Table 3.

Multi-level regression analyses for the change in performance across years for women and men (Model 1) with correction for multiple finishes (Model 2)

Model	β	SE ( β )	Stand. β	T	p
Change in swimming speed for the fastest women per event
1	-0.001	0.001	-0.100	-0.674	0.504
2	-0.001	0.001	-0.100	-0.674	0.504
Change in swimming speed for the fastest men per event
1	-0.001	0.001	-0.106	-0.713	0.479
2	-0.001	0.001	-0.106	-0.713	0.479
Change in sex difference in swimming performance for the fastest swimmers per event
1	0.005	0.022	0.034	0.225	0.823
2	0.005	0.022	0.034	0.225	0.823
Change in swimming speed for the ten fastest women per event
1	0.000	0.000	-0.079	-1.706	0.089
2	0.000	0.000	-0.079	-1.706	0.089
Change in swimming speed for the ten fastest men per event
1	-0.001	0.000	-0.096	-2.079	0.038
2	-0.001	0.000	-0.096	-2.079	0.038
Change in sex difference for the ten fastest swimmers per event
1	0.001	0.008	0.008	0.179	0.858
2	0.001	0.008	0.008	0.179	0.858