The Intergenerational Effects on Birth Weight and Its Relations to Maternal Conditions, São Paulo, Brazil
Table 1
Low birth weight analysis (<2,500 g)—Group I.
Variable
Chi2
Spearman's Rho
OR
OR lower
OR upper
Maternal birth weight1 <2.500 g
0.264*
0.048
2.1
0.7
6.2
Maternal birth weight1 ≥3.500 g
0.126*
−0.058
2.6
0.8
8.6
Maternal age ≤19 years or ≥35 years
0.750*
0.006
1.1
0.3
3.7
Smoking during pregnancy2
0.114
0.057
2.0
0.8
4.9
Alcohol use during pregnancy2
1.000*
−0.007
1.2**
0.2
9.2
Illicit drug use during pregnancy2
0.083*
0.080
4.9
1.0
23.0
Arterial hypertension2
1.000*
0.001
1.0
0.2
4.5
Diabetes mellitus2
1.000*
−0.018
—
—
—
Urinary tract infections2
0.823
−0.008
1.1**
0.5
2.7
Leukorrhoea2
0.804
0.009
1.1
0.4
2.8
Others infectious diseases2
0.248*
−0.052
—
—
—
Anemia2
1.000*
−0.003
1.1**
0.1
8.4
Oligohydramnios2 or polyhydramnios2
0.555*
0.009
1.3
0.2
10.0
Noncommunicable diseases2
0.025
0.081
2.6
1.1
6.0
Maternal depression during pregnancy2
1.000*
−0.022
—
—
—
Maternal height <157 cm
0.323
0.036
1.5
0.7
3.3
Prepregnancy maternal BMI3 <18.5 kg/m2
1.000*
−0.005
1.17**
0.15
8.85
Prepregnancy maternal BMI3 ≥25 kg/m2
0.927
0.003
1.04
0.45
2.41
Prepregnancy maternal BMI3 ≥30 kg/m2
0.296*
0.038
1.79
0.6
5.34
Newborn height at birth ≤47.5 cm
0*
0.287
28.6
8.5
96.2
Gestational age (269–273 days)4
0.002
0.113
3.2
1.5
7.0
Surgical cesarean section
0.306
0.037
1.5
0.7
3.3
Fisher test. With homogenization signal, if OR <1, then consider OR = 1/OR. (—) Cell with zero occurrences, undefined OR.
1Maternal birth weight in grams.
2Maternal habits and diseases during pregnancy.
3Prepregnancy maternal BMI = prepregnancy body mass index maternal in Kg/m2.
4Gestational age in days (269–273) = gestational age varying from 38 weeks and 3 days to 39 weeks.
