Gross Douglas P, Battié Michele C, Asante Alexander K
Department of Physical Therapy, University of Alberta, Edmonton, AB, Canada.
Arch Phys Med Rehabil. 2008 Jul;89(7):1294-9. doi: 10.1016/j.apmr.2007.11.040. Epub 2008 Jun 13.
To examine the construct and predictive validity of the Patient-Specific Functional Scale (PSFS) in workers' compensation claimants.
Prospective cohort study with 1-year follow-up.
A workers' compensation rehabilitation facility.
Subjects included 294 claimants with a variety of musculoskeletal disorders. The sample was predominantly male (70%), with a mean age of 44 years. Subjects completed a battery of measures at baseline including the PSFS, the Pain Disability Index (PDI), and the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36).
Not applicable.
Outcomes for determining predictive validity included administrative indicators of timely return to work and recovery during the 1-year follow-up. Analysis included Pearson correlation and multivariable Cox and logistic regression.
At baseline, the PSFS correlated moderately (r range, 0.3-0.5) with other indicators of functional limitation (PDI, SF-36 role-physical subscale) but negligibly with the SF-36 mental health and role-emotional subscales. The PSFS was associated with timely recovery (adjusted hazard ratio, 1.16; 95% confidence interval, 1.07-1.27) with increasing functional limitation related to delayed recovery.
Results provide construct and predictive validity evidence for the PSFS as an indicator of functional limitation in workers' compensation claimants.
检验特定患者功能量表（PSFS）在工伤索赔者中的结构效度和预测效度。
为期1年随访的前瞻性队列研究。
一家工伤康复机构。
受试者包括294名患有各种肌肉骨骼疾病的索赔者。样本以男性为主（70%），平均年龄44岁。受试者在基线时完成了一系列测量，包括PSFS、疼痛残疾指数（PDI）和医学结局研究36项简短健康调查（SF - 36）。
不适用。
用于确定预测效度的结局包括1年随访期间及时复工和康复的管理指标。分析包括Pearson相关性分析以及多变量Cox和逻辑回归分析。
在基线时，PSFS与功能受限的其他指标（PDI、SF - 36身体功能子量表）呈中度相关（r范围为0.3 - 0.5），但与SF - 36心理健康和情绪功能子量表的相关性可忽略不计。PSFS与及时康复相关（调整后的风险比为1.16；95%置信区间为1.07 - 1.27），功能受限增加与康复延迟相关。
研究结果为PSFS作为工伤索赔者功能受限指标提供了结构效度和预测效度证据。
