Table 6. Risk Estimates for Development of Diabetes Between Baseline and 5-Year Surveys According to Initial Cigarette Smoking Status and Years Since Quitting Cigarettes Among Men in the Japan Public Health Centered-Based Prospective Study.
| Smoking Exposure | n of developed cases | n | % of cases | Age and area adjusted OR (95% confidence interval) | Multivariate OR1 (95% confidence interval) | Multivariate OR2 (95% confidence interval) |
| n = 35,320 | ||||||
| Never smokers | 291 | 8720 | 3.3% | 1.00 | 1.00 | 1.00 |
| Current smokers | 577 | 18384 | 3.1% | 0.97 (0.84–1.12) | 0.95 (0.82–1.10) | 1.06 (0.91–1.23) |
| Former smokers | ||||||
| <5 years since quitting | 87 | 1888 | 4.6% | 1.42 (1.11–1.82) | 1.40 (1.09–1.79) | 1.41 (1.10–1.81) |
| 5–<10 years since quitting | 77 | 2030 | 3.8% | 1.15 (0.89–1.49) | 1.13 (0.87–1.46) | 1.12 (0.87–1.46) |
| 10–<15 years since quitting | 46 | 1780 | 2.6% | 0.77 (0.56–1.05) | 0.72 (0.53–1.00) | 0.73 (0.53–1.00) |
| 15–<20 years since quitting | 35 | 1148 | 3.1% | 0.90 (0.63–1.29) | 0.86 (0.60–1.23) | 0.87 (0.61–1.25) |
| 20 - years since quitting | 49 | 1370 | 3.6% | 0.99 (0.72–1.35) | 0.95 (0.70–1.30) | 0.95 (0.69–1.29) |
1
Adjusted for age, hypertension, alcohol intake, family history of diabetes, study area and leisure time physical activity.
2
Multivariate model additionally adjusted for BMI.