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Table 2 Estimates of outcome measures among women aged 14 to 17 years compared with women aged 20 to 29 years

From: Preterm birth and reduced birthweight in first and second teenage pregnancies: a register-based cohort study

 

First Births (n = 25780)

Second births (n = 23072)

Outcomes

Number of babies

Crude estimatea (95% CI)

Adjusted estimatea (95% CI)

Number of babies

Crude estimatea (95% CI)

Adjusted estimatea (95% CI)

Birthweight in grams

3065

-51(-73, -29)

-24(-40, -7)b

571

-158(-209, -107)

-80(-115, -46)b

Birthweight in term babies

2847

-39(-59, -19)

-27(-44, -11)b

512

-120(-166, -74)

-88(-124, -52)b

SGA

147

0.88(0.73-1.05)

0.89(0.74-1.07)c

42

1.33(0.96-1.85)

1.23(0.88-1.71)c

VSGA

88

0.78(0.62-0.98)

0.79(0.63-0.99)c

32

1.49(1.03-2.16)

1.38(0.95-2.00)c

Preterm birth 33-36 weeks

151

1.23(1.03-1.48)

1.21(1.01-1.45)c

40

1.87(1.33-2.65)

1.93(1.38-2.69)c

Very preterm birth 23-32 weeks

65

1.45(1.07-1.95)

1.71(1.29-2.26)c

15

2.06(1.20-3.55)

1.87(1.10-3.18)c

  1. a The estimate of the effect of young maternal age on birthweight is birthweight mean difference in grams; the estimates of SGA, VSGA, preterm birth and very preterm birth are odds ratios.
  2. b adjusted for BMI, social deprivation score, infants sex, ethnicity and gestational age.
  3. c adjusted for BMI, social deprivation score, infants sex and ethnicity
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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