He Huiming, Mo Qiqing, Bai Xinyu, Chen Xinguang, Jia Cunxian, Zhou Liang, Ma Zhenyu
School of Public Health, Guangxi Medical University, Nanning, Guangxi, China.
Institute of Parasitic Disease Control and Prevention, Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention, Nanning, Guangxi, China.
PeerJ. 2021 Nov 9;9:e12396. doi: 10.7717/peerj.12396. eCollection 2021.
To evaluate the reliability and validity of the short version six-item Quality of Life Scale (QOLS-6) and the consistency of subject-proxy data in a case-control psychological autopsy study on elderly suicide in rural China.
A two-stage stratified cluster sampling method was used to select research sites. We used self-administered questionnaires to collect proxy-based information from informants and subject-based information from living comparisons.
A total of 242 pairs of suicide cases and living comparisons were selected in our research. Subject-proxy consistency for QOLS-6 was good (Intraclass correlation coefficient (ICC) was 0.688) in living controls. Good internal consistency of QOLS-6 was validated by Cronbach's α being greater than 0.6 among suicide cases and living comparisons. The mean scores of quality of life were lower among suicide cases than living controls. Quality of life was negatively correlated with depression, loneliness, hopelessness, impulsiveness and stressful life events, while it was positively correlated with activities of daily living and family function.
QOLS-6 has good reliability and validity, which can be used for assessing quality of life among Chinese rural older adults. It is shorter and easier than any other scale for measuring quality of life and can be used as a screening tool in future studies.
在中国农村老年人自杀的病例对照心理解剖研究中，评估简版六项生活质量量表（QOLS-6）的信度和效度以及研究对象与代理人数据的一致性。
采用两阶段分层整群抽样方法选择研究地点。我们使用自填式问卷从信息提供者处收集基于代理人的信息，并从在世对照者处收集基于研究对象的信息。
我们的研究共选取了242对自杀病例和在世对照者。在在世对照者中，QOLS-6的研究对象与代理人一致性良好（组内相关系数（ICC）为0.688）。自杀病例和在世对照者中，Cronbach's α大于0.6验证了QOLS-6具有良好的内部一致性。自杀病例的生活质量平均得分低于在世对照者。生活质量与抑郁、孤独、绝望、冲动性和应激性生活事件呈负相关，而与日常生活活动和家庭功能呈正相关。
QOLS-6具有良好的信度和效度，可用于评估中国农村老年人的生活质量。它比其他任何生活质量测量量表都更简短、更容易，可作为未来研究的筛查工具。
