Similar questions regarding alcohol consumption and suicidal behaviour were asked of participants. An extract of the data are given below, stratified by males and females.
Males
| Alcohol consumption | Cases | Participants |
| Light | 31 | 2885 |
| Heavy | 7 | 1109 |
Females
| Alcohol consumption | Cases | Participants |
| Light | 26 | 4387 |
| Heavy | 4 | 542 |
Discuss statistical interaction and confounding by sex for the following effect measures:
-Risk difference
-Risk ratio
-Odds ratio
In your discussion compare your estimates with those from Question 1. Comment on similarities or differences on effect estimates, and likely reasons for these similarities or differences (limit of 1 page).
