From: Sex-related change in BMI of 15- to 16-year-old Norwegian girls in cross-sectional studies in 2002 and 2017
Girls
Risk Difference, 95% CI
p-value
Boys
Risk difference, 95% CI
2002
2017
OWOBa %
9
14
5 (2,8)
0.002
17
20
3 (−1,6)
0.18
OBb %
1.8
2.5
0.7 (−0.7,2)
0.35
2.7
0.2 (−1,2)
0.73