From: Burden of neck pain among medical students in Ethiopia
Variables | Frequency (N) | Percent (%) |
---|---|---|
Physical exercise | ||
 Yes | 147 | 35.1% |
 No | 272 | 64.9% |
Cigarette smoking | ||
 Yes | 14 | 3.3% |
 No | 405 | 96.7% |
Alcohol drinking | ||
 Yes | 117 | 27.9% |
 No | 302 | 72.1% |
Self-perceived stress | ||
 Low stress | 56 | 13.4% |
 Moderate stress | 342 | 81.6% |
 High stress | 21 | 5.0% |
Sleeping hours | ||
  ≤ 6 h | 127 | 30.3% |
 7–8 h | 240 | 57.3% |
  ≥ 9 h | 52 | 12.4% |