Table 2

Schematic example of diabetes incidence associated with physical activity and smoking

Smoking statusLeisure-time physical activityNo.Observed no. of diabetesRisk over 18-year follow-up (per 1000)
0=non-smokers0=inactive17 1421680(1680/17 142)×1000=98.0
1=active5955496(496/5955)×1000=83.3
1=smoker0=inactive7327855(855/7327)×1000=116.7
1=active2495235(235/2495)×1000=94.2
Total0=inactive24 4692535(2535/24 469)×1000=103.6
1=active8450731(731/8450)×1000=86.5
Overall32 9193266(3266/32 919)×1000=99.2