The purpose of this study was to develop a statistical model of anhedonia of depression. The study included 748 healthy controls (350 women, 46.79%, age 21.27 ± 4.72) and 80 patients (32 women, 40%, age 38.36 ± 16.42). The Physical Anhedonia Scale (PhAS), the Social Anhedonia Scale (CSAS), the Positive and Negative Affect Scale (PANAS) and the Beck Depression Inventory(BDI) were administered. Classical Measurement Theory (CTT) and Item Response Theory (IRT) were applied to the collected data. We observed that the general factor of depression status was significantly related with positive emotion (r = –0.37, P < 0.05), negative emotion (r = 0.62, P < 0.05) and BDI (r = 0.48, P < 0.01). A significant difference also was observed between controls and patients. The bifactor model of anhedonia of depression provided a better fit to the data than a unidimensional model. The bifactor model appears to be useful to describe anhedonia in depression.

中文翻译：

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抑郁症的身体和社会快感缺失：双因素模型分析

本研究的目的是开发抑郁症快感缺乏的统计模型。该研究包括 748 名健康对照（350 名女性，46.79%，年龄 21.27 ± 4.72）和 80 名患者（32 名女性，40%，年龄 38.36 ± 16.42）。管理身体快感缺乏量表 (PhAS)、社会快感缺乏量表 (CSAS)、正面和负面影响量表 (PANAS) 和贝克抑郁量表 (BDI)。经典测量理论（CTT）和项目反应理论（IRT）被应用于收集的数据。我们观察到抑郁状态的一般因素与积极情绪(r = –0.37, P < 0.05)、消极情绪(r = 0.62, P < 0.05)和BDI (r = 0.48, P < 0.01)显着相关。在对照组和患者之间也观察到显着差异。抑郁症快感缺乏的双因子模型比单维模型更适合数据。双因子模型似乎有助于描述抑郁症的快感缺失。