Table 3

Time of CI from shift commencement and shift pattern analysis

Nursing shiftsnMinutes into shift
Median (IQR Q1–Q3)
P value
Shift on day of CI0.11*
 Early/late168300 (180–430)
 Night76204.5 (117.5–450)
No of early/late shifts in past 4 days0.10†
 033210 (130–470)
 171240 (163.5–390)
 278285 (150–412.5)
 342325 (240–465)
 420369 (286.25–442.5)
No of Night shifts in past 4 days0.15†
 0147300 (190–432.5)
 148235 (137.5–386.25)
 225209 (90–300)
 315240 (137.5–497.5)
 49240 (159–485)
No of days off in past 4 days0.56†
 059300 (190–445)
 165300 (150–450)
 290281.5 (152.5–420)
 330212.5 (161.25–417.5)
  • *Mann-Whitney U test;

  • †Kruskal-Wallis test.

  • CI, clinical incident.;