Psychometric properties of the 7-item Generalized Anxiety Disorder scale in antepartum women from Ghana and Cote d'Ivoire
Psychometric properties of the 7-item Generalized Anxiety Disorder scale in antepartum women from Ghana and Cote d'Ivoire
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DOI：
10.1016/j.jad.2014.08.004
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发表时间：
2014-12-01
影响因子：
6.6
通讯作者：
Bindt, Carola
中科院分区：
文献类型：
--
作者：
Barthel, Dana;Barkmann, Claus;Bindt, Carola
背景资料：探讨西非孕妇7项广泛性焦虑障碍量表（GAD 7）的心理测量学特性。在一项横断面研究中，GAD 7，PHQ-9（患者健康问卷的抑郁模块）和WHO-DAS II对n=647名科特迪瓦和n=395名加纳低风险妊娠的产前妇女进行了12项世界卫生组织残疾量表（12项世界卫生组织残疾量表（第三季度;胎龄范围：28-40周）。结果：Cronbach’s a接近可接受水平（科特迪瓦c/=.69;加纳a =.67）。GAD-7与PHQ-9、WHO-DAS Ⅱ之间的相关分析证实了其一致性。关于因素效度的结果是模糊的：验证性和探索性因素分析表明，数据符合一维假设，但是，解释的方差是低的。IRT方法提示优秀的项目组合。措施然而，剩余主成分分析显示缺乏一维。Basch分析显示，未按预期使用响应选项。项目-人-适合不是最佳的，因为项目没有歧视以及对范围的潜在结构，其中大多数的妇女画角一般populations.Limitations：两个样本都有点同质的胎龄和城市居住;重测信度没有investigated.Conclusion：GAD-7符合CTT的要求。然而，采用双边投资条约的更严格标准，提出了可能改进的领域。跨文化适应和二分法的反应格式可能会改善GAD-7在撒哈拉以南国家的使用。(C)2014 Elsevier B. V.保留所有紧身衣。
Background: To explore the psychometric properties of the 7-item Generalized Anxiety Disorder scale (GAD 7) in West African pregnant women.Methods: In a cross-sectional study, the GAD 7, the PHQ-9 (depression module of the Patient Health Questionnaire) and the WHO-DAS II (12 item World Health Organization Disability Scale) were administered to n=647 Ivorian and n=395 Ghanaian antepartum women with low risk pregnancies (third trimester; gestational age range: 28-40 weeks) in 2010-2011. Statistical analyses combined classical Lest theory (CTT) arid item response theory (IRT).Results: Cronbach's a was close to acceptable (c/=.69 in Me d'Ivoire; a =.67 in Ghana). Consiruct validity was demonstrated by correlations between the GAD -7 and both the PHQ-9 ancl the WHO-DAS ll. Results regarding factorial validity were ambiguous: confirmatory and exploratory factor analyses indicated that the data fit the unidimensionalny assumption; however, the explained variance was low. IRT methods suggested excellent item inkt and outfit. measures. Yet, residual principal component analyses showed a lack of unidimensionaliLy. Basch analyses revealed that the response options were not used as intended. Item-person-fit was not optimal since the items did not discriminate well on the range of the latent construct where most of the women drawn horn the general population were located.Limitations: Both samples were somewhat homogenous regarding gestational age and urban residence; test-retest reliability was not investigated.Conclusion: The GAD-7 met the requirements of CTT. However, applying the stricter criteria of BIT suggested areas for potential improvements. Cross-cultural adaption and a dichotomized response format might ameliorate the GAD-7 for the use in sub-Saharan countries. (C) 2014 Elsevier B.V. All tights reserved.