Andresen E M, Catlin T K, Wyrwich K W, Jackson-Thompson J
Saint Louis University School of Public Health, Department of Community Health, Salus Center, St Louis, MO 63104-1399, USA.
J Epidemiol Community Health. 2003 May;57(5):339-43. doi: 10.1136/jech.57.5.339.
Health related quality of life (HRQoL) is an important surveillance measure for monitoring the health of populations, as proposed in the American public health plan, Healthy People 2010. The authors investigated the retest reliability of four HRQoL questions from the US Behavioral Risk Factor Surveillance System (BRFSS).
Randomly sampled BRFSS respondents from the state of Missouri were re-contacted for a retest of the HRQoL questions. Reliability was estimated by kappa statistics for categorical questions and intraclass correlation coefficients for continuous questions.
Missouri, United States.
868 respondents were re-interviewed by telephone about two weeks after the initial interview (mean 13.5 days). Participants represented the adult, non-institutionalised population of Missouri: 59.1% women; mean age 49.5 years; 93.2% white race.
Retest reliability was excellent (0.75 or higher) for Self-Reported Health and Healthy Days measures, and moderate (0.58 to 0.71) for other measures. Reliability was lower for older adults. Other demographic subgroups (for example, gender) showed no regular pattern of differing reliability and there was very little change in reliability by the time interval between the first and second interview.
Retest reliability of the HRQoL Core is moderate to excellent. Scaling options will require future attention, as will research into appropriate metrics for what constitutes important population group differences and change in HRQoL.
如美国公共卫生计划《健康人民2010》中所提议的，健康相关生活质量（HRQoL）是监测人群健康的一项重要监测指标。作者调查了美国行为风险因素监测系统（BRFSS）中四个HRQoL问题的重测信度。
对来自密苏里州的BRFSS受访者进行随机抽样，再次联系他们以重测HRQoL问题。通过分类问题的kappa统计量和连续问题的组内相关系数来估计信度。
美国密苏里州。
在初次访谈约两周后（平均13.5天），通过电话对868名受访者进行了再次访谈。参与者代表密苏里州的成年非机构化人群：59.1%为女性；平均年龄49.5岁；93.2%为白人。
自我报告健康和健康天数测量的重测信度极佳（0.75或更高），其他测量的重测信度中等（0.58至0.71）。老年人的信度较低。其他人口亚组（如性别）未显示出信度差异的规律模式，且首次和第二次访谈之间的时间间隔对信度的影响很小。
HRQoL核心指标的重测信度中等至极佳。未来需要关注量表选择，以及对构成重要人群组差异和HRQoL变化的适当指标的研究。
