Trajectories of antipsychotic response in drug-naive schizophrenia patients: results from the 6-month ESPASS follow-up study
Article first published online: 18 APR 2013
© 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd
Acta Psychiatrica Scandinavica
How to Cite
Trajectories of antipsychotic response in drug-naive schizophrenia patients: results from the 6-month ESPASS follow-up study., , , , , .
- Article first published online: 18 APR 2013
- Manuscript Accepted: 6 MAR 2013
- antipsychotic agents;
- drug response;
The aim of this study was to explore any heterogeneity in the 6-month clinical response in patients with antipsychotic drug-naive schizophrenia and to determine predictors of that outcome.
467 patients with antipsychotic drug-naive schizophrenia were included in France nationwide and followed up over 6 months. To identify trajectories of clinical response, a latent class growth analysis (LCGA) was performed using the Clinical Global Impression-Severity (CGI-S) scores at baseline, 1, 3, and 6 months. Regression models were used to identify predictors of trajectory membership.
Five trajectory groups were identified: a rapid response group (n = 45), a gradual response group (n = 204), patients remaining mildly ill (n = 133), patients remaining very ill (n = 23), and a group with unsustained clinical response (n = 62). Predictors of the 6-month clinical response were baseline CGI-S score (odds ratio: 3.1; 95% confidence interval, 2.1–4.4) and negative symptoms (OR, 1.5; 95% CI, 1.2–1.9). The sole predictor of rapid response as compared to gradual response was employment (OR, 2.5; 95% CI, 1.2–4.9).
Clinical response in patients with schizophrenia 6 months after a first-ever antipsychotic drug initiation is heterogeneous. Therapeutic strategies in first episode should take account of symptom severity and early clinical response, to maximize the chances of recovery.