Table 3 Differences between prosocial behaviour and substance use (girls n = 377; boys n = 366)

Tobacco

Consumer

Mean

56.28

46.94

32.45

20.17

SD

9.53

6.62

4.34

4.73

Non-consumer

Mean

55.82

49.60

32.90

20.71

SD

9.69

6.49

4.77

4.44

t

0.56

-4.87***

-1.13

-1.42

p

0.571

< 0.001

0.255

0.155

d

-

0.36

-

-

Alcohol

Consumer

Mean

55.76

47.83

32.82

20.57

SD

9.49

6.37

4.36

4.51

Non-consumer

Mean

55.90

50.43

32.60

20.55

SD

9.92

6.67

5.08

4.47

t

-0.18

-5.21***

0.59

0.05

p

0.853

< 0.001

0.552

0.958

d

-

0.38

-

-