VES-13 and WHOQOL-bref cutoff points to detect quality of life in older adults in primary health care

ABSTRACT OBJECTIVE: To determine Vulnerable Elders Survey (VES-13) and WHOQOL-bref cutoff points to detect poor quality of life (QoL) in older individuals. METHODS: This is a cross-sectional study, performed in all primary health care units in Samambaia, DF, Brazil. The data were collected from August 2016 to May 2017. The sample size of 466 older individuals treated in primary health care was obtained considering a 5% margin of error, 95% confidence level, 50% prevalence, and 20% possible losses, in a population of 13,259 older individuals. The subjects answered the VES-13 and WHOQOL-bref questionnaires. They were divided into 3 subgroups: poorQoL (older individuals with self-reported very poor or poor QoL AND very dissatisfied or dissatisfied with their health), goodQoL (very good or good QoL AND very satisfied or satisfied with Health) and indeterminateQoL (NOT belonging to poorQoL or goodQoL subgroups). A receiver-operating characteristic (ROC) curve was performed with poorQoL (case) versus goodQoL (control) to determine the cutoff score in VES-13 and WHOQOL-bref. A diagnostic test using these cutoffs was carried out in all older individuals (n = 466). RESULTS: The VES-13 and WHOQOL-bref cutoff points to detect poorQoL were ≥ 2 and

摘要 研究目的：确定用于筛查老年人群低生活质量（Quality of Life, QoL）的脆弱老年人量表（Vulnerable Elders Survey, VES-13）与世界卫生组织生活质量量表简版（WHOQOL-bref）的截断值。研究方法：本研究为横断面研究，于巴西联邦区萨姆巴亚地区所有基层医疗单位开展，数据采集时间为2016年8月至2017年5月。基于该地区13259名老年人群的总体规模，按5%的误差边际、95%置信水平、50%患病率及20%潜在失访率，最终纳入466名在基层医疗就诊的老年人作为研究样本。所有受试者完成VES-13与WHOQOL-bref问卷，并被划分为3个亚组：低生活质量组（poorQoL，自我报告生活质量极差或较差且对自身健康非常不满意或不满意的老年人）、良好生活质量组（goodQoL，自我报告生活质量极好或良好且对自身健康非常满意或满意的老年人）及不确定生活质量组（indeterminateQoL，不属于前两个亚组的人群）。以低生活质量组为病例组、良好生活质量组为对照组，绘制受试者工作特征（receiver-operating characteristic, ROC）曲线以确定VES-13与WHOQOL-bref的截断得分。随后针对全部466名老年受试者，采用上述截断值开展诊断试验。研究结果：用于筛查低生活质量的VES-13与WHOQOL-bref截断值分别为≥2分和