highly significantP < .001
Among survivors aged 60 years or older, survival declined stepwise from robust to pre-frail to frail, with highly significant between-group differences (log-rank P < .001; Fig. 3 B).
Among survivors aged 60 years or older, survival declined stepwise from robust to pre-frail to frail, with highly significant between-group differences (log-rank P < .001; Fig. 3 B).