Table 5 Multivariate Cox PH regression analyses with total days on benefit during 12 months follow‐up being the outcome variable, and work related and non‐work related factors as independent variables; basic model adjusted for age, gender and the variables that showed confounding effects on the basic variables depressive symptoms, fear‐avoidance and/or self efficacy (n = 160).

Variables*	Multivariate analysis with non‐work related factors		Multivariate analysis with all factors
	HR (95% CI)	p value	HR (95% CI)	p value
Age (years)	0.99 (0.97–1.01)	0.32	0.99 (0.98–1.01)	0.55
Gender (F v M)	1.05 (0.70–1.56)	0.83	1.11 (0.74–1.67)	0.62
Depressive symptoms	0.98 (0.97–1.01)	0.05	0.98 (0.95–1.01)	0.04
Fear‐avoidance	0.99 (0.94–1.04)	0.57	0.98 (0.92–1.04)	0.50
Self‐efficacy	0.96 (0.90–1.01)	0.12	0.96 (0.91–1.02)	0.23
Physical health	1.03 (1.01–1.05)	0.02	1.03 (1.01–1.05)	0.02
Pain	0.97 (0.89–1.07)	0.57	0.98 (0.89–1.07)	0.62
Family income†	1.26 (0.87–1.83)	0.22	1.23 (0.85–1.79)	0.28
Fear of income loss‡	0.74 (0.47–1.16)	0.18	0.70 (0.44–1.11)	0.13
Heavy loading	–	–	0.99 (0.96–1.03)	0.75
Decision latitude	–	–	0.98 (0.95–1.01)	0.13
Psychosocial demands	–	–	1.00 (0.98–1.03)	0.91

*Variables units used in the analysis are described in table 2.

Dummy variables: †<$60′000; ‡often.