Blomqvist Ida, Chaplin John Eric, Henje Eva, Dennhag Inga
Department of Clinical Science, Child- and Adolescent Psychiatry, Umeå University, 90185, Umeå, Sweden.
Department of Pediatrics, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden.
Qual Life Res. 2025 May;34(5):1265-1275. doi: 10.1007/s11136-025-03898-y. Epub 2025 Jan 30.
The objective of this study is to assess the psychometric properties and reliability of the Swedish Patient-Reported Outcomes Measurement Information System (PROMIS) item banks for anxiety and depressive symptoms with item response theory analysis and post-hoc computerized adaptive testing in a combined Swedish Child and Adolescent Psychiatry (CAP) and school sample.
Participants (n = 928, age 12-20) were recruited from junior and high schools and Child and Adolescent Psychiatry Clinics in the region of Västerbotten. Unidimensionality, local independence, and monotonicity was tested. We fitted a graded response model to the data and tested differential item functioning (DIF) for sex, age group, sample type, and language (Swedish vs. U.S.). Moreover, a post-hoc computer adaptive testing (CAT) simulation was performed. All analysis were made in R.
Unidimensionality, local independence, and monotonicity were acceptable. The graded response model yielded acceptable item fit, discriminative, and threshold values for all items in both item banks. DIF for language (Swedish vs. U.S.) was found for two items from the anxiety and one item from the depressive symptoms item banks. A Stocking-lord transformation was used for the items displaying language DIF, and post-hoc CAT simulations were performed. The post-hoc CAT simulation showed reliability around 0.9 for both Swedish and official U.S. item parameters T-scores calibration from within normal limits to severe anxiety and depressive symptoms.
The Swedish pediatric PROMIS item banks of anxiety and depressive symptoms are appropriate to assess mild to severe symptoms of anxiety and depressive symptoms in Swedish school- and CAP samples.
本研究的目的是通过项目反应理论分析以及在瑞典儿童和青少年精神病学（CAP）与学校样本相结合的事后计算机自适应测试，评估瑞典患者报告结果测量信息系统（PROMIS）焦虑和抑郁症状项目库的心理测量特性和可靠性。
参与者（n = 928，年龄12 - 20岁）从韦斯特博滕地区的初中、高中以及儿童和青少年精神病诊所招募。测试了单维度性、局部独立性和单调性。我们对数据拟合了分级反应模型，并测试了性别、年龄组、样本类型和语言（瑞典语与美式英语）的项目功能差异（DIF）。此外，进行了事后计算机自适应测试（CAT）模拟。所有分析均在R中进行。
单维度性、局部独立性和单调性是可接受的。分级反应模型为两个项目库中的所有项目产生了可接受的项目拟合、区分度和阈值。在焦虑症状项目库中有两个项目以及抑郁症状项目库中有一个项目发现了语言（瑞典语与美式英语）的项目功能差异。对显示语言项目功能差异的项目使用了斯托金 - 洛德变换，并进行了事后CAT模拟。事后CAT模拟显示，对于瑞典语和美国官方项目参数T分数校准，从正常范围到严重焦虑和抑郁症状，可靠性约为0.9。
瑞典儿科PROMIS焦虑和抑郁症状项目库适用于评估瑞典学校和CAP样本中轻度至重度焦虑和抑郁症状。
