Assessments of the Factor Structure and Psychometric Properties of the Persian Version of the 30-Item Drug Attitude Inventory in Patients with Schizophrenia.
Kiomars Najafi, Robabeh Soleimani, Samin Khoshnoud Speily, Negin Sadeh, Mohammad Ali Yazdanipour, Mohammad Hassan Novin
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引用次数: 0
Abstract
Background: Schizophrenia is a debilitating psychiatric disorder in which non-adherence to medication leads to symptom relapse, rehospitalization, reduced quality of life, and increased treatment costs; therefore, an appropriate tool is needed to assess the attitudes of patients with schizophrenia towards medication.
Methods: Three hundred patients with schizophrenia enrolled at the specialized neuropsychiatric clinic at Shafa Hospital in Rasht 2023 participated in this cross-sectional study. The patients filled out the Drug Attitude Inventory-30 (DAI-30) and a demographic questionnaire. Qualitative and quantitative methods were used to evaluate content validity. Face validity was assessed using qualitative content validity, and the content validity ratio (CVR) and content validity index (CVI) were computed for quantitative content validity. Kolmogorov-Smirnov test was used to assess the normal distribution of the questionnaire scores. Reliability was assessed using test-retest procedures and Cronbach's alpha. Data were analyzed using SPSS version 26, and confirmatory factor analysis (CFA) and model fit were performed using Smart PLS version 8.8. A P value<0.05 was considered statistically significant.
Findings: In this study, 211 participants (70.33%) were male and the mean±standard deviation (SD) of age was 40.32±10.87 years. All items of the Persian version of DAI-30 showed a CVR greater than 0.62 and CVI greater than 0.80, confirming their content validity. Construct validity showed sufficient internal correlations for conducting exploratory factor analysis (EFA). Cronbach's alpha for reliability was 0.983. The test-retest correlation coefficient was high (r=0.936, P<0.001).
Conclusion: The findings of this study recommend that the Persian version of the DAI-30 is a relevant and reliable measure for evaluating drug attitudes in patients with schizophrenia.
背景：精神分裂症是一种使人衰弱的精神疾病，不坚持服药会导致症状复发、再住院、生活质量下降和治疗费用增加；因此，需要一个合适的工具来评估精神分裂症患者对药物的态度。方法：在2023年拉什特沙法医院神经精神专科门诊登记的300例精神分裂症患者参加了这项横断面研究。患者填写了药物态度量表-30 （DAI-30）和人口统计问卷。采用定性和定量方法评价内容效度。采用定性内容效度评估面效度，采用定量内容效度计算内容效度比（CVR）和内容效度指数（CVI）。采用Kolmogorov-Smirnov检验评估问卷得分的正态分布。信度评估采用重测程序和Cronbach’s alpha。数据分析使用SPSS version 26，验证性因子分析（CFA）和模型拟合使用Smart PLS version 8.8。结果：男性211例（70.33%），年龄平均±标准差（SD）为40.32±10.87岁。波斯语版DAI-30的所有条目CVR均大于0.62，CVI均大于0.80，证实了其内容效度。构念效度具有足够的内在相关性，可进行探索性因子分析。信度的Cronbach's alpha为0.983。重测相关系数高（r=0.936, p）。结论：本研究结果提示波斯语版DAI-30量表可作为精神分裂症患者药物态度评估的一种相关、可靠的量表。
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