Table 2: Comparison of Hearing threshold levels for air conduction in the better ear for diabetic subjects and non-diabetic control subjects (N = 140).
| Audiometric Measurements Frequency ( KHz) (Low frequencies) | Diabetic (mean) dB | Control (mean) dB | P value | Diabetic Log dB | Control Log dB | P value |
| 0.25 KHz | 22.3 ± 10.7 | 21.5 ± 9.4 | 0.2 | 1.341 ± 0.03 | 1.33 ± 0.04 | 0.03 |
| 0.5 KHz | 28.5 ± 13.4 | 23.1 ± 14.2 | 0.002 | 1.451 ± 0.04 | 1.354 ± 0.03 | 0.002 |
| 1 KHz | 32.0 ± 11.9 | 22.4 ± 9.5 | 0.00 | 1.504 ± 0.06 | 1.362 ± 0.04 | 0.000 |
| High frequencies | ||||||
| 2 KHz | 33.5 ± 12.4 | 23.2 ± 10 | 0.00 | 1.5005 ± 0.14 | 1.3624 ± 0.04 | 0.000 |
| 4 KHz | 42.1 ± 15.5 | 24.4 ± 11.4 | 0.00 | 1.6052 ± 0.14 | 1.385 ± 0.04 | 0.00 |
| 6 KHz | 51.7 ± 17.2 | 20.7 ± 9.8 | 0.00 | 1.7098 ± 0.06 | 1.319 ± 0.03 | 0.00 |
| 8 KHz | 49.3 ± 16.3 | 24.3 ± 14.1 | 0.00 | 1.6887 ± 0.06 | 1.384 ± 0.04 | 0.00 |