Table 1.
Demographic characteristics of study subjects.
| Variables | Sensitive group (n = 117) | Resistant group (n = 117) | P | ||
|---|---|---|---|---|---|
| n | % | n | % | ||
| Age (years) | |||||
| Mean ± SD | 40.72 ± 6.60 | 41.87 ± 4.56 | 0.121a | ||
| Sex | |||||
| Male | 112 | 95.7 | 109 | 93.2 | 0.392b |
| Female | 5 | 4.3 | 8 | 6.8 | |
| Tobacco use | |||||
| Now | 59 | 50.4 | 61 | 52.1 | 0.249b |
| Ever | 3 | 2.6 | 8 | 6.8 | |
| Never | 55 | 47.0 | 48 | 41.0 | |
| Alcohol consumption | |||||
| Now | 40 | 34.2 | 51 | 43.6 | 0.374c |
| Ever | 3 | 2.6 | 3 | 2.6 | |
| Never | 74 | 63.2 | 2.6 | 53.8 | |
| Work time with noise (years) | |||||
| Mean ± SD | 19.18 ± 7.67 | 18.79 ± 6.94 | 0.288a | ||
| Expose level with noise (dB) | |||||
| Mean ± SD | 87.01 ± 8.11 | 87.01 ± 6.37 | 1.000a | ||
| Hearing threshold level (dB) | |||||
| Mean ± SD | 52.35 ± 6.63 | 8.98 ± 2.27 | <0.001 a | ||
| <26 | 0 | 0 | 117 | 100.0 | |
| ≥26 | 117 | 100 | 0 | 0.0 | |
aStudents' t-test; bTwo-sided χ2 test; cFisher's exact test.