Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
UK National Institute for Health Research (NIHR) Biomedical Research Centre for Mental Health, South London and Maudsley Hospital, London, UK.
Int J Methods Psychiatr Res. 2023 Sep;32(3):e1961. doi: 10.1002/mpr.1961. Epub 2023 Feb 12.
Anxiety and depression symptoms are common in individuals with eating disorders. To study these co-occurrences, we need high-quality self-report questionnaires. The 19-item self-rated Comprehensive Psychopathological Rating Scale for Affective Syndromes (CPRS-S-A) is not validated in patients with eating disorders. We tested its factor structure, invariance, and differences in its latent dimensions.
Patients were registered by 45 treatment units in the Swedish nationwide Stepwise quality assurance database for specialised eating disorder care (n = 9509). Patients self-reported their anxiety and depression symptoms on the CPRS-S-A. Analyses included exploratory and confirmatory factor analyses (CFA) in split samples, and testing of invariance and differences in subscales across eating disorder types.
Results suggested a four-factor solution: Depression, Somatic and fear symptoms, Disinterest, and Worry. Multigroup CFA indicated an invariant factor structure. We detected the following differences: Patients with anorexia nervosa binge-eating/purging subtype scored the highest and patients with unspecified feeding and eating disorders the lowest on all subscales. Patients with anorexia nervosa or purging disorder show more somatic and fear symptoms than individuals with either bulimia nervosa or binge-eating disorder.
Our four-factor solution of the CPRS-S-A is suitable for patients with eating disorders and may help to identify differences in anxiety and depression dimensions amongst patients with eating disorders.
焦虑和抑郁症状在饮食障碍患者中很常见。为了研究这些共病，我们需要高质量的自我报告问卷。19 项自评综合精神病理学情感综合征评定量表（CPRS-S-A）尚未在饮食障碍患者中得到验证。我们测试了它的因子结构、不变性和潜在维度的差异。
患者由瑞典全国性逐步质量保证数据库中 45 个治疗单位登记（n=9509）。患者在 CPRS-S-A 上自我报告他们的焦虑和抑郁症状。分析包括在拆分样本中的探索性和验证性因子分析（CFA），以及在不同饮食障碍类型之间的子量表的不变性和差异的测试。
结果表明存在四因子解决方案：抑郁、躯体和恐惧症状、兴趣缺失和担忧。多组 CFA 表明因子结构具有不变性。我们检测到以下差异：神经性厌食症暴食/清除亚型的患者在所有子量表上得分最高，未指定的进食和饮食障碍患者得分最低。神经性厌食症或清除障碍患者比神经性贪食症或暴食障碍患者表现出更多的躯体和恐惧症状。
CPRS-S-A 的四因子解决方案适用于饮食障碍患者，并且可能有助于识别饮食障碍患者焦虑和抑郁维度的差异。
