TABLE 3

Mean Tympanometric Peak Pressure Values in Relation to Study Group, Age in Months, and Absence or Presence of MEE

Month of LifeGroup 1 Middle-Ear StatusGroup 2 Middle-Ear Status
No MEEMEEPaNo MEEMEEPa
No. of EarsMean Pressure ± SD, daPaNo. of EarsMean Pressure ± SD, daPaNo. of EarsMean Pressure ± SD, daPaNo. of EarsMean Pressure ± SD, daPa
1–326−8.3 ± 34.3143.9 ± 31.5.29427−6.4 ± 38.953−10.9 ± 21.7.97
4–696−21.3 ± 55.516−51.6 ± 92.2.101206−11.5 ± 59.8155−40.0 ± 66.2<.001
7–979−21.2 ± 71.113−91.5 ± 69.5.421324−18.6 ± 69.3224−64.1 ± 75.7<.001
10–1239−43.5 ± 74.89−102.2 ± 54.5.06750−25.1 ± 82.3116−80.1 ± 82.5<.001
13–1831−51.9 ± 96.614−152.1 ± 109.2.01957−19.2 ± 83.5103−93.4 ± 91.2<.001
19–2429−38.8 ± 82.49−90.0 ± 107.1.43745−27.3 ± 79.638−114.5 ± 95.1.002
25–3617−15.0 ± 71.45−69.0 ± 96.2.27488−32.3 ± 84.816−137.8 ± 113.6.12
Total317−27.2 ± 69.680−77.1 ± 94.0<.001b5897−19.4 ± 73.2705−66.1 ± 81.5<.001b
  • In group 1, all of the joint tympanometric and otoscopic assessments were conducted independently of each other; in group 2, not all of the assessments were independent. Tympanograms for 24 ears in group 1 and 252 ears in group 2 were flat, so that for each of these the tympanometer recorded “NP” (“no peak”). To these ears we assigned no value for peak pressure.

  • a No MEE versus MEE.

  • b After adjustment for age in months.