Skip to main content
. Author manuscript; available in PMC: 2023 Mar 1.
Published in final edited form as: Ear Hear. 2021 Sep 15;43(2):582–591. doi: 10.1097/AUD.0000000000001126

Table 5.

Longitudinal Changes in Hearing Thresholds over Time

Total number of audiograms First Visit Mean (SD) Last Visit Mean (SD) Mean Change in Hearing Threshold (dB) per Year (95% CI) P-value
Age - 3.7 (3.4) 14.1 (10.5) -
4F-PTA 186 67.0 (16.0) 74.0 (18.5) 1.0 (0.4, 1.5) 0.001
Frequency
0.5 kHz 191 63.5 (18.6) 64.8 (18.5) 0.3 (0.0, 0.6) 0.09
1.0 kHz 186 64.1 (18.9) 71.0 (18.7) 0.6 (0.4, 0.7) <0.001
2.0 kHz 190 67.7 (17.1) 76.6 (18.8) 1.0 (0.5, 1.4) <0.001
4.0 kHz 190 73.2 (14.8) 82.9 (21.7) 1.4 (0.7, 2.0) <0.001
8.0 kHz 188 85.0 (16.4) 95.3 (13.5) 0.4 (0.0, 0.7) 0.03

A linear mixed effects regression model was used to examine longitudinal changes in frequency-specific thresholds and 4F-PTA (both in dB HL) over time in 54 ears from 27 patients.