Table 1 General characteristics of subjects
Variable | N (Mean \( \pm \) SD or %) |
|---|---|
Age (years) | 15 (23.87 \( \pm \) 1.68) |
Male | 10 (66.67%) |
Smoking | |
Non smoker | 13 (86.87%) |
Current smoker | 2 (13.33%) |
Coffee consumption | |
No | 7 (46.67%) |
Once a day | 5 (33.33%) |
Twice a day | 3 (20%) |
Drinking alcohol | |
No | 4 (26.67%) |
Once or twice a week | 3 (20%) |
Once or twice a month | 8 (53.33%) |
Current medication | 0 (0%) |
Hearing impairment | 0 (0%) |
Noise sensitivity | |
Low | 3 (20%) |
Middle | 8 (53.33%) |
High | 4 (26.67%) |