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Table 1 General characteristics of the pregnant and breastfeeding womena

From: Association between total water intake and dietary intake of pregnant and breastfeeding women in China: a cross-sectional survey

Variables Pregnant women Breastfeeding women
sample size 200 150
Age (years) 28.7 (4.0) 31.9 (4.1)
BMI (kg/m2) 21.4 (4.0) 23 (3.7)
BMI classificationb
 Underweight 25 (13) 7 (4)
 Normal 138 (69) 91 (61)
 Overweight 21 (11) 39 (26)
 Obesity 12 (7) 12 (9)
Working Status
 Housewife 59 (30) 12 (8)
 Government employment 28 (14) 57 (38)
 Professionals 53 (27) 55 (36)
 Service 37 (19) 22 (15)
 Other 18 (9) 4 (2)
Education Level
 High School or below 56 (28) 11 (7)
 College 121 (61) 74 (49)
 Postgraduate or up 23 (11) 65 (44)
Physical activity
 Low 52 (26) 82 (55)
 Middle 100 (50) 24 (16)
 High 48 (24) 44 (29)
Gestational week
 First trimester 76 (38)
 Second trimester 65 (33)
 Third trimester 59 (29)
Feeding modes
 Breastfeeding 79 (52)
 Mixed feeding 71 (48)
  1. aContinuous data were presented as mean (SD) and categorized variables (including BMI classification, working status, educational level, and physical activity and gestational trimesters) as n (%).
  2. bBMI was calculated with pre-pregnancy weight for pregnant women, and current weight for breastfeeding women