Factorial validity and reliability of the General Health Questionnaire (GHQ-12) in the Brazilian physician population
Factorial validity and reliability of the General Health Questionnaire (GHQ-12) in the Brazilian physician population
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DOI：
10.1590/s0102-311x2010000700023
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发表时间：
2010-07-01
期刊：
影响因子：
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通讯作者：
Carneiro, Mauro Brandão
中科院分区：
文献类型：
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作者：
Gouveia, Valdiney V.;Barbosa, Genário Alves;Carneiro, Mauro Brandão
12项一般健康问卷(GHQ-12)是一种广泛使用的筛查工具。在一些国家已经确定了单因素和双因素结构。在巴西，最佳因素结构仍不明朗。本研究旨在了解其因素效度和信度，并对单因素模型和双因素模型进行检验。参与者是7512名巴西医生。他们回答了GHQ-12和人口统计学问题。通过主成分分析提取了GHQ-12的未旋转结构(单因素)和旋转结构(双因素)。验证性因素分析(ML)用于比较单因素解和双因素解。双因素模型比单因素模型对数据的拟合效果更好。这两个因素是抑郁和社交功能障碍，它们显示出彼此直接相关。它们还显示了足够的可靠性系数。双因素模型非常充分，显示出更好的匹配指数，尽管可以接受一个共同因素，可以定义为心理困扰。
The 12-item General Health Questionnaire (GHQ-12) is a widely used screening instrument. One-and two-factor structures have been identified in some countries. In Brazil, the best factor structure is still unclear. This study aimed at knowing its factorial validity and reliability, and testing the one-factor and two-factor models. The participants were 7,512 Brazilian physicians. They answered the GHQ-12 and demographic questions. Unrotated (one-factor) and rotated (two-factor) structures of the GHQ-12 were extracted by principal component analysis. Confirmatory factor analyses (ML) were used to compare the one-and two-factor solutions. The two-factor model fitted the data better than the one-factor one. Those two factors were depression and social dysfunction, and they showed themselves to be directly correlated to one another. They also showed adequate reliability coefficients. The two-factor model is remarkably adequate, showing better fit indices, although it is acceptable to admit a common factor, which could be defined as psychological distress.