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Table 1 Descriptive statistics for Chinese school children by age group, China Health and Nutrition Survey (CHNS) 2004-2011a

From: Trends in domain-specific physical activity and sedentary behaviors among Chinese school children, 2004–2011

 

CHNS Year

2004

2006

2009

2011

Children, 6–11 y

 N

722

687

628

629

 Female, %

47.2

46.7

42.2

48.3

 Age, years (SD)

9.2 (1.7)

9.3 (1.6)

9.2 (1.7)

9.1 (1.7)

 Urbanization index (SD)

57.9 (19.4)

59.7 (19.6)

63.0 (18.4)

66.0 (18.0)

 Maternal education, %

  Less than primary

7.3

11.4

9.8

8.0

  Primary completed

30.2

19.6

23.0

18.4

  Secondary or greater completed

62.5

68.9

67.2

73.6

Children, 12–18 y

 N

837

566

508

422

 Female, %

48.3

48.1

47.4

48.1

 Age, years (SD)

14.7 (1.6)

14.7 (1.7)

14.3 (1.6)

14.5 (1.6)

 Urbanization index (SD)

61.7 (20.0)

65.1 (20.3)

67.4 (19.4)

70.7 (18.5)

 Maternal education, %

  Less than primary

15.5

12.2

14.4

10.5

  Primary completed

21.0

16.5

23.6

19.9

  Secondary or greater completed

63.6

71.3

62.0

69.6

  1. aMegacities (Beijing, Shanghai, and Chongqing) added in CHNS 2011 are not included in Table. Percentages across levels of maternal education may not add to 100% due to rounding