Table 3.

Multivariable analysis of quality of life (global QLI)

	Univariable			Multivariable
	β	95% CI	Pvalue	β	95% CI	Pvalue
Case (ref: control)	−0.73	−1.62–0.16	.108	0.17	−0.64–0.98	0.674
Age in 2008 (yr)	−0.00	−0.08–0.07	.925	−0.05	−0.12–0.01	.124
Primary, secondary, high school (ref: 1–5 year postsecondary education)	−0.94	−2.13–0.25	.122
>5 year postsecondary school (ref: 1–5 year postsecondary education)	0.82	−0.08–1.71	.075
Household income ≥750 000 NOK (ref: <750 000 NOK)	2.22	1.43–3.01	<.001	1.74	1.00–2.48	<.001
Overweight ≥25 (ref: BMI <25)	−1.10	−1.94–−0.27	.010
Daily smoker (ref: not daily smoker)	−1.42	−2.74–−0.10	.035
Alcohol consumption, more than once per week (ref: once a week or less)	0.42	−0.41–1.25	.323
Co-morbidity	−0.92	−1.25–−0.60	<.001	−0.66	−0.97–−0.35	<.001
Pain (ref: no pain)	−2.90	−3.99–−1.81	<.001
Sick leave two weeks or more (ref: <2 weeks)	−2.10	−3.07–−1.14	<.001
Often or always physically exhausted from work (ref: never/rarely)	−2.74	−3.62–−1.86	<.001	−0.79	−1.70–0.12	.087
Often or always mentally exhausted from work (ref: never/rarely)	−2.60	−3.37–−1.83	<.001	−1.45	−2.24–−0.65	<.001
Poor health (ref: good)	−5.61	−7.17–−4.05	<.001	−3.69	−5.33–−2.04	<.001
Miscarriage (ref: no miscarriage)	0.58	−0.275–1.434	.183	0.89	0.13–1.65	.022

CI, confidence interval; NOK, norwegian kroner (100 NOK = ~13 euros).

Interaction is not present in the model.