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Table 5 Multivariable logistic regression analysis of VLBW and LBW with age for confounding factors (obesity, use of ART, smoking)

From: Impact of aging on obstetric outcomes: defining advanced maternal age in Barcelona

 

n

VLBW < 1500 (aOR 95% CI)

n

LBW < 2500 (aOR 95% CI)

Total (Inc)

 

159 (0.6%)

 

1311 (5.2%)

<  30

15

1

129

1

30–34

51

0.97 (0.48–1.94)

475

0.98 (0.78–1.22)

35–39

70

1.27 (0.64–2.50)

524

1.04 (0.83–1.30)

40–44

20

1.24 (0.56–2.78)

161

1.03 (0.78–1.34)

≥ 45

3

1.81 (0.45–7.23)

22

1.08 (0.64–1.83)

  1. aOR adjusted odds ratio. CI confidence interval. Inc. incidence. n number of newborns. Ref reference group. VLBW very low birth weight. LBW low birth weight