Table 1.
Odds Ratios for number of night-shifts worked 7 and 28 days prior to the day of workplace violence (WPV) episodes
| Number of night-shifts in previous 7 days (lenght ≥4 hours) | WPV cases N. 186 (%) | Controls N. 186 (%) | O.R. (95% Cl) | P-value |
| 0 | 7 (3,88) | 12 (8,74) | 1* | |
| 1-2 | 88 (49,52) | 123 (66,02) | 1,23 (0,46-3,24) | >0,05 |
| 3-6 | 91 (46,60) | 51 (25,24) | 3,06(1,13- 8,26) | <0,05 |
| Number of night-shifts in previous 28 days (lenght ≥4 hours) | NSSI cases N. 186 (%) | Controls N. 186 (%) | O.R. (95% Cl) | P-value |
| <4 | 49 (26,21) | 64 (33,98) | 1* | |
| 4-8 | 49 (28,16) | 73 (39,81) | 0,88 (0,52-1,47) | >0,05 |
| >8 | 88 (45,63) | 49 (26,21) | 2,35 (1,41-3,91) | <0,05 |
CI, confidence interval. *Referent category