First, they included not only patients diagnosed with depression but also patients who had begun antidepressant treatment, even if only for an adjustment disorder. Second, their review of 35,546 subjects who were followed for 62,159 person-years resulted in an average follow-up of only 1.75 years. Third, their hierarchy differed from ours in that it included not only psychiatric inpatients and outpatients without the specification of suicidality but also any patient for whom an antidepressant was prescribed by any HMO provider. Last, we could not discern from their report the degree to which their cohort was successfully followed, as measured by the number with complete follow-up. Inclusion appeared to be based on continued HMO membership; the percentage of patients lost to follow-up because of lapsed HMO enrollment was not stated.