Table 3. Hazard ratios (HRs) for incident type 2 diabetes according to cardiorespiratory fitness category.

Category	n	Person-years of follow-up	No. of cases	Age-adjusted HR (95% CI)	Model 1a HR (95% CI)	Model 2b HR (95% CI)
Under-RV	1946	26 091	183	1.00 (Reference)	1.00 (Reference)	1.00 (Reference)
Over-RV	2687	36 846	83	0.36 (0.28–0.48)	0.44 (0.34–0.58)	0.67 (0.51–0.89)
P value				<0.001	<0.001	0.005

Abbreviation: RV, reference value.

^aModel 1: Adjusted for age, systolic blood pressure, cigarette smoking, alcohol intake, and family history of diabetes.

^bModel 2: Adjusted for Model 1 covariates plus body mass index.