Sex	n	Retention Index	Avg Change (Post→Tracer)	Retained/Improved (%)	Moderate Decline (10–20%) (%)	Big Decline (>20%) (%)
Female	21	85.6%	-13.3%	23.8%	9.5%	33.3%
Male	18	100.6%	-1.4%	55.6%	11.1%	22.2%
Overall	39	92.6%	-7.8%	38.5%	10.3%	28.2%