基于经典测量理论和概化理论的慢性病生活质量量表 QLICD-CG 下的慢性胃炎量表的编制与验证。
Development and Validation of the Chronic Gastritis Scale Under the System of Quality of Life Instruments for Chronic Diseases QLICD-CG Based on Classical Test Theory and Generalizability Theory.
机构信息
School of Humanities and Management, Research Center for Quality of Life and Applied Psychology, Key Laboratory for Quality of Life and Psychological Assessment and Intervention, Guangdong Medical University, Dongguan.
School of Public Health, Kunming Medical University.
出版信息
J Clin Gastroenterol. 2022 Feb 1;56(2):e137-e144. doi: 10.1097/MCG.0000000000001511.
BACKGROUND AND AIM
Quality of life (QOL) for patients with chronic gastritis (CG) is of interest worldwide and disease-specific instruments are needed for clinical research and practice. This paper focused on the development and validation of the CG scale under the system of Quality of Life Instruments for Chronic Diseases (QLICD-CG) by the modular approach and both classical test theory and generalizability theory.
METHODS
The QLICD-CG was developed based on programmed decision procedures including multiple nominal and focus group discussions, in-depth interviews and quantitative statistical procedures. Based on the data measuring QOL 3 times before and after treatments from 142 inpatients with CG, the psychometric properties of the scale were evaluated with respect to validity, reliability and responsiveness employing correlation analysis, multi-trait scaling analysis, factor analyses, t tests and also G studies and D studies of generalizability theory analysis.
RESULTS
Correlation, multi-trait scaling and factor analyses confirmed good construct validity and criterion-related validity when using SF-36 as a criterion. The internal consistency α for all domains were higher than 0.70 except for the social domain (0.62). Test-retest reliability coefficients (Pearson r and intraclass correlations) for the overall score and all domains were higher than 0.80 except for the social domain (0.77), while they were ranging between 0.72 to 0.94 at facets level; The overall score and scores for all domains/facets had statistically significant changes (P<0.01) after treatments except for facets of social effects and sexual function with standardized response mean ranging from 0.04 to 1.03, but from 0.34 to 1.03 for the domain level scores. G-coefficients and index of dependability (Ф coefficients) confirmed the reliability of the scale further with more exact variance components, and decision information on number of items changing.
CONCLUSIONS
The QLICD-CG could be used as a useful instrument in assessing QoL for patients with CG, with good psychometric properties including validity, reliability and responsiveness and also several advantages.
背景与目的
全球范围内都关注慢性胃炎（CG）患者的生活质量（QOL），需要针对临床研究和实践的疾病特异性工具。本文通过模块化方法以及经典测试理论和可概括性理论，专注于在慢性病生活质量工具（QLICD-CG）系统下开发和验证 CG 量表。
方法
根据程序决策程序（包括多次名义和焦点小组讨论、深入访谈和定量统计程序）开发了 QLICD-CG。基于对 142 名 CG 住院患者治疗前后 3 次测量的 QOL 数据，通过相关分析、多特质评分分析、因子分析、t 检验以及可概括性理论分析中的 G 研究和 D 研究，评估了量表的心理测量特性，包括有效性、信度和反应度。
结果
相关性、多特质评分和因子分析证实了使用 SF-36 作为标准时，该量表具有良好的结构有效性和效标相关性。除社会领域（0.62）外，所有领域的内部一致性α均高于 0.70。除社会领域（0.77）外，总分和所有领域的测试重测信度系数（Pearson r 和组内相关系数）均高于 0.80，而在方面层面，它们在 0.72 到 0.94 之间；除社会影响和性功能方面外，所有领域/方面的总分和得分在治疗后均有统计学意义上的变化（P<0.01），而在领域水平得分中，标准反应均值范围从 0.04 到 1.03，从 0.34 到 1.03。G 系数和可靠性指标（Ф 系数）进一步证实了量表的可靠性，具有更准确的方差分量和关于项目变化数量的决策信息。
结论
QLICD-CG 可作为评估 CG 患者生活质量的有用工具，具有良好的心理测量特性，包括有效性、信度和反应度，同时还具有多项优势。
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