Medical Psychology and Medical Sociology, University of Mainz, Department Psychosomatic Medicine, Mainz, Germany.
University of Münster, Department of Psychology, Münster, Germany.
PLoS One. 2019 Apr 5;14(4):e0213490. doi: 10.1371/journal.pone.0213490. eCollection 2019.
The SCL-K-9 is the latest short version of the multidimensional Symptom-Checklist 90-R. Up to now, its psychometric properties have not been clarified sufficiently as the nine items have not yet been presented exclusively in a representative sample. Therefore, psychometric properties, model fit values as well as norm-values were analyzed.
For the sample, N = 2,507 participants aged 14 to 92, n = 1,379 women and n = 1,128 men, and a mean age of 48.79 (SD = 17.91), were selected from the general population by random-route sampling. Confirmatory factor analyses applying full information maximum likelihood (FIML) tested the model fit. The reliability estimations and effect sizes were reported.
The items' discriminative power ranged between .49 to .65, and the Cronbach's Alpha was α = .87, which stands for a good reliability of the SCL-K-9. Norm values as well as gender and age specificities were presented in this section. The CFA with all nine items loading on one latent factor resulted in a good fit. There was evidence of invariance across age and gender groups.
Based on these results, the short screening version SCL-K-9 of the Symptom-Checklist 90-R showed good reliability and good model fit; specific norm values could be determined. Further studies should evaluate the usefulness of the standardization in clinical samples.
SCL-K-9 是多维症状清单 90-R 的最新短版本。到目前为止，由于这 9 个项目尚未在具有代表性的样本中单独呈现，因此其心理测量特性尚未得到充分阐明。因此，对心理测量特性、模型拟合值和规范值进行了分析。
从总人口中通过随机路线抽样，选取了 2507 名年龄在 14 至 92 岁之间的参与者，n=1379 名女性和 n=1128 名男性，平均年龄为 48.79（SD=17.91），作为样本。采用完全信息最大似然（FIML）的验证性因素分析来检验模型拟合度。报告了可靠性估计和效应大小。
项目的区分能力范围在.49 到.65 之间，克朗巴赫的α值为.87，表明 SCL-K-9 的可靠性良好。在这一部分还提供了规范值以及性别和年龄特异性。所有 9 个项目加载在一个潜在因素上的 CFA 得出了良好的拟合度。在年龄和性别组之间存在不变性的证据。
基于这些结果，症状清单 90-R 的简短筛查版本 SCL-K-9 表现出良好的可靠性和良好的模型拟合度；可以确定特定的规范值。进一步的研究应该评估在临床样本中的标准化的有用性。
