The latent structure of major depressive symptoms and its relationship with somatic disorder symptoms among Filipino female domestic workers in China

摘要

Emerging research have investigated the factor structure of major depressive disorder (MDD) symptoms based on DSM-5 nomenclature. However, to date, results have been inconsistent on what symptom-structure best represent MDD. This study examines the best fitting MDD among four competing models in a sample of overseas Filipino domestic helpers (N = 232). The results show that a two-factor model (Model 2b; Krause et al., 2010) provided the best fit. The model consist of two factors: somatic and non-somatic/affective symptoms. Somatic component includes sleep difficulties, fatigue, appetite changes, concentration difficulties, and psychomotor agitation/retardation while non-somatic/affective component covers anhedonia, depressed mood, feelings of worthlessness, and thoughts of death. Further, the results reveal a pattern where PHQ-15 somatic symptom items have a higher significant relationship with MDD's somatic symptoms than with the MDD's non-somatic/affective symptoms. These findings suggest that the items of model 2b are appropriately embedded in their respective factors. Differentiating MDD factors have important clinical implications, particularly in the diagnosis and treatment of depression among overseas Filipino domestic helpers.