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. 2012 Oct 1;11(2):240–252. doi: 10.1111/mcn.12005

Table 3.

Multivariable model for body mass index‐for‐age z‐scores by socio‐economic, maternal and child characteristics [Acrelândia, Brazil (2003–2009)]

Adjusted mean (SE) BAZ according to age* (n = 255)
6 months 12 months 2 years 7 years 10 years
Child's sex
Female −0.92 (0.35) −0.42 (0.26) −0.59 (0.15) −0.94 (0.11) −0.66 (0.14)
Male −0.10 (0.27) 0.23 (0.30) −0.35 (0.17) −0.47 (0.13) −0.45 (0.16)
Difference (95% CI) 0.82 (0.10, 1.54) 0.65 (0.08, 1.23) 0.24 (−0.10, 0.59) 0.47 (0.21, 0.72) 0.21 (−0.09, 0.52)
Wealth index
Below median −0.92 (0.35) −0.42 (0.26) −0.59 (0.15) −0.94 (0.11) −0.66 (0.14)
Above median −0.62 (0.35) −0.22 (0.28) −0.39 (0.15) −0.58 (0.12) −0.17 (0.14)
Difference 0.30 (−0.38, 0.98) 0.20 (−0.33, 0.75) 0.20 (−0.14, 0.54) 0.36 (0.10, 0.61) 0.49 (0.19, 0.81)
Mother's BMI (kg m−2)
Non‐overweight (<25) −0.92 (0.35) −0.42 (0.26) −0.59 (0.15) −0.94 (0.11) −0.66 (0.14)
Overweight (≥25) −0.80 (0.43) 0.31 (0.36) −0.23 (0.21) −0.40 (0.17) 0.03 (0.19)
Difference 0.12 (−0.57, 0.79) 0.73 (0.11, 1.35) 0.36 (0.01, 0.73) 0.54 (0.22, 0.85) 0.69 (0.35, 1.04)
Child's birthweight (g)
a. ≤2500 0.48 (0.51) 0.09 (0.47) −0.39 (0.36) −0.70 (0.35) −0.28 (0.38)
b. 2501–3500 −0.92 (0.35) −0.42 (0.26) −0.59 (0.15) −0.94 (0.11) −0.66 (0.14)
c. >3500 0.00 (0.26) 0.35 (0.31) −0.15 (0.20) −0.74 (0.14) −0.46 (0.20)
Difference (a – b) 1.40 (0.21, 2.58) 0.51 (−0.46, 1.48) 0.20 (−0.53, 0.94) 0.24 (−0.47, 0.94) 0.38 (−0.39, 1.15)
Difference (c – b) 0.92 (0.26, 1.59) 0.77 (0.24, 1.30) 0.44 (0.10, 0.80) 0.20 (−0.06, 0.45) 0.20 (−0.16, 0.56)

BMI, body mass index; CI, confidence interval; SE, standard error. *BAZ: BMI‐for‐age z‐scores, calculated according to the WHO growth references (de Onis et al. 2007, WHO 2006). Adjusted mean values and standard errors were estimated from restricted cubic spline regression models.