The association of age with physically demanding work by gender and the association of the interaction of age and gender with physically demanding work as odds ratios (OR) and their 95% confidence intervals (CI) from logistic regression analysis
| Physically demanding work | ||||
|---|---|---|---|---|
| Men | Women | |||
| OR | 95% CI | OR | 95% CI | |
| *Covariate is age as classified variable, model is stratified for gender. | ||||
| †Covariate is age as continuous variable, model is stratified for gender. The OR is interpreted as mean effect per 5 years of age in subjects of the same gender. | ||||
| ‡Covariate is interaction of age and gender in a single unstratified model. The main effects of age and gender were adjusted for. The OR is interpreted as mean effect per 5 years of age in women when compared to men. | ||||
| Modelling strategy 1* | ||||
| Age, year | ||||
| 40 | 1.00 | 1.00 | ||
| 45 | 1.13 | 0.74 to 1.74 | 0.88 | 0.73 to 1.05 |
| 50 | 0.86 | 0.56 to 1.33 | 1.01 | 0.84 to 1.21 |
| 55 | 0.66 | 0.43 to 1.02 | 0.82 | 0.68 to 0.97 |
| 60 | 0.70 | 0.42 to 1.16 | 0.80 | 0.64 to 0.99 |
| Modelling strategy 2† | ||||
| Age, 5 years | 0.88 | 0.78 to 0.97 | 0.95 | 0.91 to 0.99 |
| Modelling strategy 3‡ | ||||
| Gender × age, 5 years | 1.00 | 1.09 | 0.97 to 1.22 | |