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Table 1 Sample size and survey-weighted descriptives of analytical sample

From: Time trends and sex differences in associations between socioeconomic status indicators and overweight-obesity in Mexico (2006–2012)

 

Males

Females

 

2006

2012

2006

2012

 Sample size

12,520

15,140

18,938

20,711

 Expanded sample (thousands)

23,025

31,205

32,319

34,425

 Age in years (mean ± SD)

41.8 ± 14.7

40.7 ± 13.6

41.2 ± 14.6

41.2 ± 14.9

Standardizeda Wealth Index

 (mean ± SD)

0.0 ± 1.0

0.1 ± 0.9

0.0 ± 1.0

0.1 ± 1.0

 Median [p25, p75]

0.2 [−0.4, 0.8]

0.3 [−0.4, 0.9]

0.1 [−0.5, 0.7]

0.3 [−0.4, 0.9]

Education level

 No education (%)

7.4

5.4

10.2

7.4

 Elementary school (%)

37.7

30.6

43.1

34.6

 Middle school (%)

24.8

30.4

21.7

29.4

 High school (%)

15.3

17.9

14.4

15.9

 College/University (%)

14.7

15.7

10.6

12.7

Marital Status

 Single (%)

21.0

22.6

18.1

18.3

 Married/cohabitating (%)

74.2

72.4

68.1

66.0

 Widowed/separated (%)

4.8

5.0

13.8

15.7

Occupational status

 Otherb (%)

13.0

12.5

6.9

3.8

 Student (%)

2.8

3.4

2.2

2.8

 Housekeeper (%)

0.8

1.3

60.3

56.9

 Paid worker (%)

83.4

82.8

30.6

36.5

Contry region

 North (%)

21.6

21.1

19.5

19.6

 Centre (%)

28.9

28.9

30.1

29.0

 Mexico City (%)

20.3

19.8

20.4

20.3

 South (%)

29.2

30.2

29.9

31.1

Area of residence

 Urban (%)

80.3

78.3

79.4

79.3

 Rural (%)

19.8

21.7

20.6

20.7

Raw prevalence

 BMI ≥ 25 (%)

67.6

70.1

72.8

73.7

 BMI ≥ 30 (%)

24.8

27.4

35.2

38.1

  1. a Wealth Index obtained by extracting the first principal component from household material characteristics, source of household water, electricity and possession of durable goods, and standardized with respect to 2006
  2. bIncludes the retired, the disabled and workers in family business without pay
  3. The distribution of the unweighted sample over the socioeconomic covariate categories (not shown) was very similar to that presented in this table