**Objectives:** To design a frailty index (FI) and evaluate three methods to handle missing data. Furthermore, we evaluated its construct (i.e., skewed distribution, correlation with age and sub-maximum score) and criterion validity (based on …
**Objectives:** To develop a healthy aging score (HAS), to assess age and sex differences in HAS, and to evaluate the association of the HAS with survival.
**Design:** Prospective population-based cohort.
**Setting:** Inhabitants of Ommoord, …
**Objective:** To characterize the relation between established and previously unexplored characteristics of the fertile life with all-cause and cause-specific mortality.
**Design:** Prospective cohort study.
**Patient(s):** A total of 4,076 …