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Table 2 Descriptive characteristics of Chinese school-aged children and adolescents aged 7 to 19 years: PAFCTYS 2017

From: Physical activity, screen viewing time, and overweight/obesity among Chinese children and adolescents: an update from the 2017 physical activity and fitness in China—the youth study

Characteristic Unweighted Weighted
Age, mean, SD (y) 13.33 (2.63) 12.71 (2.49)
Ethnicity, percentage   
Han
Others
85.9
14.1
85.7
14.3
Height, mean (SD) (cm) 157.12 (12.43) 155.13 (12.44)
Weight, mean (SD) (kg) 50.15 (13.93) 48.21 (13.75)
BMI 19.97 (3.63) 19.68 (3.63)
MVPA, mean (SD) (min.) 45 (31.51) 47.38 (31.67)
Screen viewing time, mean SD (min.) 113.16 (93.52) 114.72 (93.47)
  1. PAFCTYS denotes Physical Activity and Fitness in China—The Youth Study. Percentage is weighed using PAFCTYS sampling weights to be representative of the Chinese grade school population in 2017 (unweighted sample size = 105,246; weighted sample size = 93,099,259)
  2. SD standard deviation
  3. BMI body mass index, calculated as body weight (kg) divided by height (m) squared (kg/m2)
  4. MVPA daily moderate-vigorous physical activity