BACKGROUND: Few prospective studies of course for first admission depressives are reported. METHODS: One hundred consecutive depressed inpatients were followed prospectively over 18 months. Course was defined operationally using the Hamilton Depression scale and ICD-10 criteria. Results were analysed using life-tables. RESULTS: The cumulative probabilities of remission onset by 3 and 18 months were 0.67 (95% C.I.=0.57-0.77) and 0.82 (95% C.I.=0.74-0.90). The cumulative probability of relapse was 0.25 (95% C.I.=0.15-0.35); 53% of those relapsing did so in the first 2 months. Younger age at onset, longer illness length, higher depression and anxiety ratings, predicted delayed remission onset. ICD-10 episode severity predicted relapse. CONCLUSIONS: The chances of remission onset at 3 months and relapse were increased relative to other studies; risk of chronicity was similar. Predictors of outcome to emerge were similar to other studies. CLINICAL IMPLICATIONS: Adoption of these remission onset criteria may identify earlier (at 3 months), subjects at high risk of chronicity. After remission onset, subjects with severe illnesses warrant careful follow-up to detect relapse, particularly during the first 2 months. LIMITATIONS: The operational criteria used were different to other prospective studies. Relatively few psychosocial variables were included in the analysis.
BACKGROUND: Few prospective studies of course for first admission depressives are reported. METHODS: One hundred consecutive depressed inpatients were followed prospectively over 18 months. Course was defined operationally using the Hamilton Depression scale and ICD-10 criteria. Results were analysed using life-tables. RESULTS: The cumulative probabilities of remission onset by 3 and 18 months were 0.67 (95% C.I.=0.57-0.77) and 0.82 (95% C.I.=0.74-0.90). The cumulative probability of relapse was 0.25 (95% C.I.=0.15-0.35); 53% of those relapsing did so in the first 2 months. Younger age at onset, longer illness length, higher depression and anxiety ratings, predicted delayed remission onset. ICD-10 episode severity predicted relapse. CONCLUSIONS: The chances of remission onset at 3 months and relapse were increased relative to other studies; risk of chronicity was similar. Predictors of outcome to emerge were similar to other studies. CLINICAL IMPLICATIONS: Adoption of these remission onset criteria may identify earlier (at 3 months), subjects at high risk of chronicity. After remission onset, subjects with severe illnesses warrant careful follow-up to detect relapse, particularly during the first 2 months. LIMITATIONS: The operational criteria used were different to other prospective studies. Relatively few psychosocial variables were included in the analysis.
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