I did a propensity score matching separately for 3 different outcome measures using the same matching process (1:1 Caliper 0.4 common)

psmatch2 $treatment $dlist, outcome($ylist) caliper (0.4) ate logit common

First outcome: hospital admission within 30 days
Second outcome: mortality in 1 year
Third outcome: duration for hospital stay for the admission in 30 days.

The sample size I obtained for the first outcome was 38 vs. 58 for the second outcome measure.

Is it correct to obtain different sample size for different outcomes?

Please help