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Impact of duration of untreated psychosis on remission in first-episode schizophrenia in Thailand: a cohort study

ABSTRACT

Background:

To scale up the services for first-episode schizophrenia in Thailand, it is essential to understand to what extent health care-seeking is delayed, and how much the delay affects the treatment outcome.

Objectives:

To investigate the duration of untreated psychosis (DUP) and its impact on remission in first-episode schizophrenia across the country.

Methods:

276 outpatients with a first-episode schizophrenia were followed for 6 months and assessed whether they fulfilled the criteria for remission at the follow-up. The proportion of those achieving remission was compared by the DUP. The impact of DUP on remission was estimated in multivariate analyses.

Results:

At the follow-up, 83% (71/86) of patients who had met the criteria for symptomatic remission at the baseline achieved enduring remission, whereas 63% (119/190) of patients who had not met the criteria for symptomatic remission at baseline met it at the follow-up. The shorter the DUP, the higher the proportion of those who achieved symptomatic or enduring remission at the follow-up. The impact of DUP on symptomatic remission appeared to be significant after controlling for other factors influencing remission.

Conclusion:

Since the DUP would influence remission of patients with schizophrenia, early detection and intervention services should be provided in Thailand.

Keywords:
Duration of untreated psychosis; first-episode schizophrenia; remission; cohort; Thailand

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