The ORs (95% CIs) of acute myocardial infarction relative to few days off, and insufficient sleep according to weekly working hours in the recent past
| Weekly working hours in the past month | |||
|---|---|---|---|
| Days off or sleep | ≤60 OR (95%CI) | ≥61 OR (95%CI) | p Value for interaction |
| Adjusted for cigarette-year, alcohol drinking, overweight, hypertension, diabetes mellitus, hyperlipidaemia, parental coronary heart disease, job type, and sedentary job; p values are based on the likelihood ratio test. | |||
| Days off in the past month: | |||
| ≥2 | 1.0 (referent) | 1.3 (0.7 to 2.3) | |
| <2 | 2.1 (0.7 to 6.1) | 3.7 (1.2 to 11.8) | 0.85 |
| Days of <5 h sleep in the past week: | |||
| ≤1 | 1.0 (referent) | 1.8 (1.0 to 3.2) | |
| ≥2 | 3.6 (1.8 to 7.5) | 3.1 (0.8 to 12.2) | 0.98 |