Health Economics Group, Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK.
Health Economics Group, Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK.
Value Health. 2019 Mar;22(3):348-354. doi: 10.1016/j.jval.2018.10.001.
To examine the concurrent validity of the Weight-specific Adolescent Instrument for Economic evaluation (WAItE) as compared with the generic, preference-based Child Health Utility 9D (CHU-9D) and the weight-specific Youth Quality of Life-Weight (YQOL-W) and also to examine the test-retest reliability of the WAItE.
An online survey was used to administer the 3 instruments on a sample of adolescents (aged 11-18 years). Individual responses were converted into either utility scores (CHU-9D) or health-related quality-of-life scores (WAItE and YQOL-W). A 10% subsample of the respondents also completed the WAItE 1 week after completion to assess test-retest reliability.
One thousand adolescents completed the online survey. There was a strong correlation between the WAItE and both the CHU-9D (0.731; P<.001) and the YQOL-W (0.747; P<.001). All 3 instruments were able to discriminate according to different weight status categories and a measure of self-assessed health. Unlike the CHU-9D or the YQOL-W, the WAItE did not show a substantial ceiling effect. The WAItE also showed acceptable levels of test-retest reliability.
The study results are encouraging, and illustrate that the WAItE can be used to reliably and accurately measure weight-specific outcomes in the younger population. The WAItE can also be used to assess outcomes in cost-effectiveness analysis of weight management interventions for young people, given the instrument is less likely to display ceiling effects and may thus be more sensitive in measuring change that results from interventions developed for this population.
将 Weight-specific Adolescent Instrument for Economic evaluation（WAItE）与通用的偏好为基础的 Child Health Utility 9D（CHU-9D）和特定于体重的 Youth Quality of Life-Weight（YQOL-W）进行比较，以检验其同时效度，同时检验 WAItE 的重测信度。
使用在线调查对青少年（年龄在 11-18 岁之间）样本进行了 3 种工具的调查。个人的反应被转换为效用评分（CHU-9D）或健康相关的生活质量评分（WAItE 和 YQOL-W）。对受访者的 10%的样本进行了 WAItE 测试，一周后完成以评估重测信度。
1000 名青少年完成了在线调查。WAItE 与 CHU-9D（0.731；P<.001）和 YQOL-W（0.747；P<.001）之间存在很强的相关性。所有 3 种工具都能够根据不同的体重状况类别和自我评估的健康状况进行区分。与 CHU-9D 或 YQOL-W 不同，WAItE 没有显示出明显的天花板效应。WAItE 也显示出了可接受的重测信度。
研究结果令人鼓舞，表明 WAItE 可以用于可靠和准确地测量青少年人群中的特定于体重的结果。由于该工具不太可能显示天花板效应，因此可能更敏感地测量针对该人群开发的干预措施所产生的变化，因此，WAItE 也可用于评估青少年体重管理干预措施的成本效益分析中的结果。
