Performance of two self-report measures for evaluating obesity and weight loss
Performance of two self-report measures for evaluating obesity and weight loss
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DOI：
10.1038/oby.2004.8
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发表时间：
2004-01-01
期刊：
影响因子：
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通讯作者：
Rothman, M
中科院分区：
文献类型：
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作者：
Patrick, DL;Bushnell, DM;Rothman, M
目的：为了评估性能的肥胖和减肥生活质量（OWLQOL）和体重相关症状（WRSM）measurements.Research Methods and Procedures：四项研究肥胖的人18至75岁的年龄进行了分析：一个12周的初步验证研究，一个临床试验使用盲终点数据在50至83周，在美国和欧洲进行的社区研究。五十六初步验证研究的受试者访问I周后，筛选reproducibility.Results：总体而言，6107肥胖的人完成了一个评估，291完成了后续在12周，642在>50周。心理测量学分析得出了一个17项的OWLQOL，在五个样本上测试了一个单一的分数，该分数具有内部一致性（a值> 0.90）和可重复性（组内相关系数> 0.95）。正如预期的那样，OWLQOL评分（越高越好）与症状测量（越低越好，-0.54）、一般生活质量测量（0.53）、身体功能测量（0.40）和心理功能测量（0.47）相关。20项WRSM具有内部一致性（α = 0.87）和重现性（组内相关系数= 0.83）。OWLQOL区分性别（p < 0.001）、残疾天数（p < 0.05）、BMI水平（p < 0.05）和症状困扰水平（p < 0.001）。第12周时的评估得出，体重减轻大于或等于2.5%的OWLQOL效应量为0.77，WRSM效应量为-0.54。在大于或等于50周的大于或等于10%的体重变化，效果大小分别为1.63和-0.73，respectively.Discussion：OWLQOL和WRSM是简短，有效，可重复，和响应自我报告的结果，用于评估肥胖和体重减轻。
Objectives: To evaluate performance of the Obesity and Weight-Loss Quality-of-Life (OWLQOL) and Weight-Related Symptoms (WRSM) measures.Research Methods and Procedures: Four studies of obese persons 18 to 75 years of age were analyzed: a 12-week initial validation study, a clinical trial using blinded end-point data at 50 to 83 weeks, and community studies conducted in the U.S. and Europe. Fifty-six initial validation study subjects visited I week after screening to evaluate reproducibility.Results: Overall, 6107 obese persons completed one assessment, 291 completed follow-up at 12 weeks, and 642 at >50 weeks. Psychometric analyses resulted in a 17-item OWLQOL with a single score tested on five samples that was internally consistent (a values > 0.90) and reproducible (intraclass correlation coefficient > 0.95). The OWLQOL score (higher is better) was associated, as expected, with the symptom measure (lower is better, -0.54), generic quality of life measure (0.53), and measures of physical (0.40) and mental functioning (0.47). The 20-item WRSM was internally consistent (alpha = 0.87) and reproducible (intraclass correlation coefficient = 0.83). The OWLQOL discriminated between genders (p < 0.001), presence of disability days (p < 0.05), levels of BMI (p < 0.05), and levels of symptom bothersomeness (p < 0.001). Evaluation at 12 weeks yielded an effect size for greater than or equal to 2.5% weight loss of 0.77 for the OWLQOL and -0.54 for the WRSM. At greater than or equal to 50 weeks for greater than or equal to 10% weight change, effect sizes were 1.63 and -0.73, respectively.Discussion: The OWLQOL and WRSM are brief, valid, reproducible, and responsive self-reported outcomes for evaluating obesity and weight loss.