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Table 2 Daily time spent in moderate to vigorous physical activity among junior high school students of Ho Chi Minh City in 2007

From: Association between physical activity and metabolic syndrome: a cross sectional survey in adolescents in Ho Chi Minh City, Vietnam

  Median
(minutes per day)
Inter-quartile range
(25%, 75%)
p-values*
Total 52.0 32.4, 78.8  
Gender    < 0.001
Male 58.3 37.9, 84.9  
Female 47.0 31.6, 69.2  
Age group    0.500
12-13 51.3 32.0, 75,8  
14-15 53.8 34.2, 83.2  
Overweight/obese**    0.003
yes 35.2 26.0, 66.7  
no 54.2 35.5, 81.2  
Metabolic syndrome    
Yes 38.8 25.6, 46.9 0.001
No 53.7 33.2, 79.8  
  1. * p-values of Mann-Whitney rank sum test to compare median of 2 groups.
  2. ** Combined overweight and obese using IOTF cut-off values