Among nonagenarians, congruence between self-rated and proxy-rated health was low but both predicted mortality

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• 作者：Merja Vuorisalmi^a ; ^b ; ^{merja.vuorisalmi@uta.fi} ; Tytti Sarkeala^a ; ^c ; Antti Hervonen^a ; Marja Jylh&auml ; ^a
• 关键词：Nonagenarians ; Self-rated health ; Proxy-rated health ; Agreement ; Mortality ; Population studies
• 刊名：Journal of Clinical Epidemiology
• 出版年：2012
• 期刊代码：148_08954356
• 类别：med
• 出版时间：May, 2012
• 卷：65
• 期：5
• 页码：553-559
• 文件大小：119 K

摘要

Objective

The congruence between self-rated global health (SRH) and proxy-rated global health (PRH), the factors associated with congruence between SRH and PRH, and their associations with mortality are examined using data from the Vitality 90+ study.

Study Design and Setting

The data consist of 213 pairs of subjects鈥攁ged 90 years and older鈥攁nd proxies. The relationship between SRH and PRH was analyzed by chi-square test and Cohen鈥檚 kappa. Logistic regression analysis was used to find out the factors that are associated with the congruence between health ratings. The association between SRH and PRH with mortality was studied using Cox proportional hazard models.

Results

The subjects rated their health more negatively than the proxies. Kappa value indicated only slight congruence between SRH and PRH, and they also predicted mortality differently. Good self-reported functional ability was associated with congruence between SRH and PRH.

Conclusions

The results imply that the evaluation processes of SRH and PRH differ, and the measures are not directly interchangeable. Both measures are useful health indicators in very old age but SRH cannot be replaced by PRH in analyses.