Table 4.
Distribution of students' tinnitus status according to exposure to different risk factors, continued.
| Risk factors, continued | Tinnitus | P | ||||
|---|---|---|---|---|---|---|
| Negative | Positive | |||||
| No. | % | No. | % | |||
| How often did you ride/operate motorized vehicles such as motorcycles, jet skis, speed boats, snowmobiles, or four wheelers? | Never | 222 | 74.2 | 77 | 25.8 | 0.048∗ |
| Every few months | 42 | 67.7 | 20 | 32.3 | ||
| Monthly | 9 | 47.4 | 10 | 52.6 | ||
| Weekly | 5 | 50.0 | 5 | 50.0 | ||
| Daily | 8 | 80.0 | 2 | 20.0 | ||
| If you rode motorized vehicles, on average, how many hours did each time/session last? | Never | 204 | 73.6 | 73 | 26.4 | 0.513 |
| Every few months | 6 | 60.0 | 4 | 40.0 | ||
| Monthly | 36 | 67.9 | 17 | 32.1 | ||
| Weekly | 40 | 66.7 | 20 | 33.3 | ||
| How often do you play a musical instrument? | Never | 225 | 73.3 | 82 | 26.7 | 0.001∗ |
| Every few months | 35 | 53.8 | 30 | 46.2 | ||
| Monthly | 15 | 100.0 | 0 | 0.0 | ||
| Weekly | 9 | 90.0 | 1 | 10.0 | ||
| Daily | 2 | 66.7 | 1 | 33.3 | ||
| How often do you listen to music, radio programs, etc. using personal headsets or earphones? | Never | 42 | 77.8 | 12 | 22.2 | 0.241 |
| Every few months | 10 | 55.6 | 8 | 44.4 | ||
| Monthly | 16 | 61.5 | 10 | 38.5 | ||
| Weekly | 44 | 77.2 | 13 | 22.8 | ||
| Daily | 174 | 71.0 | 71 | 29.0 | ||
| If you listened through earphones, on average, how many hours did each time/session last?) | 8 hours or more | 53 | 60.2 | 35 | 39.8 | 0.035∗ |
| 4 hours to 8 hours | 41 | 62.1 | 25 | 37.9 | ||
| 1 hour up to 4 hours | 121 | 72.9 | 45 | 27.1 | ||
| Less than 1 hour | 32 | 84.2 | 6 | 15.8 | ||
| Working at noisy area during summer period | Yes | 16 | 84.2 | 3 | 15.8 | 0.209 |
| No | 270 | 70.9 | 111 | 29.1 | ||
P: X2 for linear trend. ∗P < 0.05 (significant).