Table 1

Obesity prevalence for all children 7–18 years of age by survey year

CategoryWHO definition, % (95% CI)IOTF definition, % (95% CI)
TotalBoysGirlsTotalBoysGirls
Urban areas
Obesity
 19850.16 (0.14 to 0.18)0.24 (0.21 to 0.27)0.08 (0.06 to 0.10)0.05 (0.04 to 0.05)0.05 (0.04 to 0.07)0.04 (0.02 to 0.05)
 19951.5 (1.5 to 1.6)2.3 (2.2 to 2.5)0.75 (0.67 to 0.82)0.68 (0.63 to 0.73)0.95 (0.87 to 1.03)0.41 (0.36 to 0.47)
 20003.3 (3.2 to 3.4)5.1 (4.9 to 5.3)1.5 (1.4 to 1.6)1.6 (1.5 to 1.6)2.4 (2.2 to 2.5)0.78 (0.71 to 0.86)
 20054.7 (4.6 to 4.8)7.3 (7.1 to 7.5)2.0 (1.9 to 2.1)2.3 (2.2 to 2.4)3.4 (3.3 to 3.6)1.2 (1.1 to 1.2)
 20105.6 (5.5 to 5.7)9.0 (8.7 to 9.2)2.2 (2.1 to 2.4)2.8 (2.6 to 2.9)4.3 (4.1 to 4.5)1.3 (1.2 to 1.3)
p Trend test*<0.001<0.001<0.001<0.001<0.001<0.001
Overweight+obesity
 19851.5 (1.4 to 1.5)1.6 (1.6 to 1.7)1.3 (1.2 to 1.4)0.88 (0.84 to 0.92)0.89 (0.83 to 0.95)0.86 (0.81 to 0.92)
 19957.6 (7.4 to 7.8)9.7 (9.4 to 10.0)5.5 (5.3 to 5.7)5.3 (5.2 to 5.5)6.6 (6.3 to 6.8)4.1 (3.9 to 4.3)
 200013.0 (12.8 to 13.2)17.2 (16.9 to 17.5)8.8 (8.6 to 9.1)9.6 (9.4 to 9.8)12.4 (12.1 to 12.6)6.8 (6.6 to 7.0)
 200516.5 (16.3 to 16.7)22.0 (21.7 to 22.3)11.0 (10.8 to 11.3)12.6 (12.4 to 12.8)16.6 (16.3 to 16.9)8.5 (8.3 to 8.8)
 201019.0 (18.8 to 19.3)25.2 (24.9 to 25.6)12.9 (12.6 to 13.2)14.5 (14.3 to 14.8)19.2 (18.9 to 19.5)9.9 (9.6 to 101)
p Trend test*<0.001<0.001<0.001<0.001<0.001<0.001
Rural areas
Obesity
 19850.04 (0.03 to 0.05)0.05 (0.04 to 0.06)0.02 (0.01 to 0.03)0.01 (0.01 to 0.02)0.01 (0.01 to 0.02)0.01 (0.01 to 0.02)
 19950.40 (0.36 to 0.44)0.58 (0.51 to 0.65)0.21 (0.17 to 0.25)0.18 (0.16 to 0.21)0.24 (0.20 to 0.28)0.13 (0.10 to 0.16)
 20001.1 (1.1 to 1.2)1.7 (1.5 to 1.8)0.57 (0.51 to 0.63)0.56 (0.51 to 0.60)0.76 (0.68 to 0.83)0.36 (0.31 to 0.41)
 20052.0 (1.9 to 2.0)3.0 (2.8 to 3.1)0.95 (0.87 to 1.03)0.89 (0.84 to 0.95)1.2 (1.1 to 1.3)0.55 (0.49 to 0.61)
 20103.1 (3.0 to 3.2)4.8 (4.6 to 5.0)1.4 (1.3 to 1.5)1.5 (1.4 to 1.6)2.2 (2.1 to 2.4)0.80 (0.72 to 0.87)
p Trend test*<0.001<0.001<0.001<0.001<0.001<0.001
Overweight+obesity
 19850.75 (0.71 to 0.79)0.53 (0.48 to 0.57)0.98 (0.92 to 1.04)0.46 (0.43 to 0.49)0.25 (0.22 to 0.28)0.68 (0.63 to 0.73)
 19952.8 (2.7 to 2.9)3.0 (2.8 to 3.1)2.5 (2.4 to 2.7)1.8 (1.7 to 1.9)1.9 (1.8 to 2.0)1.7 (1.6 to 1.9)
 20005.3 (5.2 to 5.4)6.4 (6.2 to 6.6)4.2 (4.0 to 4.3)3.7 (3.6 to 3.8)4.3 (4.1 to 4.5)3.1 (2.9 to 3.2)
 20058.1 (8.0 to 8.3)10.2 (9.9 to 10.4)6.1 (5.9 to 6.3)5.8 (5.7 to 5.9)7.0 (6.8 to 7.2)4.5 (4.4 to 4.7)
 201011.8 (11.6 to 12.0)15.2 (14.9 to 15.5)8.5 (8.3 to 8.7)8.7 (8.6 to 8.9)10.9 (10.8 to 11.2)6.5 (6.3 to 6.7)
p Trend test*<0.001<0.001<0.001<0.001<0.001<0.001
All
Obesity
 19850.10 (0.10 to 0.11)0.14 (0.13 to 0.16)0.05 (0.04 to 0.06)0.03 (0.02 to 0.03)0.03 (0.03 to 0.04)0.03 (0.02 to 0.03)
 19950.98 (0.93 to 1.02)1.5 (1.4 to 1.5)0.48 (0.44 to 0.53)0.44 (0.41 to 0.46)0.60 (0.55 to 0.64)0.27 (0.24 to 0.31)
 20002.2 (2.1 to 2.3)3.4 (3.3 to 3.5)1.0 (1.0 to 1.1)1.1 (1.0 to 1.1)1.6 (1.6 to 1.6)0.57 (0.53 to 0.62)
 20053.3 (3.2 to 3.4)5.2 (5.0 to 5.3)1.5 (1.4 to 1.6)1.6 (1.6 to 1.7)2.3 (2.3 to 2.4)0.85 (0.80 to 0.91)
 20104.3 (4.3 to 4.4)6.9 (6.7 to 7.0)1.8 (1.8 to 1.9)2.2 (2.1 to 2.2)3.3 (3.2 to 3.4)1.0 (1.0 to 1.1)
p Trend test*<0.001<0.001<0.001<0.001<0.001<0.001
Overweight+obesity
 19851.1 (1.1 to 1.1)1.1 (1.0 to 1.1)1.1 (1.1 to 1.2)0.67 (0.64 to 0.69)0.57 (0.54 to 0.60)0.77 (0.73 to 0.81)
 19955.2 (5.1 to 5.3)6.3 (6.2 to 6.5)4.0 (3.9 to 4.2)3.6 (3.5 to 3.7)4.2 (4.1 to 4.4)2.9 (2.8 to 3.0)
 20009.2 (9.1 to 9.3)11.8 (11.7 to 12.0)6.5 (6.4 to 6.7)6.7 (6.5 to 6.8)8.4 (8.2 to 8.5)4.9 (4.8 to 5.1)
 200512.4 (12.2 to 12.5)16.1 (15.9 to 16.3)8.6 (8.4 to 8.7)9.2 (9.1 to 9.3)11.8 (11.7 to 12.0)6.5 (6.4 to 6.7)
 201015.4 (15.3 to 15.6)20.2 (20.0 to 20.4)10.7 (10.5 to 10.9)11.6 (11.5 to 11.8)15.1 (14.9 to 15.3)8.2 (8.0 to 8.4)
p Trend test*<0.001<0.001<0.001<0.001<0.001<0.001

  • *p Value represent test of linear trends across year.