Chatman A B, Hyams S P, Neel J M, Binkley J M, Stratford P W, Schomberg A, Stabler M
Promina Northwest-Kennestone Hospital, Atlanta, Ga, USA.
Phys Ther. 1997 Aug;77(8):820-9. doi: 10.1093/ptj/77.8.820.
Assessing disability is important, and numerous interviewer-assisted and self-report questionnaires are used to accomplish this task. These questionnaires can be classified as being generic, condition or disease specific, or patient specific. The purpose of this study was to determine test-retest reliability, construct validity, and sensitivity to change of the Patient-Specific Functional Scale (PSFS) when applied to patients with knee dysfunction.
Subjects were 38 physician-referred patients with knee dysfunction.
The PSFS and the Medical Outcomes Study 36-Item Short-Form Health Survey were administered at a patient's initial visit and following 2 to 3 weeks of treatment. An assessment of global change was also made by the patient and clinician at follow-up. These measures allowed the assessment of construct validity and sensitivity to change. To obtain an estimate of reliability, the PSFS was also administered within 72 hours of the initial assessment.
Test-retest reliability and sensitivity to change were excellent (intraclass correlation coefficient [type 2,1] R = .84 and Pearson's r = .78, respectively). Validity was also confirmed.
Previous investigation on persons with low back pain suggested that the PSFS has promising measurement properties. The results of this study provide further evidence supporting the reliability, validity, and efficiency of the PSFS. Further investigation is needed to determine the extent to which the PSFS can be applied across a variety of conditions and age groups.
评估残疾情况很重要，为此使用了大量由访员协助的和自我报告的问卷。这些问卷可分为通用型、特定病症或疾病型或特定患者型。本研究的目的是确定特定患者功能量表（PSFS）应用于膝关节功能障碍患者时的重测信度、结构效度和对变化的敏感性。
研究对象为38名经医生转诊的膝关节功能障碍患者。
在患者初次就诊时以及治疗2至3周后，分别发放PSFS和医学结局研究36项简短健康调查。在随访时，患者和临床医生还对整体变化进行了评估。这些测量方法有助于评估结构效度和对变化的敏感性。为了获得信度估计值，在初次评估的72小时内再次发放PSFS。
重测信度和对变化的敏感性极佳（组内相关系数[2,1型]R分别为0.84和皮尔逊相关系数r为0.78）。效度也得到了证实。
先前对腰痛患者的调查表明，PSFS具有良好的测量特性。本研究结果进一步证明了PSFS的可靠性、效度和有效性。需要进一步研究以确定PSFS在各种病症和年龄组中的适用程度。
