Abstract
BackgroundFunctional impairment is prevalent in patients with first-episode psychosis (FEP). Longitudinal course of functioning in the early stage of psychotic illness is under-studied. In this report, we aimed to investigate the patterns and baseline predictors of social-occupational functional trajectories over 3 years, utilizing growth mixture modeling (GMM) analysis, in a large representative Chinese young FEP cohort in Hong Kong. MethodSix hundred seventeen consecutive patients aged 15–25 years presenting with first-episode non-affective psychosis to a specialized early intervention service were studied. Data on demographic, pre-treatment and baseline clinical characteristics were collected. Individual class membership of functioning derived from GMM was based on ratings on Social and Occupational Functioning Scale (SOFAS) measured at five different time-points (baseline, 6, 12, 24 and 36 months) across 3-year follow-up. ResultsFour distinct functional trajectories were identified including persistently poor (48.1%, n = 320), early improved (31.3%, n = 203), gradually improved (14.8%, n = 69) and improved-deteriorated (5.8%, n = 25) trajectories. Multinomial regression analysis revealed that male gender, lower educational attainment, a diagnosis of schizophrenia-spectrum disorder and a receipt of inpatient treatment upon initial presentation independently predicted persistently poor trajectory membership. ConclusionThe current study reveals a heterogeneous course of social-occupational functioning in FEP. Our finding that approximately half of the patients displaying persistently poor trajectory over 3 years indicates functional impairment as an unmet therapeutic need in early illness phase. Further research applying individual-based trajectory analysis in FEP is warranted to facilitate better characterization of longitudinal patterns of functioning and development of targeted intervention to promote early recovery.
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