Table 2. Odds ratios of type 2 diabetes according to physical activity level.

Physical activity level*	Cases (n=53)	Controls (n=155)	Sex- and age-adjusted odds ratio (95% CI)	Multivariable-adjusted odds ratio (95% CI)#
Lowest quartile	16	32	1.00	1.00
Quartile 2	16	38	0.76 (0.32-1.82)	0.43 (0.16-1.18)
Quartile 3	13	36	0.70 (0.28-1.71)	0.63 (0.23-1.72)
Highest quartile	8	49	0.31 (0.12-0.81)	0.18 (0.06-0.55)
p value for trend			0.017	0.005

* Quartiles (Baecke’s physical activity index): ≦7.6, 7.7-8.5, 8.6-9.3, and ≧9.4.

^# Adjusted for family history of diatetes, cigarette smoking, overweight, stress of life events, history of hypertension and meat, green vegetable and fiber intake.

CI: confidence interval