Department of General Practice & Elderly Care Medicine, Amsterdam Public Health, Amsterdam UMC, Vrije Universiteit Amsterdam, Van der Boechorststraat 7 (room B-357), 1081 BT, Amsterdam, The Netherlands.
Amsterdam Rehabilitation Research Center | Reade, Amsterdam, The Netherlands.
Qual Life Res. 2020 Sep;29(9):2563-2572. doi: 10.1007/s11136-020-02506-5. Epub 2020 Apr 21.
To develop and test the validity of a Patient-Reported Outcomes Measurement Information System (PROMIS®) short form for measuring physical function of geriatric rehabilitation patients.
Experts selected items from the Dutch-Flemish PROMIS v1.2 Physical Function (PROMIS-PF) item bank and proposed new items to develop the PROMIS-PF short form for geriatric rehabilitation (PROMIS-PF-GR). Patients evaluated its content validity. Structural validity was assessed by evaluating unidimensionality (confirmatory, exploratory, and bi-factor analyses [criterion: Omega H > 0.80 and ECV > 0.60]), local independence (criterion: residual correlation < 0.20) ,and monotonicity (criterion: H-coefficient ≥ 0.30). Measurement invariance was assessed by evaluating Differential Item Functioning (DIF) between geriatric rehabilitation patients and people from the general population using ordinal logistic regression. Internal consistency was assessed by calculating Cronbach's alpha (criterion: alpha ≥ 0.70).
Experts selected 24 items from the PROMIS-PF item bank and proposed one new item which was not included in the short form. Patients considered the 24 items relevant and containing essential information. The PROMIS-PF-GR's psychometric properties were evaluated in 207 patients (mean age ± SD, 80.0 ± 8.3 year; 58% female). The 24 items were found to be sufficiently unidimensional (Omega H = 0.82, ECV = 0.70), locally independent (98.7% item pairs), and monotone (all ≥ 0.32). Five items were flagged for DIF, but their impact on the total score was negligible. Cronbach's alpha was 0.94.
The PROMIS-PF-GR was developed from the PROMIS-PF and has good content validity, structural validity, measurement invariance, and internal consistency in Dutch geriatric rehabilitation patients. We recommend to confirm the content validity of the PROMIS-PF-GR in other countries.
开发和验证用于测量老年康复患者身体功能的患者报告结局测量信息系统（PROMIS®）简体中文短式量表的有效性。
专家从荷兰-佛兰芒 PROMIS v1.2 身体功能（PROMIS-PF）条目库中选择条目，并提出新条目来开发用于老年康复的 PROMIS-PF 简体中文短式量表（PROMIS-PF-GR）。患者评估其内容效度。结构效度通过评估单维性（验证性、探索性和双因子分析[标准：Omega H > 0.80 和 ECV > 0.60]）、局部独立性（标准：残差相关性 < 0.20）和单调性（标准：H 系数≥0.30）来评估。通过使用有序逻辑回归评估老年康复患者与一般人群之间的项目功能差异（DIF）来评估测量不变性。内部一致性通过计算 Cronbach's alpha（标准：alpha ≥ 0.70）来评估。
专家从 PROMIS-PF 条目库中选择了 24 个条目，并提出了一个不在短式量表中的新条目。患者认为这 24 个条目是相关的，包含了必要的信息。对 207 名患者（平均年龄±标准差，80.0±8.3 岁；58%女性）进行了 PROMIS-PF-GR 的心理测量学特性评估。发现这 24 个条目具有足够的单维性（Omega H = 0.82，ECV = 0.70）、局部独立性（98.7%的条目对）和单调性（均≥0.32）。有 5 个条目存在项目功能差异，但对总分的影响可以忽略不计。Cronbach's alpha 为 0.94。
PROMIS-PF-GR 是从 PROMIS-PF 发展而来的，在荷兰老年康复患者中具有良好的内容效度、结构效度、测量不变性和内部一致性。我们建议在其他国家确认 PROMIS-PF-GR 的内容效度。
