Table 1 Demographic characteristics of the sample.

From: Association between physical activity and academic achievement in adolescents mediated by self-concept and physical and mental health

Demographic characteristics

Category

Frequency

Percentage

Gender

Male

275

60%

Female

183

40%

Age

Below 13

10

2.2%

13–16 years

231

50.4%

16–18 years

168

36.7%

Above 18

49

10.7%

Junior high

Grade 1

17

3.7%

Grade 2

131

28.6%

Grade 3

109

23.8%

Senior high

Grade 1

79

17.3%

Grade 2

78

17.0%

Grade 3

44

9.6%