Table 1 Hazard ratios for overall depression by reported frequency of cannabis use
From: Cannabis use and depression: a longitudinal study of a national cohort of Swedish conscripts
Cannabis use | No. exposed | No. cases | HR Crude | HR adjusted* |
|---|---|---|---|---|
Never | 39 978 | 990 | 1 | 1 |
Once | 1 202 | 28 | 0.9 (0.6-1.4) | 0.9 (0.6-1.5) |
2–4 | 1 486 | 51 | 1.4 (1.1-1.9) | 1.2 (0.8-1.8) |
5–10 | 839 | 24 | 1.2 (0.7-1.8) | 1.1 (0.6-1.8) |
11–50 | 727 | 24 | 1.3 (0.8-1.9) | 0.6 (0.3-1.2) |
>50 | 855 | 29 | 1.5 (1.0-2.2) | 0.8 (0.4-1.5) |
TOTAL | 45 087 | 1 146 |