Table 3.

Adjusted hazard ratios (HR*) with 95% confidence intervals (CI) for hospitalization due to meniscal lesions or other knee injuries

Risk factor		N all	Meniscal lesion			Other knee injury
			N cases	HR	95% Cl	N cases	HR	95% Cl
Age at baseline		4713	224	0.96	0.94–0.97	114	0.99	0.97–1.02
Gender	Men	2320	97	1		50	1
	Women	2393	127	1.15	0.84–1.57	64	1.29	0.82–2.01
Education	<8 years	2831	118	1		62	1
	8–12 years	1194	68	1.01	0.74–1.39	29	0.98	0.61–1.55
	>12 years	688	38	0.83	0.56–1.23	17	0.96	0.53–1.73
Physical strenuousness of work	Light	1264	65	1		28	1
	Moderate	1954	115	1.20	0.86–1.64	39	0.90	0.55–1.49
	Heavy	1043	35	0.77	0.48–1.20	29	1.53	0.86–2.71
	Not at work	452	9	0.81	0.39–1.65	18	2.80	1.47–5.34
BMI	< 25.0	2394	116	1		63	1
	25.0–29.9	1767	80	1.21	0.90–1.63	39	0.89	0.59–1.35
	≥ 30.0	552	28	1.62	1.06–2.48	12	0.96	0.51–1.81
Leisure time physical exercise	Little	1445	58	1		25	1
	Irregular	2412	105	0.97	0.70–1.34	64	1.64	1.03–2.64
	Regular	856	61	1.53	1.05–2.23	25	1.88	1.05–3.36
Smoking	Never- smoker	2434	124	1		66	1
	Ex-smoker	968	47	0.99	0.70–1.41	20	0.79	0.46–1.35
	Current smoker	1311	53	0.88	0.62–1.25	28	0.86	0.52–1.41
Alcohol intake	0 g/wk	1654	63	1		41	1
	1–49 g/wk	2356	130	1.23	0.94–1.79	55	1.06	0.68–1.63
	50–249 g/wk	698	31	1.26	0.77–2.06	18	1.47	0.52–1.41

*Adjusted for other variables in the model