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Supplementary Material for: Psychotic Symptoms and Attitudes toward Medication Mediate the Effect of Insight on Personal-Social Functions in Patients with Schizophrenia: One-Year Randomized Controlled Trial and Follow-Up
datasetposted on 14.02.2018 by Zheng Y., Ning Y., She S., Deng Y., Chen Y., Yi W., Lu X., Chen X., Li J., Li R., Zhang J., Xiao D., Wu H., Wu C.
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Aims: This study aimed to investigate the mediating pathway of 3 factors (psychotic symptoms, attitude toward medication, and cognitive processing speed) on the effect of insight on personal-social functioning in patients with schizophrenia. Methods: Chinese inpatients with schizophrenia (n = 168; mean age 18 ± 50 years) diagnosed according to the DSM-IV were randomly assigned to treatment with antipsychotic medication alone or combined treatment. Positive and Negative Syndrome Scale (PANSS), Drug Attitude Inventory (DAI), Assessment of Insight (SAI), and Social-Personal Performance Scale (PSPS) scores were evaluated at baseline and at 3, 6, and 12 months. Cognitive function was assessed at baseline. Multiple mediation analyses were conducted with baseline data, end point data, and changes-in-scale scores between baseline and the end point, respectively. Results: At baseline and at 12 months, only psychotic symptoms mediated the effect of insight on personal-social functioning. For changes-in-scale scores over the 12-month follow-up, in patients receiving treatment with medication alone, the effect of improved insight on improved personal-social function was mediated by psychotic symptoms only; in patients receiving a combined treatment, the effect of improved insight on improved personal-social functioning was mediated by both psychotic symptoms and attitudes toward medication, independently. Conclusions: The link between insight and personal-social functions is mainly mediated by psychotic symptoms. Psychosocial intervention improves the predicting effect of insight on personal-social function by improving both the attitude toward medication and psychotic symptoms independently.