PMID- 37889169
OWN - NLM
STAT- MEDLINE
DCOM- 20231205
LR  - 20231205
IS  - 1558-9137 (Electronic)
IS  - 1059-0889 (Linking)
VI  - 32
IP  - 4
DP  - 2023 Dec 4
TI  - Development and Application of a Reference-Interval Approach to Tympanometric 
      Norms Using U.S. Population Data for Ages 6-80+ Years.
PG  - 908-929
LID - 10.1044/2023_AJA-23-00092 [doi]
AB  - PURPOSE: United States national data for tympanometric measures from 16,614 ears 
      included in the National Health and Nutrition Examination Survey for 2015-2016 
      and 2017-2020 were analyzed and described. METHOD: Analyses were primarily 
      descriptive and relied on distribution-free medians and cumulative distribution 
      functions (CDFs). Differences between CDFs were examined using Cohen's h effect 
      size. Results are presented for the age range 6-80+ years. A reference interval 
      (RI) approach was pursued in which the interval from the 2.5th to the 95th 
      percentile for healthy ears was specified for peak-compensated static admittance 
      (Y(tm)+), tympanometric peak pressure, tympanometric width, and equivalent 
      acoustic ear-canal volume (V(ea)+). RESULTS: Separate RIs were required for 6- to 
      13-year-olds compared to those 14-80+ years of age for all four tympanometric 
      measures. For both age groups, a separate RI was warranted for each sex for 
      Y(tm)+ and V(ea)+. For those 14-80+ years of age, a separate RI was also needed 
      for non-Hispanic Asians for Y(tm)+. When these RIs were applied to the full data 
      set, about 5%-10% of ears were found to be either below the lower limit or above 
      the upper limit of the RI. Those ears outside the RI limits had about 5 dB higher 
      low-frequency hearing thresholds than those within RI limits. Both Y(tm)+ and 
      V(ea)+ were found to depend on body size. CONCLUSION: RIs for tympanometric 
      measures from individuals with healthy ears were established, and when applied to 
      the general U.S. population 6-80+ years of age, 5%-10% of ears fell outside the 
      RIs depending on the measure.
FAU - Humes, Larry
AU  - Humes L
AUID- ORCID: 0000-0002-9668-3744
AD  - Department of Speech, Language and Hearing Sciences, Indiana University, 
      Bloomington.
LA  - eng
PT  - Journal Article
DEP - 20231027
PL  - United States
TA  - Am J Audiol
JT  - American journal of audiology
JID - 9114917
SB  - IM
MH  - Humans
MH  - United States
MH  - Child
MH  - Adolescent
MH  - Young Adult
MH  - Adult
MH  - Middle Aged
MH  - Aged
MH  - Aged, 80 and over
MH  - Nutrition Surveys
MH  - *Acoustic Impedance Tests/methods
MH  - *Hearing
MH  - Reference Values
MH  - Acoustics
EDAT- 2023/10/27 12:43
MHDA- 2023/12/05 12:42
CRDT- 2023/10/27 10:03
PHST- 2023/12/05 12:42 [medline]
PHST- 2023/10/27 12:43 [pubmed]
PHST- 2023/10/27 10:03 [entrez]
AID - 10.1044/2023_AJA-23-00092 [doi]
PST - ppublish
SO  - Am J Audiol. 2023 Dec 4;32(4):908-929. doi: 10.1044/2023_AJA-23-00092. Epub 2023 
      Oct 27.