Indrebø Kirsten Lerum, Aasprang Anny, Olsen Torill Elin, Andersen John Roger
Department of Surgery, Førde Central Hospital, Førde, Norway.
Western Norway University of Applied Sciences, Førde, Norway.
Patient Relat Outcome Meas. 2021 Mar 15;12:65-75. doi: 10.2147/PROM.S300604. eCollection 2021.
The Ostomy Adjustment Scale (OAS), which consists of an overall sum score along with 34 single-item scores, has been frequently used to measure self-reported adjustment to life with an ostomy. However, it is unknown whether the OAS can be divided into meaningful thematic subscales that may make it easier to administer and to apply in a clinical feedback system.
The purpose of this study was to specify thematic OAS subscales and evaluate their psychometric properties.
A cross-sectional study was conducted with 302 patients across Norway having colostomy, ileostomy, or urostomy. The OAS items were divided into different subscales by expert nurses and patients based on clinical and theoretical considerations. The overall structural validity of this analysis of the OAS was examined using robust confirmatory factor analysis. We evaluated the overall goodness of fit using the root mean square error of approximation (RMSEA), the comparative fit index (CFI) and the Tucker-Lewis index (TLI). Factor loadings from the confirmatory factor analysis were used to calculate composite reliability values for the new OAS scales.
The OAS was divided into seven subscales. The overall structure validity was acceptable with RMSEA = 0.053 (90% CI, 0.045-0.060), CFI = 0.913 and TLI = 0.904. The composite reliability values of all scales were >0.70.
The OAS can be divided into seven clinically meaningful subscales with acceptable psychometric properties.
ClinicalTrials.gov Registration Number: NCT03841071. Date 18. February 2019 retrospectively registered.
造口调整量表（OAS）由一个总分及34个单项得分组成，常用于衡量自我报告的造口生活适应情况。然而，尚不清楚OAS是否可以分为有意义的主题性子量表，这可能会使其在临床反馈系统中更易于管理和应用。
本研究的目的是明确OAS的主题性子量表并评估其心理测量特性。
对挪威302例有结肠造口、回肠造口或尿路造口的患者进行了一项横断面研究。基于临床和理论考虑，由专业护士和患者将OAS项目分为不同的子量表。使用稳健验证性因子分析检验OAS这一分析的整体结构效度。我们使用近似均方根误差（RMSEA）、比较拟合指数（CFI）和塔克-刘易斯指数（TLI）评估整体拟合优度。验证性因子分析的因子载荷用于计算新OAS量表的组合信度值。
OAS被分为七个子量表。整体结构效度可接受，RMSEA = 0.053（90%CI，0.045 - 0.060），CFI = 0.913，TLI = 0.904。所有量表的组合信度值均>0.70。
OAS可分为七个具有可接受心理测量特性的临床有意义的子量表。
ClinicalTrials.gov注册号：NCT03841071。2019年2月18日追溯注册。
