Wright Heidi Hermann, O'Brien Virginia, Valdes Kristin, Koczan Barbra, MacDermid Joy, Moore Elizabeth, Finley Margaret A
Helping Hands Work and Wellness, Indianapolis, IN, USA.
Fairview Hand Center, University of Minnesota Medical Center-Fairview, Minneapolis, MN, USA.
J Hand Ther. 2017 Oct-Dec;30(4):538-545. doi: 10.1016/j.jht.2017.04.003. Epub 2017 Aug 12.
Prospective cohort correlation study.
There is no known published research on correlations between the Patient-Specific Functional Scale (PSFS), hand grip strength, and the Disability of the Arm, Shoulder and Hand (DASH) in a population with hand osteoarthritis (OA).
The purpose of this study is to establish reliability of the PSFS and to evaluate the relationship between the PSFS, hand grip strength, and the DASH for a population with hand OA.
Thirty-five participants in 4 hand clinics completed the PSFS, hand grip strength testing, and the DASH at the onset of therapy and at discharge. Eighteen participants enrolled at the primary investigator's site completed a baseline PSFS one week before the pretreatment collection with data used to establish relative and absolute reliability. Data were analyzed separately at pretreatment and posttreatment with Spearman's rho correlation (P < .05). Intraclass correlation (2, 1), standard error of the measurement, and minimum detectable change (MDC90 and MDC95) were calculated from the repeated baseline and pretreatment PSFS.
Intraclass correlation for PSFS was (r = 0.80) with the standard error of the measurement = 0.56, MDC90 = 1.30, and MDC95 = 1.56. Small correlation between the PSFS and DASH scores was found pretreatment (ρ = -0.10) and change scores (ρ = 0.13).
Excellent reliability with small measurement error has established clinical utility of the PSFS for the population with hand OA. These outcome measures were shown to measure different constructs and therefore should not be used interchangeably.
前瞻性队列相关性研究。
在患有手部骨关节炎（OA）的人群中，尚无关于患者特异性功能量表（PSFS）、握力与手臂、肩部和手部功能障碍（DASH）之间相关性的已发表研究。
本研究的目的是确定PSFS的可靠性，并评估手部OA患者群体中PSFS、握力和DASH之间的关系。
4家手部诊所的35名参与者在治疗开始时和出院时完成了PSFS、握力测试和DASH。在主要研究者所在地点招募的18名参与者在预处理数据收集前一周完成了基线PSFS，这些数据用于建立相对和绝对可靠性。在预处理和治疗后分别使用Spearman等级相关分析数据（P < 0.05）。根据重复的基线和预处理PSFS计算组内相关系数（2,1）、测量标准误差和最小可检测变化（MDC90和MDC95）。
PSFS的组内相关系数为（r = 0.80），测量标准误差 = 0.56，MDC90 = 1.30，MDC95 = 1.56。在预处理时发现PSFS与DASH评分之间存在小的相关性（ρ = -0.10），变化评分之间存在小的相关性（ρ = 0.13）。
具有小测量误差的出色可靠性确立了PSFS在手部OA患者群体中的临床实用性。这些结局指标被证明测量的是不同的结构，因此不应互换使用。
3级。
