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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: J Dev Orig Health Dis. 2019 Feb 7;10(5):555–562. doi: 10.1017/S2040174419000047

Table 1:

Sample Characteristics by Delivery Type

Sample
(N=828)
Vaginal
(N=490)
Caesarean
(N=338)
Mean(SD)/%(n)
Maternal characteristics
Maternal age, years 26.6 (6.7) 26.0 (6.6) 27.1 (6.7)*
Maternal education, %secondary 68.5 (614) 66.1 (324) 76.3 (258)**
Maternal ethnicity, %mestizo 80.3 (719) 79.8 (391) 86.1 (291)***
% indigenous 11.3 (101) 12.5 (61) 3.9 (13)***
Income, % bottom quintile 30.0 (269) 29.4 (144) 24.0 (81)***
% top quintile 11.6 (104) 8.0 (39) 18.1 (61)***
Region, %urban 60.7 (544) 58.6 (287) 70.7 (239)***
Marital status, %unmarried 22.8 (204) 21.6 (106) 25.7 (87)
Parity, %primiparous 37.9 (312) 37.1 (125) 38.4 (187)
Infant characteristics
Infant sex, %male 51.2 (424) 49.4 (242) 53.9 (182)
Infant age at survey, mo 15.7 (6.0) 16.0 (6.1) 15.3 (5.8)
Preterm, % yesa 10.5 (94) 6.5 (32) 17.8 (60)***
Birthweight, gm (n=572) 3186 (532) 3160 (551) 3185 (491)
Low birthweight (n=572)b 6 (35) 6.7 (22) 5.7 (13)
Breast feeding initiation, % yes 98.4 (811) 98.8 (481) 97.9 (330)
Breast feeding duration, mo 11.3 (5.4) 11.8 (5.4) 10.8 (5.4)**
*

p<0.05,

**

p<0.01,

***

p<0.001 for difference between vaginally and Caesarean deliveries from chi-square for categorical variables or t-tests for continuous variables.

a

maternal report of birth prior to 9 months

b

birthweight <2500gm