From: Gastrointestinal complaints in shift-working and day-working nurses in Iran
Age Groups | Â | Morning only | Shift working | Total |
---|---|---|---|---|
20-29 | positive | 1 | 38 | 39 |
 | negative | 2 | 2 | 10 |
30-39 | positive | 13 | 58 | 71 |
 | negative | 8 | 8 | 16 |
40-49 | positive | 1 | 13 | 14 |
 | negative | 1 | 8 | 9 |
50< | positive | 1 | 0 | 1 |
 | negative | 0 | 0 | 0 |