Measures for estimation of the biological interaction between sleep quality and sleep duration for the prevalence of impaired fasting glucose in participants
| Measures of biological interaction | Estimate (95% CI) |
|---|---|
| Poor sleep quality versus sleep duration <6 h | |
| RERI | 1.69 (0.31 to 3.76) |
| AP | 0.42 (0.15 to 0.61) |
| S | 2.85 (2.14 to 3.92) |
| Good sleep quality versus sleep duration >8 h | |
| RERI | 0.78 (0.12 to 1.43) |
| AP | 0.61 (0.26 to 0.87) |
| S | −0.65 (−0.94 to −0.27) |
Reference group is good sleep quality with 6–8 h sleep duration.
Adjusted for age, sex, education, occupation, BMI, family history of diabetes, smoking status, alcohol consumption and hypertension.
AP, attributable proportion; BMI, body mass index; RERI, relative excess risk of interaction; S, synergy index.