02018nas a2200169   4500008004100000022001400041245012700055210006900182260001200251520141700263100002301680700002601703700002801729700001901757700002401776856004801800       2013                        eng d  a1558-913700aReliability of broadband middle-ear power-reflectance in younger and older adults: Application of Generalizability Theory.0 aReliability of broadband middleear powerreflectance in younger a  c07/20133 aPURPOSE:
To assess the reliability of broadband middle-ear power reflectance (BMEPR) and transmittance profiles for chirp and tonal stimuli using generalizability theory (GT).
METHOD:
In adults without a history of middle-ear disease, the authors assessed the reliability of BMEPR to chirp and tonal stimuli using a multivariate approach based on an analysis of variance model (GT). For comparisons with other published studies, Pearson's product-moment correlation coefficients (Pearson's r) also were used.
RESULTS:
Based on GT with chirp stimuli, overall BMEPR measures had good reliability; however, the reliability of individual profiles across frequencies and ears was less than optimal. Lower generalizability coefficients were found when transmittance was evaluated. Test-retest reliability using Pearson's r was better for right versus left ears, and mid-frequencies were generally more reliable than those at either extreme of the frequency range. In contrast, tonal stimuli had higher generalizability coefficients and Pearson's r values than chirps for all frequencies tested; Pearson's r values were also higher for right versus left ears.
CONCLUSION:
The authors extended the use of GT as a preferred way to evaluate reliability of BMEPR and transmittance profiles for chirps and tones because it allows for a more comprehensive evaluation compared with unidimensional pairwise correlations.1 aMahoney, Marty, J.1 aMcFarland, Dennis, J.1 aCarpenter, Michelle, S.1 aRizvi, Sabahet1 aCacace, Anthony, T.  uhttp://www.ncbi.nlm.nih.gov/pubmed/23824437