gotay’s opinion was based on his examination of the
    plaintiff, the plaintiff’s history, various tests, and
    Gotay’s expertise and experience. This appeal followed.
    Additional facts will be provided as necessary.
    The defendant makes two claims on appeal: (1) that
    the commissioner improperly relied on Gotay’s expert
    opinion, and (2) that the commissioner should have
    relied on Lehmann and Kveton’s expert opinions instead
    of on Gotay’s expert opinion. We are not persuaded.
    We begin by setting forth the applicable standard of
    review. ‘‘The principles that govern our standard of
    review in workers’ compensation appeals are well
    established. . . . The board sits as an appellate tribu-
    nal reviewing the decision of the commissioner. . . .
    [T]he review [board’s] hearing of an appeal from the
    commissioner is not a de novo hearing of the facts.
    . . . [T]he power and duty of determining the facts
    rests on the commissioner . . . . [T]he commissioner
    is the sole arbiter of the weight of the evidence and the
    credibility of witnesses . . . . Where the subordinate
    facts allow for diverse inferences, the commissioner’s
    selection of the inference to be drawn must stand unless
    it is based on an incorrect application of the law to
    the subordinate facts or from an inference illegally or
    unreasonably drawn from them. . . .
    ‘‘This court’s review of decisions of the board is simi-
    larly limited. . . . The conclusions drawn by [the com-
    missioner] from the facts found must stand unless they
    result from an incorrect application of the law to the
    subordinate facts or from an inference illegally or unrea-
    sonably drawn from them. . . . [W]e must interpret
    [the commissioner’s finding] with the goal of sustaining
    that conclusion in light of all of the other supporting
    evidence. . . . Once the commissioner makes a factual
    finding, [we are] bound by that finding if there is evi-
    dence in the record to support it.’’ (Internal quotation
    marks omitted.) Jones v. Connecticut Children’s Medi-
    cal Center Faculty Practice Plan, 
    131 Conn. App. 415
    ,
    423–24, 
    28 A.3d 347
    (2011).
    I
    The defendant first claims that the commissioner’s
    finding that the plaintiff’s hearing loss resulted from
    the accident was neither legally correct nor supported
    by the evidence because the commissioner relied on
    Gotay’s expert opinion. It argues that the commission-
    er’s reliance on Gotay’s opinion was improper for two
    interrelated reasons: the opinion was grounded in spec-
    ulation and conjecture, and it was not supported by
    subordinate facts. We disagree.
    ‘‘To recover under the [Workers’ Compensation Act,
    General Statutes § 31-275 et seq.], an employee must
    [prove] that the injury claimed arose out of the employ-
    ee’s employment and occurred in the course of the
    employment. . . . [I]n Connecticut traditional con-
    cepts of proximate cause constitute the rule for
    determining . . . causation [in a workers’ compensa-
    tion case]. . . . An actual cause that is a substantial
    factor in the resulting harm is a proximate cause of
    that harm.’’ (Citation omitted; footnote omitted; internal
    quotation marks omitted.) Marandino v. Prometheus
    Pharmacy, 
    294 Conn. 564
    , 591–92, 
    986 A.2d 1023
    (2010).
    ‘‘This causal connection must be based [on] more than
    conjecture and surmise.’’ (Internal quotation marks
    omitted.) DiNuzzo v. Dan Perkins Chevrolet Geo, Inc.,
    
    294 Conn. 132
    , 142, 
    982 A.2d 157
    (2009).
    ‘‘If supported by evidence and not inconsistent with
    the law, the . . . [c]ommissioner’s inference that an
    injury did or did not arise out of and in the course of
    employment is conclusive. No reviewing court can then
    set aside that inference because the opposite one is
    thought to be more reasonable; nor can the opposite
    inference be substituted by the court because of a belief
    that the one chosen by the . . . [c]ommissioner is fac-
    tually questionable.’’ (Internal quotation marks omit-
    ted.) Sapko v. State, 
    305 Conn. 360
    , 385, 
    44 A.3d 827
    (2012).
    ‘‘When . . . it is unclear whether an employee’s
    [condition] is causally related to a compensable injury,
    it is necessary to rely on expert medical opinion. . . .
    Unless the medical testimony by itself establishes a
    causal relation, or unless it establishes a causal relation
    when it is considered along with other evidence, the
    commissioner cannot reasonably conclude that the
    [condition] is causally related to the employee’s employ-
    ment. . . . [E]xpert opinions must be based [on] rea-
    sonable probabilities rather than mere speculation or
    conjecture if they are to be admissible in establishing
    causation. . . . To be reasonably probable, a conclu-
    sion must be more likely than not. . . . Whether [a]n
    expert’s testimony is expressed in terms of a reasonable
    probability that an event has occurred does not depend
    [on] the semantics of the expert or his use of any partic-
    ular term or phrase, but rather, is determined by looking
    at the entire substance of the expert’s testimony.’’ (Cita-
    tions omitted; internal quotation marks omitted.)
    DiNuzzo v. Dan Perkins Chevrolet Geo, 
    Inc., supra
    , 
    294 Conn. 142
    –43.
    The defendant claims that Gotay’s opinion was based
    on speculation and conjecture because Gotay admitted
    that he had not reviewed McNair’s records or the Water-
    bury Hospital medical records even though those
    records, which documented the plaintiff’s symptoms
    closest in time to the accident, might have included
    ear, nose, and throat related complaints.
    The defendant’s argument boils down to this: The
    medical records closest in time to the accident do not
    show that the plaintiff complained of dizziness and hear-
    ing loss at that time. Because these records do not
    show complaints of dizziness and hearing loss, those
    symptoms did not exist then and only developed later.
    Furthermore, according to Kveton, the absence of such
    symptoms immediately following the accident would
    be significant to a conclusion regarding causation.
    Therefore, because Gotay did not review those records,
    his opinion that the plaintiff’s hearing loss resulted from
    a labyrinthine concussion caused by the accident could
    only be speculative. We are not persuaded.
    The defendant argues that the present appeal is con-
    trolled by DiNuzzo v. Dan Perkins Chevrolet Geo, 
    Inc., supra
    , 
    294 Conn. 132
    . In DiNuzzo, the plaintiff’s expert
    opined that the weight gain and use of pain medication
    of the plaintiff’s decedent following a work related acci-
    dent had prevented him from exercising and, therefore,
    hastened his death. The expert attributed the death to
    a heart attack caused by atherosclerotic heart disease.
    DiNuzzo v. Dan Perkins Chevrolet Geo, Inc., 99 Conn.
    App. 336, 339–40, 
    913 A.2d 483
    (2007), aff’d, 
    294 Conn. 132
    , 
    982 A.2d 157
    (2009). Neither an autopsy nor a
    postmortem examination had been performed on the
    decedent’s body. 
    Id., 339. The
    testimony of the plaintiff’s
    expert, therefore, was the only evidence that the dece-
    dent had atherosclerotic heart disease. 
    Id., 344 n.3.
       On cross-examination, the plaintiff’s expert in
    DiNuzzo was shown records of the decedent’s hospital-
    ization, one month before his death, for side effects
    of the drug Interferon. 
    Id., 346. The
    plaintiff’s expert
    admitted that he did not know that the plaintiff was
    taking Interferon or that he had been hospitalized. 
    Id., 346 n.5.
    Upon reviewing the hospital records, he con-
    ceded that the decedent’s symptoms on the night of his
    death could have been attributable to the drug, that a
    number of other possible causes of death existed, and
    that it was impossible to pinpoint the actual cause of
    the decedent’s death. 
    Id., 344–45. This
    court reversed the board’s decision affirming
    the commissioner’s award of widow’s benefits to the
    plaintiff. 
    Id., 347. We
    concluded that ‘‘[t]he reality is
    that it was not possible to determine with any reason-
    able degree of probability the cause of the decedent’s
    death given the factual gaps in the record.’’ 
    Id., 346. The
    refore, ‘‘there were insufficient subordinate facts
    before the commissioner from which he reasonably
    could make . . . a finding [that the decedent’s death
    was the result of a work related injury].’’ 
    Id., 337. The
    Supreme Court affirmed our decision, noting that
    ‘‘[t]he inadequacy of [the] testimony [of the plaintiff’s
    expert] is compounded by the fact that . . . [he]
    acknowledged . . . that when he gave his opinion . . .
    he was not aware that the decedent had been hospital-
    ized approximately one month before his death for cer-
    tain side effects of Interferon.’’ (Citation omitted.)
    DiNuzzo v. Dan Perkins Chevrolet Geo, 
    Inc., supra
    , 
    294 Conn. 145
    . Moreover, even prior to being shown the
    decedent’s hospital records, the plaintiff’s expert had
    admitted that he could testify only as to how the dece-
    dent’s symptoms on the night of his death might ‘‘ ‘con-
    ceivably’ ’’ be consistent with a heart attack. 
    Id. The defendant
    in the present case urges that DiNuzzo
    is controlling because ‘‘a primary reason that the Appel-
    late and Supreme Courts found the medical opinion at
    issue in DiNuzzo unreliable was that the witness relied
    upon by the . . . commissioner did not consult rele-
    vant medical records prior to issuing his opinion on
    causation . . . .’’ (Internal quotation marks omitted.)
    For similar reasons, the defendant relies on Jones v.
    Connecticut Children’s Medical Center Faculty Prac-
    tice 
    Plan, supra
    , 
    131 Conn. App. 415
    .
    In Jones, the commissioner credited the opinion of
    the plaintiff’s expert that the plaintiff’s neurogenic blad-
    der condition was the result of a work related motor
    vehicle accident. We affirmed the board’s conclusion
    that this credibility determination could not stand in
    light of the commissioner’s contradictory finding that
    a neurologist’s diagnosis of the plaintiff, which was
    the principal basis for the expert’s opinion, was not
    credible. As the board reasoned, ‘‘[h]ad the . . . com-
    missioner found . . . [the neurologist’s] opinion per-
    suasive, it might have been possible to uphold the trier’s
    finding relative to the credibility of . . . [the plaintiff’s
    expert] regarding the causation of the [plaintiff’s] neuro-
    genic bladder. However, the . . . commissioner ulti-
    mately determined . . . [the neurologist’s] opinion
    was not persuasive and, further, that the evidentiary
    record was insufficient to determine that the [plaintiff]
    suffered from a concussion, post-concussive syndrome,
    or any other neurological deficits. [Accordingly] . . .
    we are unable to affirm the . . . commissioner’s find-
    ing that . . . [the plaintiff’s expert] was credible rela-
    tive to her conclusion that the [plaintiff] developed a
    neurogenic bladder as a result of the motor vehicle
    accident.’’ (Emphasis omitted; internal quotation marks
    omitted.) 
    Id., 431. The
    commissioner’s reason for discrediting the neu-
    rologist’s underlying diagnosis in Jones is particularly
    pertinent to the present case. Specifically, we observed
    that ‘‘the commissioner expressly discredited [the neu-
    rologist’s] opinions on the basis of the flawed medical
    history that he had received from the plaintiff.’’ 
    Id., 424 n.7.
    Indeed, ‘‘[t]he commissioner . . . found that the
    plaintiff provided [her] various physicians with incon-
    sistent histories regarding her motor vehicle accident
    and that the credibility and persuasiveness of each phy-
    sician was directly related to the accuracy of the history
    given by the plaintiff.’’ (Internal quotation marks omit-
    ted.) 
    Id., 426. In
    Jones, we found it significant that on cross-exami-
    nation, the plaintiff’s expert conceded that she had not
    reviewed emergency room records or reports of the
    plaintiff’s independent medical examinations. Never-
    theless, we emphasized that the commissioner’s credi-
    bility determination was undermined principally by his
    finding relating to the neurologist’s reliance on the
    plaintiff’s flawed medical history and its adverse impact
    on the neurologist’s credibility. 
    Id., 431. Furthermore,
    we noted the expert’s express concession that her opin-
    ion would change if she discovered that either the neu-
    rologist or the plaintiff had provided inaccurate
    information. 
    Id., 432. Because
    the commissioner’s other
    credibility determinations suggested the strong possi-
    bility that the expert’s review of medical records would
    undermine her opinion, we concluded that her opinion
    was based on speculation and conjecture. 
    Id., 432. Both
    of the foregoing cases are distinguishable from
    the facts presented here. In the present case, Gotay,
    unlike the expert in DiNuzzo, based his opinion on
    his own examination of the plaintiff and the results of
    medical tests that he had commissioned. In addition,
    although Gotay conceded that he did not review the
    reports of McNair and Waterbury Hospital before for-
    mulating his opinion, the fact that they contained no
    complaints of dizziness or hearing loss did not cause
    him to waver in his opinion. Rather, Gotay explained
    the general insignificance of the timing of the plaintiff’s
    symptoms as it related to causation.8 He likewise
    explained the insignificance of McNair’s reports, testi-
    fying that because McNair is a ‘‘general practitioner
    . . . not an [ear, nose, and throat] specialist . . . he
    is not going to dwell on dizziness, tinnitus, or hearing
    loss [and] . . . his records are not going to be of any
    value, whatsoever, when we’re dealing with this issue
    . . . .’’ He also testified that the record of ‘‘[o]ne emer-
    gency room visit’’ was ‘‘not enough’’ to sway his opinion.
    Furthermore, unlike in Jones, here there is no under-
    lying adverse credibility determination by the commis-
    sioner to undermine Gotay’s opinion regarding
    causation. On the contrary, the commissioner here fully
    credited the plaintiff’s testimony regarding his medical
    history, which is consistent with the history the plaintiff
    gave to Gotay. Indeed, another significant distinguish-
    ing feature in the present case is that Gotay did not
    merely rely on the history provided by the plaintiff or
    on another physician’s prior diagnosis. Rather, as he
    testified, he formulated an opinion only after conduct-
    ing his own examination of the plaintiff, performing
    tests, and interpreting the results in light of his training
    and experience.
    Finally, we note that the defendant assumes, incor-
    rectly, that the plaintiff’s symptoms must not have
    existed since the accident because they were not
    reflected in McNair’s and Waterbury Hospital’s records.
    The plaintiff testified before the commissioner, how-
    ever, that he ‘‘had been experiencing ringing and buzz-
    ing . . . from the time of the accident, but it was
    secondary to all my other problems. It wasn’t a primary
    concern of mine. . . . I was expecting it to go away.
    I never brought it up to . . . McNair because I always
    thought it would just disappear.’’
    Thus, this is not a case in which, as in DiNuzzo, the
    only evidence linking the plaintiff’s hearing loss to the
    accident is the expert’s opinion, or, as in Jones, the
    expert’s opinion rests on a foundation the commis-
    sioner determined was unsound. To the contrary,
    Gotay’s opinion was based on the plaintiff’s account
    of the accident, which the commissioner found to be
    credible, as well as his own examination of the plaintiff
    and the results of tests he conducted on the plaintiff. We
    cannot, therefore, conclude that Gotay’s expert opinion
    was based on speculation and conjecture.
    The second of the defendant’s two interrelated argu-
    ments is that Gotay’s opinion was not supported by
    subordinate facts in evidence.9 As noted, ‘‘there must
    be subordinate facts from which the conclusion that
    there is a causal connection between the employment
    and the injury can be drawn.’’ (Internal quotation marks
    omitted.) DiNuzzo v. Dan Perkins Chevrolet Geo, 
    Inc., supra
    , 
    294 Conn. 143
    . The defendant contends that there
    is no evidence to support Gotay’s opinion that the
    impact on the plaintiff’s head was severe enough to
    cause a labyrinthine concussion. It also contends that
    Gotay’s opinion was not supported by subordinate facts
    because he was unable to justify or explain his belief
    that head trauma is not necessary to cause a labyrin-
    thine concussion. We disagree.
    At his deposition, Gotay maintained that a labyrin-
    thine concussion does not require a head injury.10 He
    testified that ‘‘any shaking of the head or trauma to the
    head [that] makes that labyrinth move the fluid inside
    in a certain way . . . can damage either the hearing
    part of it or the vestibular system, which is the balance
    part of it. And if the vestibular system gets damaged,
    then the patient will present with balance issues like
    dizziness. If the cochlea or the hearing part gets dam-
    aged, and it’s all connected, the patient will present
    with hearing loss and with tinnitus, or noise in the
    ear.’’ Gotay concluded that ‘‘that’s why, with reasonable
    medical probability, I made my statement about the
    relation between the accident and [the plaintiff’s] three
    complaints [of dizziness, hearing loss, and tinnitus].’’
    We disagree with the defendant that Gotay’s opinion
    lacks sufficient factual support because of his alleged
    failure to ‘‘justify’’ his opinion that the shaking and
    spinning experienced by the plaintiff caused a labyrin-
    thine concussion in the absence of a direct blow to the
    head. ‘‘[T]he facts on which an expert relies for his
    medical opinion is relevant to determining the admissi-
    bility of the expert opinion, but once determined to be
    admissible, there is no rule establishing what precise
    facts must be included to support an expert opinion.’’
    Marandino v. Prometheus 
    Pharmacy, supra
    , 
    294 Conn. 594
    .
    The defendant did not challenge the admissibility of
    Gotay’s expert testimony. Furthermore, when deposing
    Gotay, the defendant was able to, and did, challenge
    his credibility and the weight to be given to his opinion
    by presenting its own experts’ opposing conclusions
    regarding the issue of causation. Once Gotay’s report
    and testimony were admitted into evidence, the com-
    missioner was entitled to determine the weight to give
    that evidence. See 
    id. Moreover, ‘‘it
    is proper to consider medical evidence
    along with all other evidence to determine whether
    an injury is related to the employment.’’ (Emphasis in
    original.) 
    Id., 595; see
    also DiNuzzo v. Dan Perkins
    Chevrolet Geo, 
    Inc., supra
    , 
    294 Conn. 142
    (if ‘‘medical
    testimony by itself . . . or . . . considered along with
    other evidence’’ establishes causation, commissioner
    may reasonably conclude that plaintiff’s condition is
    causally related to his employment [internal quotation
    marks omitted]).
    The plaintiff’s account of the accident included a
    description of severe spinning and shaking of his head
    and neck that closely resembles Gotay’s description of
    the type of force that causes a labyrinthine concussion.
    Specifically, the plaintiff testified that when he was
    struck by the car, his head and neck were ‘‘violently
    twisted side to side as I spun around and around. . . .
    It was like one of those bobblehead things you put on
    your windshield . . . .’’ He also testified that ‘‘I’ve seen
    a lot of . . . rear-end accidents where people get hit
    and get whiplash from back and forth motions. I know I
    got the same thing from side to side.’’ The commissioner
    found the plaintiff’s testimony ‘‘fully credible and per-
    suasive.’’ Thus, considering the plaintiff’s testimony
    along with Gotay’s expert opinion, the commissioner
    reasonably concluded that the plaintiff’s hearing loss
    resulted from a labyrinthine concussion caused by
    the accident.
    The defendant also challenges the sufficiency of the
    factual support for Gotay’s opinion on the ground that
    Gotay was required to ‘‘quantify or conclusively
    describe the amount of force or shaking that is neces-
    sary to cause a labyrinthine concussion without head
    trauma’’ in order to provide a sufficient factual basis
    for his opinion. We disagree. ‘‘[S]uch an exacting stan-
    dard of proof, as urged by the [defendant], is not
    required. . . . Rather, the commissioner need only be
    convinced that it was reasonably probable that [a causal
    connection existed between the plaintiff’s employment
    and his condition].’’ (Citation omitted; internal quota-
    tion marks omitted.) Estate of Haburey v. Winchester,
    
    150 Conn. App. 699
    , 716, 
    92 A.3d 265
    , cert. denied, 
    312 Conn. 922
    , 
    94 A.3d 1201
    (2014); see also Marandino v.
    Prometheus 
    Pharmacy, supra
    , 
    294 Conn. 594
    –95 (com-
    missioner properly determined that it was reasonably
    probable that plaintiff’s injury was causally related to
    her employment).
    At Gotay’s deposition, the defendant’s counsel ques-
    tioned him extensively as to what force would be suffi-
    cient to cause the fluid in the labyrinth to move in a
    way that would cause the plaintiff’s symptoms. Gotay
    responded that spinning, shaking, or other movement
    ‘‘that could move the fluids inside the ear vigorously
    enough to affect the different organs that are hiding’’
    would be sufficient. He characterized such force as
    ‘‘significant.’’ The commissioner was entitled to deter-
    mine that Gotay’s responses were credible and to con-
    clude from them, in conjunction with all the other
    evidence, that the force of the accident was sufficient
    to cause a labyrinthine concussion.
    Finally, the defendant points to the following evi-
    dence in the record to cast doubt on the factual basis
    for the commissioner’s conclusion: witnesses to the
    accident described the plaintiff as having been merely
    ‘‘bumped’’ or ‘‘brushed’’ by the car; Kveton testified
    that the type of whiplash injury sufficient to cause a
    labyrinthine concussion would knock an individual off
    his feet; and there are no contemporaneous complaints
    by the plaintiff of dizziness, tinnitus, or hearing loss
    to corroborate the history he provided to Gotay. We
    disagree with the defendant that any of this evidence
    demonstrates a lack of subordinate facts to support the
    commissioner’s conclusion.
    As we repeatedly have noted, the commissioner
    found the plaintiff’s testimony to be ‘‘fully credible and
    persuasive.’’ In addition to testifying that his head and
    neck had ‘‘violently twisted side to side’’ in the accident,
    the plaintiff testified that he had been experiencing
    hearing problems, ringing in his ears, and dizziness
    since that time. Consequently, when presented with
    differing versions of the accident or the question of
    whether the plaintiff experienced dizziness and hearing
    loss immediately afterward, the commissioner was well
    within his authority to choose which evidence he found
    persuasive and which evidence he found unpersuasive,
    and adjudicate the claim accordingly. ‘‘As the fact
    finder, the commissioner may reject or accept evidence
    . . . . It is not the province of this court to second-
    guess the commissioner’s factual determinations. . . .
    This court, like the board, is precluded from substituting
    its judgment for that of the commissioner with respect
    to factual determinations.’’ (Citations omitted; internal
    quotation marks omitted.) Estate of Haburey v. Win-
    
    chester, supra
    , 
    150 Conn. App. 717
    .
    After reviewing the record, we conclude that Gotay’s
    opinion was neither the product of speculation and
    conjecture nor insufficiently supported by facts in the
    record. Accordingly, the board properly concluded that
    the commissioner’s finding that the plaintiff’s hearing
    loss arose out of his work related injury was not legally
    incorrect, unsupported by the evidence, or the product
    of unreasonable inferences.
    II
    The defendant also claims that the commissioner
    should have relied on Lehmann and Kveton’s expert
    opinions instead of on Gotay’s expert opinion. We
    disagree.
    ‘‘Our role is to determine whether the [board’s] deci-
    sion results from an incorrect application of the law to
    the subordinate facts or from an inference illegally or
    unreasonably drawn from them. . . . This standard
    clearly applies to conflicting expert medical testimony.
    It [is] the province of the commissioner to accept the
    evidence which impress[es] him as being credible and
    the more weighty.’’ (Internal quotation marks omitted.)
    Hummel v. Marten Transport, Ltd., 
    114 Conn. App. 822
    , 844, 
    970 A.2d 834
    , cert. denied, 
    293 Conn. 907
    , 
    978 A.2d 1109
    (2009).
    In this case, the parties’ experts offered opposing
    opinions as to whether the plaintiff’s accident caused
    his hearing loss. We already have determined that the
    commissioner’s conclusion regarding causation, which
    he reached after considering this conflicting expert tes-
    timony and other evidence in the record, was neither
    legally incorrect nor the product of unreasonable infer-
    ences. The commissioner was entitled to determine that
    Gotay’s opinion was the more credible and persuasive
    expert opinion.
    The decision of the Workers’ Compensation Review
    Board is affirmed.
    In this opinion the other judges concurred.
    1
    PMA Management Corporation of New England, the town of Woodbury’s
    workers’ compensation insurance carrier, is also a defendant and a party
    to this appeal. For convenience, we refer to the town of Woodbury as
    the defendant.
    2
    In voluntary agreements, the parties stipulated that the plaintiff suffered
    various injuries as a result of the accident.
    3
    Vertigo syndrome is defined as ‘‘[a] sensation of spinning or whirling
    motion.’’ Stedman’s Medical Dictionary (27th Ed. 2000) p. 1958.
    4
    ‘‘Tinnitus is defined as [p]erception of a sound in the absence of an
    environmental acoustic stimulus. The sound can be a pure tone or noise
    including (ringing, whistling, hissing, roaring, or booming) in the ears.’’
    (Internal quotation marks omitted.) Jones v. Connecticut Children’s Medical
    Center Faculty Practice Plan, 
    131 Conn. App. 415
    , 418 n.3, 
    28 A.3d 347
    (2011).
    5
    Electronystagmography is defined as ‘‘[a] method of nystagmography
    . . . [in which] skin electrodes are placed at outer canthi to register hori-
    zontal nystagmus or above and below each eye for vertical nystagmus.’’
    Stedman’s Medical Dictionary (27th Ed. 2000) p. 576. Nystagmus is defined as
    ‘‘[i]nvoluntary rhythmic oscillation of the eyeballs . . . .’’ Stedman’s Medical
    Dictionary, supra, p. 1246. Gotay testified that an electronystagmogram is
    ‘‘a balance test.’’
    6
    The labyrinth is defined as ‘‘[t]he internal or inner ear, composed of the
    semicircular ducts, vestibule, and cochlea.’’ Stedman’s Medical Dictionary
    (27th Ed. 2000) p. 957. Gotay testified that ‘‘a concussion of the labyrinth
    is something that actually shakes it to a point where the patient presents
    . . . with . . . hearing loss, tinnitus, or dizziness.’’
    7
    Although Lehmann was neither deposed nor his report entered into
    evidence, Gotay was presented with and refuted Lehmann’s conclusion in
    his deposition testimony. Gotay’s deposition testimony was admitted into
    evidence. See footnote 8 of this opinion. Therefore, Lehmann’s conclusion
    was before the commissioner.
    8
    For example, the following exchange occurred between the defendant’s
    counsel and Gotay at his deposition:
    ‘‘Q. Earlier I read to you the report of Doctor Lehmann in which Doctor
    Lehmann states that he estimated that the bilateral high-pitched humming,
    tinnitus began approximately six months post motor vehicle accident.
    ‘‘A. That’s his statement, yes.
    ‘‘Q. Yes. And I had asked whether that was consistent with your under-
    standing of [the plaintiff’s] history.
    ‘‘A. I cannot say yes to that, because the facts I have [say] ringing in the
    ears, lightheadedness, and hearing loss since the accident.
    ‘‘Q. Okay.
    ‘‘A. October [2002]. So, it doesn’t—I don’t have here six months after, one
    month, one day. This says since the accident. That’s what I have on my—
    and that’s what I have to—those are the facts (indicating).
    ‘‘Q. Yes, I understand that.
    ‘‘A. Okay?
    ‘‘Q. Would that timing make a difference with respect to your addressing
    the issue of causation?
    ‘‘A. No. I’ll tell you why.
    ‘‘Q. Okay.
    ‘‘A. Very simple. You can get hit in the head today and you can get dizzy
    a year from now, ten years from now and it could be from that. Okay? So,
    you don’t have to be dizzy the day of the injury. You could be dizzy weeks,
    months, years after. And it all could be from that accident.
    ‘‘Q. Okay. So, how is a medical provider, is it that you can opine as to
    the event when you get six months, a year, two years out?
    ‘‘A. You do testing, like I did, and then you, based on experience you
    come to conclusions.
    ‘‘Q. Okay.
    ‘‘A. And based on your training.’’
    9
    The defendant characterizes the Supreme Court’s decision in DiNuzzo
    as establishing a two-pronged ‘‘threshold standard for expert medical evi-
    dence’’—namely, ‘‘(1) expert opinions must be based on reasonable probabil-
    ities rather than mere speculation or conjecture and (2) expert opinions
    must be supported by subordinate facts.’’ In accord with this reading of
    DiNuzzo, the defendant argues that the board, in affirming the commission-
    er’s decision, failed to apply the second prong of the standard. We disagree
    with the defendant’s characterization of DiNuzzo.
    It is true that, to be admissible, an ‘‘[e]xpert [opinion] must be based [on]
    reasonable probabilities . . . .’’ (Internal quotation marks omitted.)
    DiNuzzo v. Dan Perkins Chevrolet Geo, 
    Inc., supra
    , 
    294 Conn. 142
    . Neverthe-
    less, we read the requirement of sufficient subordinate factual support—
    the so-called second prong—to apply to the commissioner’s conclusion that
    a causal connection exists between the injury and the claimant’s employ-
    ment, not to the admissibility of the expert opinion on which the commis-
    sioner relies in reaching that conclusion. See 
    id., 143 (‘‘the
    finding of the
    commissioner cannot be sustained unless supported by the subordinate
    facts’’ [internal quotation marks omitted]). In any case, both of the defen-
    dant’s interrelated arguments—that Gotay’s opinion was based on specula-
    tion or conjecture and that it was not supported by subordinate facts—are
    relevant to our determination of the issue on appeal—whether there was
    sufficient factual support in the record for the commissioner’s conclusion
    regarding causation. As a result, we consider both arguments.
    10
    Specifically, Gotay explained: ‘‘You know, naturally if the patient falls,
    hits the head on the ground, then there’s not reasonable medical probability.
    You have a certainty. . . . But when there has not been an actual fall or a
    patient has been struck on the head, it’s just either spinning or shaking, or
    anything that could move the fluids inside the ear vigorously enough to
    affect the different organs that are hiding, or being inside this labyrinth,
    that would be enough.’’