Table 3.

Cox regression analysis for mortality at 12 months

Variables with a p-value <.20 in the univariate analysis and with <20% missing data were included in the multivariate analysis; these variables are marked in bold in the p-value column. Age, sex, and comorbidity were also included as potential confounders. A backward selection procedure was applied; a forward analysis selected the same variables.

Abbreviations: ADL, activities of daily living; IADL, instrumental activities of daily living.