The Research Clinic for Functional Disorders and Psychosomatics, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark.
J Clin Epidemiol. 2012 Jan;65(1):30-41. doi: 10.1016/j.jclinepi.2011.03.012. Epub 2011 Jul 20.
This study aimed to test the validity of the 36-item Short-Form Health Survey (SF-36) scales and summaries in patients with severe functional somatic syndromes (FSS), such as fibromyalgia and irritable bowel syndrome.
One hundred twenty patients with severe FSS enrolled in a randomized controlled trial filled in the SF-36 questionnaire. We tested for data quality, central scaling assumptions, and agreement with the conceptual model.
Most SF-36 scales were found to be valid; however, three scales (role physical, role emotional, and general health) did not satisfy predefined criteria for construct validity, internal consistency, or targeting to the sample. The correlations between SF-36 scales differed considerably from those reported in the general population. As a consequence, the SF-36 summaries, physical component summary (PCS) and mental component summary (MCS), did not accurately reflect their underlying scales and were negatively correlated (r=-0.46, 95% CI [-0.60 to -0.31]).
Although the SF-36 is a valuable instrument to assess perceived health in patients with severe FSS, there are problems with some of the scales and with the scoring procedure of the summaries. The SF-36 PCS may, therefore, not accurately measure the physical health status of these patients. Alternative summary measures are needed.
本研究旨在检验 36 项简短健康调查（SF-36）量表及综合评分在严重功能性躯体综合征（FSS）患者（如纤维肌痛和肠易激综合征）中的有效性。
120 名患有严重 FSS 的患者参加了一项随机对照试验，填写了 SF-36 问卷。我们对数据质量、中心标度假设以及与概念模型的一致性进行了检验。
大多数 SF-36 量表被认为是有效的；然而，有三个量表（生理职能、情感职能和一般健康）不符合构建有效性、内部一致性或针对样本的预设标准。SF-36 量表之间的相关性与一般人群中报告的相关性有很大差异。因此，SF-36 综合评分，生理成分综合评分（PCS）和心理成分综合评分（MCS），不能准确反映其基础量表，且呈负相关（r=-0.46，95%置信区间[-0.60 至-0.31]）。
尽管 SF-36 是评估严重 FSS 患者感知健康的一种有价值的工具，但其中一些量表和综合评分的评分程序存在问题。因此，SF-36 PCS 可能无法准确测量这些患者的身体健康状况。需要替代的综合评估方法。
