Each line of the file (MARK compatible) represents an individual. The first seventy-four columns indicate the captures/recaptures and the status (alive or death), Mark LD. The first 74 columns corresp
aCox-proportional hazard model: stratified by age group (18–64, 65 and above), year of admission (1996 to 2005), gender (female, male), primary diagnosis at admission (stroke, fracture, amputation, lo
