Differences in sickness absence between self-employed and employed doctors: a cross-sectional study on national sample of Norwegian doctors in 2010

Table 3 Logistic regression models on sickness absence days during the last 12 months as response variable among Norwegian doctors in 2010 (method: enter)

	Multivariate analysis
	Model 1			Model 2			Model 3			Model 4
	≥1 sick days (n = 236)			1-3 sick days (n = 100)			4-99 sick days (n = 122)			100 or more sick days (n = 14)
	(vs. none sick days, n = 532)			(vs. none sick days, n = 532)			(vs. none sick days, n = 532)			(vs. none sick days, n = 532)
	OR	95% CI	P	OR	95% CI	P	OR	95% CI	P	OR	95% CI	P
Age	1.01	0.99-1.02	0.529	1.00	0.98-1.02	0.994	1.00	0.98-1.03	0.790	1.07	1.00-1.14	0.048
Male (vs. female)	0.95	0.66-1.36	0.777	1.24	0.76-2.01	0.387	0.81	0.51-1.28	0.369	0.43	0.12-1.64	0.218
Self-rated health as very good/good (vs. average/poor)	0.29	0.18-0.47	0.0001	0.71	0.34-1.50	0.371	0.20	0.12-0.35	0.0001	0.09	0.03-0.30	0.0001
>40 work hours/week (vs. ≤40 hours)	0.51	0.35-0.72	0.0001	0.51	0.32-0.81	0.004	0.57	0.36-0.89	0.014	0.34	0.10-1.18	0.090
Professional autonomy (score 1–7)	0.82	0.71-0.94	0.005	0.87	0.72-1.06	0.157	0.82	0.69-0.97	0.023	0.56	0.35-0.88	0.012
High levels of psychosocial work stress (vs. low levels)	0.96	0.63-1.47	0.854	0.95	0.53-1.70	0.871	0.99	0.58-1.69	0.968	0.46	0.09-2.35	0.349
Employed doctors (vs. self-employed doctors)	3.34	2.24-4.98	0.0001	3.74	2.13-6.56	0.0001	3.32	1.95-5.66	0.0001	0.83	0.23-2.93	0.766

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