Nursing shifts | n | Minutes into shift Median (IQR Q1–Q3) | P value |
Shift on day of CI | 0.11* | ||
Early/late | 168 | 300 (180–430) | |
Night | 76 | 204.5 (117.5–450) | |
No of early/late shifts in past 4 days | 0.10† | ||
0 | 33 | 210 (130–470) | |
1 | 71 | 240 (163.5–390) | |
2 | 78 | 285 (150–412.5) | |
3 | 42 | 325 (240–465) | |
4 | 20 | 369 (286.25–442.5) | |
No of Night shifts in past 4 days | 0.15† | ||
0 | 147 | 300 (190–432.5) | |
1 | 48 | 235 (137.5–386.25) | |
2 | 25 | 209 (90–300) | |
3 | 15 | 240 (137.5–497.5) | |
4 | 9 | 240 (159–485) | |
No of days off in past 4 days | 0.56† | ||
0 | 59 | 300 (190–445) | |
1 | 65 | 300 (150–450) | |
2 | 90 | 281.5 (152.5–420) | |
3 | 30 | 212.5 (161.25–417.5) |
*Mann-Whitney U test;
†Kruskal-Wallis test.
CI, clinical incident.;