Table 4.
Risk of depression by potential confounders
| POTENTIAL CONFOUNDERS | HR Crude Analysis | HR adjusted for other potential confounders* |
|---|---|---|
| Prior personality disorders (any vs. none)a |
2.6 (2.0-3.4) |
1.8 (1.2-2.5) |
| IQ score (lowest vs. highest)1 |
2.9 (2.4-3.4) |
2.2 (1.7-2.8) |
| Risky use of alcohol indicators (none vs. at least one)b |
1.7 (1.5-2.0) |
1.1 (0.9-1.4) |
| Smoking (>20 cigarettes/day vs. non-smokers)2 |
2.6 (2.0-3.3) |
1.7 (1.2-2.4) |
| Disturbed behavior in childhood (very high vs. very low)3 |
3.8 (2.1-6.8) |
2.7 (1.3-5.4) |
| Social adjustment (very low vs. very good)4 |
2.2 (1.3-3.6) |
2.0 (1.0-3.9) |
| Early adulthood SEP (manual skill/unskilled vs. high/intermediate nonmanual)5 |
1.6 (1.3-2.0) |
1.2 (1.0-1.5) |
| Use of other drugs (any vs. none)c |
0.8 (0.3-2.3) |
0.6 (0.2-2.6) |
| Brought up in a city (metropolitan areas vs. rural)6 | 0.9 (0.8-1.1) | 0.8 (0.6-1.1) |
* adjusted for all potential confounders and cannabis use.
a, b, c dichotomous variable.
1, 2, 3, 4, 5, 6 categorical variables, only one exposure group presented in the table.