Table 3

Outputs of multilevel models: associations between the model predictors, and burnout, job dissatisfaction, dissatisfaction with work schedule flexibility and intention to leave

	Unadjusted		Fully adjusted*
Shift length category	OR	95% CI	aOR	95% CI
Burnout
Emotional exhaustion (>27)
8.1–10	1.14†	1.07 to 1.21	1.12†	1.03 to 1.22
10.1–11.9	1.18†	1.01 to 1.38	1.34†	1.12 to 1.61
≥12	1.26†	1.11 to 1.44	1.26†	1.09 to 1.46
Depersonalisation (>13)
8.1–10	1.13†	1.03 to 1.23	0.96	0.85 to 1.08
10.1–11.9	1.30†	1.06 to 1.59	1.14	0.90 to 1.44
≥12	1.46†	1.23 to 1.73	1.21†	1.01 to 1.47
Personal accomplishment (<31)
8.1–10	1.12†	1.04 to 1.21	0.98	0.88 to 1.08
10.1–11.9	1.44†	1.21 to 1.71	1.32†	1.09 to 1.61
≥12	1.51†	1.32 to 1.73	1.39†	1.20 to 1.62
Job dissatisfaction
8.1–10	1.30†	1.22 to 1.39	1.15†	1.05 to 1.25
10.1–11.9	1.40†	1.19 to 1.63	1.31†	1.09 to 1.57
≥12	1.59†	1.39 to 1.82	1.40†	1.20 to 1.62
Dissatisfaction with work schedule flexibility
8.1–10	1.13†	1.06 to 1.21	1.04	0.95 to 1.13
10.1–11.9	1.07	0.90 to 1.26	1.03	0.85 to 1.25
≥12	1.27†	1.10 to 1.46	1.15†	1.00 to 1.35
Intention to leave job within next year
8.1–10	1.19†	1.12 to 1.27	1.07	0.99 to 1.16
10.1–11.9	1.33†	1.15 to 1.53	1.18†	1.00 to 1.41
≥12	1.51†	1.33 to 1.71	1.29†	1.12 to 1.48

The reference group is the shift category of 8–9 h. ORs and CIs are derived from generalised linear mixed models that accounted for nesting of observations within countries, hospitals and units.
*Fully adjusted models account for nurse age, gender, full-time/part-time status, shift type (day/night), overtime (yes/no), type of unit, nurse staffing, hospital size and hospital teaching and technology status.
†If both sides of the 95% CI of the OR are greater than 1, or both sides are less than 1, the result is considered significant.