巴西版生活质量影响量表（IWQOL-Lite）的心理测量学评估。
Psychometric evaluation of a Brazilian version of the impact of weight on quality of life (IWQOL-Lite) instrument.
机构信息
Health Sciences and Biomedicine Pernambuco State University, Rheumatologist Oswaldo Cruz University Hospital of the State University of Pernambuco, Brazil.
出版信息
Eur Eat Disord Rev. 2010 Jan;18(1):58-66. doi: 10.1002/erv.969.
PURPOSE
The impact of weight on quality of life (IWQOL-Lite) is a self-administered instrument that assesses quality of life in obesity. It is composed of 31 items and five domains (physical function, self-esteem, sexual life, public distress, and work). The aim of the present study was to evaluate reliability (test-retest), internal structure, construct validity and discriminant validity.
METHODS
IWQOL-Lite scores were obtained from 89 people in a Weight Watchers institution (clinical sample) and 156 community volunteers (community sample). The participants were selected based on the same criteria: gender (female) and age (> 24 years), except for BMI. The community sample also completed the SF-36, a generic measure of health-related quality of life.
RESULTS
The Brazilian IWQOL-Lite demonstrated good test-retest reliability, internal consistency, discriminative validity and convergent validity.
CONCLUSIONS
The IWQOL-Lite is the first specific instrument validated in Brazil for assessing quality of life in obesity. The results reveal that IWQOL-Lite is an instrument with good psychometric properties. Nevertheless, in some cases results were dissimilar to those reported in earlier studies using the original American English.
目的
体重对生活质量的影响（IWQOL-Lite）是一种自我管理的工具，用于评估肥胖人群的生活质量。它由 31 个项目和五个领域（身体功能、自尊、性生活、公众困扰和工作）组成。本研究的目的是评估其可靠性（重测信度）、内部结构、构念效度和判别效度。
方法
IWQOL-Lite 评分来自 89 名 Weight Watchers 机构（临床样本）和 156 名社区志愿者（社区样本）。参与者是根据相同的标准选择的：性别（女性）和年龄（>24 岁），除了 BMI。社区样本还完成了 SF-36，这是一种衡量健康相关生活质量的通用工具。
结果
巴西版的 IWQOL-Lite 表现出良好的重测信度、内部一致性、判别效度和聚合效度。
结论
IWQOL-Lite 是巴西第一个经过验证的专门用于评估肥胖人群生活质量的工具。结果表明，IWQOL-Lite 是一种具有良好心理测量特性的工具。然而，在某些情况下，结果与使用原始美国英语的早期研究报告的结果不一致。
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