To study predictors of suicidal behavior, individuals in the OCD cohort were followed-up from the date of the first diagnosis of OCD to the date of the outcomes of interest (death by suicide and attempted suicide), death other than suicide, emigration or end of follow-up (31 December 2013), whichever came first. Cox regression models were used to compute hazard ratios with 95% CI, taking time at risk into account.
