Caesarean section and adiposity at 6, 18 and 30 years of age: results from three Pelotas (Brazil) birth cohorts

Barros, Aluisio J. D.; Santos, Leonardo Pozza; Wehrmeister, Fernando; Motta, Janaina Vieira dos Santos; Matijasevich, Alicia; Santos, Ina S.; Menezes, Ana M. B.; Gonçalves, Helen; Assunção, Maria Cecília Formoso; Horta, Bernardo L.; Barros, Fernando C.

doi:10.1186/s12889-017-4165-3

BMC Public Health

Table 4 The 1982 cohort: crude and adjusted effects of cesarean section on fat mass index, BMI Z-score and height at age 30, overall and by sex. Adjusted effects obtained through linear regression. 1982 Pelotas Birth Cohort, Brazil, 2012–13

From: Caesarean section and adiposity at 6, 18 and 30 years of age: results from three Pelotas (Brazil) birth cohorts

Type of delivery	All (N = 3607)	Males (N = 1754)	Females (N = 1853)
Type of delivery	Coeff. (CI 95%)	Coeff. (CI 95%)	Coeff. (CI 95%)
Fat mass index at age 30
Crude effect	p < 0.001	p < 0.001	p < 0.001
C-section	0.68 (0.35;1.00)	0.58 (0.23;0.93)	0.90 (0.44;1.36)
Adjusted (model 1)^a	p < 0.001	p = 0.021	p < 0.001
C-section	0,66 (0.33;0.99)	0.41 (0.06;0.77)	1.10 (0.63;1.57)
Adjusted (model 2)^b	p = 0.077	p = 0.621	p = 0.001
C-section	0.32 (−0.03;0.68)	0.09 (−0.28;0.47)	0.82 (0.32;1.32)
Adjusted (model 3)^c	p = 0.075	p = 0.619	p = 0.001
C-section	0.32 (−0.03;0.68)	0.10 (−0.28;0.47)	0.82 (0.32;1.32)
BMI Z-score at age 30
Crude effect	p < 0.001	p = 0.012	p = 0.015
C-section	0.13 (0.06;0.21)	0.12 (0.03;0.21)	0.14 (0.03;0.26)
Adjusted (model 1)^a	p < 0.001	p = 0.065	p < 0.001
C-section	0.15 (0.08;0.23)	0.09 (−0.01;0.18)	0.22 (0.10;0.34)
Adjusted (model 2)^b	p = 0.021	p = 0.426	p = 0.018
C-section	0.09 (0.01;0.17)	0.04 (−0.06;0.14)	0.15 (0.03;0.28)
Adjusted (model 3)^c	p = 0.019	p = 0.415	p = 0.018
C-section	0.09 (0.01;0.17)	0.04 (−0.06;0.14)	0.15 (0.03;0.28)
Height (cm) at age 30
Crude effect	p = 0.399	p = 0.527	p = 0.947
C-section	0.29 (−0.39;0.97)	0.23 (−0.49;0.96)	0.02 (−0.62;0.67)
Adjusted (model 1)^a	p = 0.383	p = 0.193	p = 0.054
C-section	−0.31 (−0.99;0.38)	−0.47 (−1.18;0.24)	−0.63 (−1.27;0.01)
Adjusted (model 2)^b	p = 0.602	p = 0.150	p = 0.068
C-section	−0.21 (−0.96;0.55)	−0.57 (−1.36;0.21)	−0.65 (−1.35;0.05)
Adjusted (model 3)^c	p = 0.560	p = 0.145	p = 0.053
C-section	−0.22 (−0.95;0.51)	−0.56 (1.32;0.19)	−0.67 (−1.34;0.01)

^aModel 1: adjusted for economic position at birth, maternal schooling, mother’s skin colour and financing of delivery
^bModel 2: model 1 + mother’s pre-gestational BMI (linear and quadratic), parity, mother’s age at birth and smoking during pregnancy
^cModel 3: model 2 + birth weight (birth length is not available for this cohort)

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ISSN: 1471-2458

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