Table 1

Hazard ratios for overall depression by reported frequency of cannabis use
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

* Adjustments for: prior personality disorders at conscription, IQ, disturbed behavior in childhood, social adjustment, risky use of alcohol, smoking, early adulthood socioeconomic position, use of other drugs, brought up in a city.

Manrique-Garcia et al.

Manrique-Garcia et al. BMC Psychiatry 2012 12:112   doi:10.1186/1471-244X-12-112

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