Multivariate adjusted OR (95% CI) of diabetes associated with sleep quality and sleep duration
| Sleep quality | Sleep duration | Adjusted OR | 95% CI | |
| Lower | Upper | |||
| Good | 6–8 h | 1 | ||
| ≥8 h | 1.01 | 0.84 | 1.24 | |
| ≤6 h | 0.99 | 0.61 | 1.59 | |
| Common | 6–8 h | 0.99 | 0.69 | 1.37 |
| ≥8 h | 1.03 | 0.89 | 1.23 | |
| ≤6 h | 1.15 | 0.70 | 1.43 | |
| Poor | 6–8 h | 1.02 | 0.71 | 1.46 |
| ≥8 h | 1.39 | 0.85 | 2.26 | |
| ≤6 h | 1.41 | 1.07 | 1.85 | |
The interaction between sleep quality and sleep duration is not significant, p=0.07. Adjusted for age, sex, education, employment, BMI, family history of diabetes, smoking status, alcohol consumption and physical activity.