TABLE 1.
Distribution of predictors among the nurses (N = 2,798) included in the study sample
| Variable | N (%) or mean (SD) |
|---|---|
| Sex, N = 2,796 (%) | |
| Female | 2,522 (90.2) |
| Male | 274 (9.8) |
| Age (years), N = 2,790, mean (SD) | 31.9 (8.4) |
| Marital status, N = 2,771 (%) | |
| Partner | 1904 (68.7) |
| Single | 867 (31.3) |
| Children living at home, N = 2,669 (%) | |
| Yes | 1,096 (41.1) |
| No | 1573 (58.9) |
| Work experience (years), N = 2,764, mean (SD) | 3.7 (4.3) |
| Hours worked per week, N = 2,745, mean (SD) | 33.7 (7.1) |
| Type of workplace, N = 2,631 (%) | |
| Acute care | 2,204 (83.8) |
| Community‐based care | 427 (16.3) |
| Shift work schedule, N = 2,759 (%) | |
| Schedule without night work | 988 (35.8) |
| Schedule with night work | 1771 (64.2) |
| Number of night shifts, N = 2,755 (%) | |
| 0 | 693 (25.2) |
| 1–20 | 936 (34.0) |
| 21–40 | 617 (22.4) |
| 41–60 | 255 (9.3) |
| >60 | 254 (9.2) |
| Number of quick returns, N = 2,660 (%) | |
| 0 | 311 (11.7) |
| 1–20 | 890 (33.5) |
| 21–40 | 572 (21.5) |
| 41–60 | 545 (20.5) |
| >60 | 342 (12.9) |
| Sleep duration, N = 2,780, mean (SD) | |
| <6 hr | 167 (6.0) |
| 6‐<7 hr | 797 (28.7) |
| 7‐<8 hr | 1,185 (42.6) |
| 8–9 hr | 606 (21.8) |
| >9 hr | 25 (0.9) |
| Excessive daytime sleepiness, N = 2,789 (%) | |
| No (ESS score <11) | 2028 (72.7) |
| Yes (ESS score ≥11) | 761 (27.3) |
| Shift work disorder (SWD), N = 2,782 (%) | |
| No | 1817 (65.3) |
| Yes | 965 (34.7) |
| Insomnia, N = 2,794 (%) | |
| No | 1,342 (48.0) |
| Yes | 1,452 (52.0) |
| Anxiety, N = 2,785 (%) | |
| No (HADS‐A score <8) | 2,223 (79.8) |
| Yes (HADS‐A score ≥8) | 562 (20.2) |
| Depression, N = 2,785 (%) | |
| No (HADS‐D score <8) | 2,541 (91.2) |
| Yes (HADS‐D score ≥8) | 244 (8.8) |