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Table 1 Basic characteristics of the study population, INCAP Longitudinal Study

From: Age at childbirth and change in BMI across the life-course: evidence from the INCAP Longitudinal Study

 

Women in 1988-89

(n=498)

Women in 2002-04

(n=778)

Women in 2015-17

(n=685)

Age (y)

19.9 (3.2)

31.9 (5.3)

45.0 (4.3)

Age at menarche (y)

13.7 (1.4)

13.6 (1.4)

13.6 (1.4)

Time between menarche and first pregnancy among parous women (y)

7.4 (3.9)

7.2 (3.7)

7.3 (3.7)

Age at first birth among parous women (y)

21.1 (4.0)

20.8 (3.7)

20.7 (4.0)

BMI (kg/m2)

20.7 (3.4)

26.6 (4.6)

29.2 (5.1)

Waist circumference (cm)

73.6 (9.9)

91.8 (11.3)

101.7 (12.6)

Total grades completed (y)

3.6 (2.2)

3.6 (2.2)

3.4 (2.1)

Maternal Schooling (y)

1.4 (1.6)

1.5 (1.6)

1.3 (1.6)

Married/in union (%)

42.1

30.8

30.1

Atole exposure (%)

49.8

52.0

55.0

  1. Values are mean (SD) unless otherwise specified