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Table 7 Multi-level regression analysis for changes in sex difference in swimming speed for finalists in the FINA World Championships in freestyle, breaststroke, backstroke, butterfly and individual medley with correction for multiple participations

From: Changes in sex difference in swimming speed in finalists at FINA World Championships and the Olympic Games from 1992 to 2013

  β SE ( β) Stand. β T p
50 m freestyle 0.005 0.048 0.056 0.112 0.916
100 m freestyle 0.016 0.020 0.362 0.777 0.481
200 m freestyle 0.023 0.063 0.181 0.367 0.732
400 m freestyle 0.007 0.052 0.071 0.142 0.894
800 m freestyle −0.090 0.045 −0.705 −1.988 0.118
100 m breaststroke −0.051 0.015 −0.375 −3.384 0.001
200 m breaststroke 0.025 0.014 0.209 1.785 0.079
100 m backstroke 0.029 0.012 0.271 2.356 0.021
200 m backstroke 0.006 0.014 0.055 0.460 0.647
100 m butterfly −0.003 0.021 −0.025 −0.168 0.867
200 m butterfly 0.028 0.012 0.325 2.333 0.024
200 m individual medley 0.035 0.018 0.230 1.978 0.052
400 m individual medley −0.033 0.017 −0.221 −1.884 0.064