Centre for Primary Care and Public Health (Unisanté), University of Lausanne, Route de la Corniche 10, 1010, Lausanne, Switzerland.
Service of Geriatric Medicine and Geriatric Rehabilitation, University of Lausanne Hospital Centre, Lausanne, Switzerland.
Health Qual Life Outcomes. 2020 Oct 14;18(1):340. doi: 10.1186/s12955-020-01589-5.
The Older people Quality of Life-7 domains (OQoL-7) is a 28-item multidimensional questionnaire developed to measure community-dwelling older people's QoL. The OQoL-7 assesses both importance of and satisfaction in seven QoL domains (Material resources; Close entourage; Social and cultural life; Esteem and recognition; Health and mobility; Feeling of safety; and Autonomy). This study aimed to investigate concurrent and construct validity of the OQoL-7. A secondary aim was to compare different methods of weighting participants' ratings of satisfaction according to their individual ratings of importance, as compared to the OQoL-7 total score (unweighted).
Data came from the first and second samples of the Lausanne cohort 65+ study, assessed at the same age of 72-77 years in 2011 (N = 1117) and 2016 (N = 1091), respectively. To assess concurrent validity, the OQoL-7 was compared to other measures of the same concept (single QoL item) or related concepts (self-rated health, SF-12). Construct validity was tested by comparing subscores in the seven QoL domains in the presence and absence of two stressful events during the preceding year (financial difficulties and relationship difficulties). The effect of importance weighting was assessed using moderated regression analysis.
The OQoL-7 total score was significantly associated with the single QoL item (Spearman's rho 0.46), self-rated health (Spearman's rho 0.34), SF-12 physical (Spearman's rho 0.22) and mental (Spearman's rho 0.28) component scores. Large differences (Cohen's d > 0.8) were observed in the presence or absence of stressful events in the expected QoL domains: "Material resources" in the presence or absence of "Financial difficulties" (Cohen's d 1.34), and "Close entourage" in the presence or absence of "Relationship difficulties" (Cohen's d 0.84). Importance weighting resulted in a very small improvement in the prediction of the single QoL item (ΔR 0.018). All results were highly consistent across 2011 and 2016 samples.
The OQoL-7 showed adequate concurrent and construct validity in two samples of older people. In future studies, the decision to use weighted or unweighted scores will depend on the priority given to either optimizing the prediction of QoL or limiting the burden on respondents and the amount of missing data.
老年人生活质量-7 领域量表（OQoL-7）是一种 28 项多维问卷，旨在测量社区居住的老年人的生活质量。OQoL-7 评估了七个生活质量领域（物质资源；亲密伙伴；社会文化生活；尊重和认可；健康和活动能力；安全感；和自主）的重要性和满意度。本研究旨在调查 OQoL-7 的同时效度和结构效度。次要目的是比较根据个人对重要性的评价对参与者满意度评分进行加权的不同方法，与 OQoL-7 总分（未加权）相比。
数据来自洛桑队列 65+研究的第一和第二样本，分别于 2011 年（N=1117）和 2016 年（N=1091）在 72-77 岁时进行评估。为了评估同时效度，将 OQoL-7 与同一概念（单一生活质量项目）或相关概念（自我评估健康、SF-12）的其他测量方法进行了比较。通过比较前一年存在和不存在两个压力事件（经济困难和关系困难）时七个生活质量领域的子分数来检验结构效度。使用 moderated regression analysis 评估重要性加权的效果。
OQoL-7 总分与单一生活质量项目（Spearman's rho 0.46）、自我评估健康（Spearman's rho 0.34）、SF-12 身体（Spearman's rho 0.22）和心理（Spearman's rho 0.28）分量表显著相关。在存在或不存在压力事件的情况下，预计会在生活质量领域中出现较大差异（Cohen's d > 0.8）：“物质资源”在存在或不存在“财务困难”的情况下（Cohen's d 1.34），以及“亲密伙伴”在存在或不存在“关系困难”的情况下（Cohen's d 0.84）。重要性加权仅略微改善了对单一生活质量项目的预测（ΔR 0.018）。所有结果在 2011 年和 2016 年样本中均高度一致。
OQoL-7 在两个老年人样本中表现出足够的同时效度和结构效度。在未来的研究中，使用加权或未加权评分的决定将取决于对优化生活质量预测或限制受访者负担和缺失数据量的重视程度。
