GA

Boys

Girls

p

Average

SD

Average

SD

37.00

33.39

1.82

33.25

1.52

0.157

38.00

33.70

1.91

33.50

1.67

0.620

39.00

34.01

1.70

33.38

1.69

0.042

40.00

34.11

1.71

33.65

1.70

0.012

41.00

34.06

1.34

33.72

1.50

0.087

42.00

33.90

1.72

33.70

1.70

0.613

Total

33.90

1.72

33.60

1.65

<0.001