Department of Social Medicine, School of Public Health, Guangxi Medical University, Nanning, China.
Department of Social Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China.
Geriatr Gerontol Int. 2019 Jun;19(6):547-551. doi: 10.1111/ggi.13658. Epub 2019 Apr 8.
The present study aimed to evaluate the validity of proxy informants' reports on Life Event Scale for the Elderly (LESE) by using psychological autopsy method among rural older adults in China.
A multistage stratified cluster sampling method was used to select research sites. Using a case-control psychological autopsy study, face-to-face interviews were carried out to collect information from 242 suicide cases and 242 living controls. We compared the intensity and number of life events to assess the validity and reliability of LESE with proxy data reported by different informants. Data from proxy respondents of the living controls were compared with data reported by the targets (gold standards). Intraclass correlation coefficients were computed to evaluate the consistency of informants. Spearman's correlation analysis was used to analyze the convergent validity and discriminate validity of the LESE.
The number of life events between different informants showed higher intraclass correlation coefficients values than the intensity of life events, but the results of correlation analysis was similar. The LESE was positively correlated with depression, loneliness and hopelessness, and negatively correlated with quality of life, family function and social support both in suicide cases and living controls.
The LESE has good convergent validity and discriminant validity. LESE is a valid instrument for measuring life events in psychological autopsy studies. We suggest using the number of life events to assess the validity and reliability with proxy data in a psychological autopsy study, which is more reliable than using the intensity of life events. Geriatr Gerontol Int 2019; 19: 547-551.
本研究旨在通过中国农村老年人的心理解剖方法，评估生活事件量表（LESE）在代报告中的有效性。
采用多阶段分层聚类抽样方法选择研究地点。采用病例对照心理解剖研究，对 242 例自杀病例和 242 例存活对照进行面对面访谈，比较生活事件的强度和数量，以评估 LESE 与不同代报告者的代报告数据的有效性和可靠性。将存活对照的代报告者的数据与目标（金标准）报告的数据进行比较。计算组内相关系数以评估信息提供者的一致性。采用 Spearman 相关分析评估 LESE 的收敛有效性和区分有效性。
不同信息提供者之间的生活事件数量显示出更高的组内相关系数值，而生活事件的强度则显示出相似的结果。LESE 与自杀病例和存活对照中的抑郁、孤独和绝望呈正相关，与生活质量、家庭功能和社会支持呈负相关。
LESE 具有良好的收敛有效性和区分有效性。LESE 是心理解剖研究中测量生活事件的有效工具。我们建议在心理解剖研究中使用生活事件的数量来评估代报告数据的有效性和可靠性，这比使用生活事件的强度更可靠。
