Department of Orthopaedics, Oslo University Hospital, Kirkeveien 166, NO-0407 Oslo, Norway.
Phys Ther. 2011 Jul;91(7):1096-108. doi: 10.2522/ptj.20100357. Epub 2011 May 19.
No appropriate measures have been specifically developed for pelvic girdle pain (PGP). There is a need for suitable outcome measures that are reliable and valid for people with PGP for use in research and clinical practice.
The objective of this study was to develop a condition-specific measure, the Pelvic Girdle Questionnaire (PGQ), for use during pregnancy and postpartum.
This was a methodology study.
Items were developed from a literature review and information from a focus group of people who consulted physical therapists for PGP. Face validity and content validity were assessed by classifying the items according to the World Health Organization's International Classification of Functioning, Disability and Health. After a pilot study, the PGQ was administered to participants with clinically verified PGP by means of a postal questionnaire in 2 surveys. The first survey included 94 participants (52 pregnant), and the second survey included 87 participants (43 pregnant). Rasch analysis was used for item reduction, and the PGQ was assessed for unidimensionality, item fit, redundancy, and differential item functioning. Test-retest reliability was assessed with a random sample of 42 participants.
The analysis resulted in a questionnaire consisting of 20 activity items and 5 symptom items on a 4-point response scale. The items in both subscales showed a good fit to the Rasch model, with acceptable internal consistency, satisfactory fit residuals, and no disordered threshold. Test-retest reliability showed high intraclass correlation coefficient estimates: .93 (95% confidence interval=0.86-0.96) for the PGQ activity subscale and .91 (95% confidence interval=0.84-0.95) for the PGQ symptom subscale. Limitations The PGQ should be compared with low back pain questionnaires as part of a concurrent evaluation of measurement properties, including validity and responsiveness to change.
The PGQ is the first condition-specific measure developed for people with PGP. The PGQ had acceptably high reliability and validity in people with PGP both during pregnancy and postpartum, it is simple to administer, and it is feasible for use in clinical practice.
目前尚无专门针对骨盆带疼痛（PGP）的适当措施。对于患有 PGP 的人群，需要开发可靠且有效的特定于病情的结局测量工具，以便在研究和临床实践中使用。
本研究旨在开发一种特定于病情的测量工具，即骨盆带问卷（PGQ），用于妊娠和产后期间使用。
这是一项方法学研究。
从文献回顾和物理治疗师治疗 PGP 的焦点小组信息中开发项目。通过根据世界卫生组织的国际功能、残疾和健康分类对项目进行分类，评估项目的表面有效性和内容有效性。在进行试点研究之后，通过邮寄问卷在 2 次调查中向经临床确诊为 PGP 的参与者实施 PGQ。第一次调查包括 94 名参与者（52 名孕妇），第二次调查包括 87 名参与者（43 名孕妇）。使用 RASCH 分析进行项目删减，评估 PGQ 的单维性、项目拟合、冗余度和项目间差异。使用随机样本 42 名参与者评估测试-重测信度。
分析结果得出一个包含 20 个活动项目和 5 个症状项目的问卷，采用 4 点反应量表。两个分量表的项目均与 RASCH 模型拟合良好，内部一致性可接受，拟合残差满意，无无序阈值。测试-重测信度显示出较高的组内相关系数估计值：PGQ 活动分量表为.93（95%置信区间=0.86-0.96），PGQ 症状分量表为.91（95%置信区间=0.84-0.95）。局限性：PGQ 应与腰痛问卷进行比较，作为对测量特性（包括有效性和对变化的反应性）的并行评估的一部分。
PGQ 是专为患有 PGP 的人群开发的第一个特定于病情的测量工具。PGQ 在妊娠和产后期间患有 PGP 的人群中具有可接受的高可靠性和有效性，它易于管理，并且可在临床实践中使用。
