Table 4 T tests for difference in the averages—quantitative values for group n2 (13 to 18 years of age)

OB

167

46

42

42

45

NB

186

49

46

45

45

Means OB

14.83

47.39

45.55

34.61

27.3

Means NB

15.25

47.02

46.1

34.5

27.81

SD OB

1.76

3.2

3.57

3.22

2.8

SD NB

1.7

3.32

4.22

3.16

2.9

OB*

0.14

0.47

0.55

0.5

0.31

NB*

0.12

0.47

0.62

0.47

0.43

Dif of means

−0.426341

0.370896

−0.550207

0.111905

−0.777778

CI

95 %

95 %

95 %

95 %

95 %

IC

(−0.789891; −0.062791)

(−0.958786; 1.700578)

(−2.203110; 1.102696)

(−1.250651; 1.474461)

(−1.837129; 0.281573)

T value

−2.31

0.55

−0.66

0.16

1.46

p value

0.022*

0.581

0.51

0.871

0.148

DF

343

92

85

84

79