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Table 4 Age-sex-specific body mass index (BMI) percentiles for Hong Kong in 1993 and 2005/6 and for mainland China in 2005 for children and adolescents aged 7 to 18 y [14]

From: Secular changes in height, weight and body mass index in Hong Kong Children

Age (years) Hong Kong 1963 Hong Kong 1993 Hong Kong 2005/6 China 2005
  P85 P95 P85 P95 P85 P95 P85 P95
Boys         
7 15.1 16.1 17.9 19.6 18.8 21.4 17.0 19.6
8 15.5 16.7 18.4 20.3 19.4 22.2 17.7 20.4
9 15.5 16.6 19.1 21.2 20.1 23.1 18.4 21.3
10 15.9 17.1 19.7 22.2 20.9 24.1 19.4 22.2
11 16.6 18.1 20.3 23.0 21.6 25.0 20.1 23.0
12 17.2 18.9 20.8 23.7 22.3 25.7 21.0 23.9
13 18.0 19.8 21.3 24.4 22.7 26.2 21.9 25.0
14 18.5 20.2 21.9 25.1 23.1 26.6 22.8 25.9
15 19.2 20.9 22.3 25.6 23.5 26.9 23.5 26.8
16 19.9 21.7 22.8 26.1 23.7 27.2 24.2 27.7
17 20.3 22.1 23.2 26.4 23.9 27.3 25.0 28.5
18 20.5 22.2 23.4 26.6 24.1 27.3 24.8 28.2
Girls         
7 14.9 15.9 17.2 19.1 17.7 19.8 16.4 18.3
8 15.1 16.2 17.6 19.6 18.3 20.6 17.0 19.0
9 15.5 16.7 18.0 20.3 18.9 21.4 17.7 19.8
10 15.9 17.2 18.7 21.2 19.6 22.2 18.4 20.7
11 16.6 18.1 19.5 22.3 20.3 23.1 19.1 21.8
12 17.5 19.3 20.4 23.4 21.1 24.0 20.0 22.7
13 18.5 20.4 21.3 24.3 21.9 24.9 20.9 23.5
14 19.5 21.5 22.1 24.8 22.5 25.5 21.9 24.4
15 20.0 21.9 22.5 25.1 22.9 25.8 22.9 25.3
16 20.4 22.3 22.7 25.1 23.1 26.0 23.9 26.2
17 20.5 22.3 22.8 25.2 23.2 26.0 24.4 27.0
18 20.8 22.7 23.0 25.2 23.2 25.9 24.2 28.0
  1. P85: 85th percentile, overweight
  2. P95: 95th percentile, obesity