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Table 1 Sample Characteristics

From: Are computer and cell phone use associated with body mass index and overweight? A population study among twin adolescents

 

Boys

Girls

Boys and girls

N

1981

2117

4098

mean age, SD

17.6 (0.24)

17.6 (0.27)

17.6 (0.26)

mean BMI, SD

21.8 (3.0)

21.0 (3.0)

21.4 (3.0)

prevalence of overweight and obesity (%)

11.9

7.9

9.8

prevalence of overweight (%)

9.4

6.6

8.0

prevalence of obesity (%)

2.4

1.3

1.9