Table 2

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

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


* p-values of Mann-Whitney rank sum test to compare median of 2 groups.

** Combined overweight and obese using IOTF cut-off values

Nguyen et al. BMC Public Health 2010 10:141   doi:10.1186/1471-2458-10-141

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