Table 5.

RR of diabetes by number of low-risk factors^a

	Person-years	Cases	RRb	95% CI	P trend
None	32 554	435	1.00		0.001
1 low-risk factor	113 343	880	0.66	0.59–0.74
2 low-risk factors	169 639	665	0.38	0.33–0.42
3 low-risk factors	118 881	251	0.22	0.19–0.26
4 low-risk factors	27 538	36	0.14	0.10–0.19

^aLow risk factors: BMI ≤ 23, low WHR, exercise participation, and member of cluster 2.

^bRR adjusted for age, kcal/day, alcohol consumption, smoking, education level, income level, occupation and hypertension.