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Table 4 a – Odds ratios (OR) and 95% confidence intervals (CI) for association of inadequate/no prenatal care with preterm birth (< 37 completed weeks gestation)*

From: Inadequate prenatal care and its association with adverse pregnancy outcomes: A comparison of indices

a – Odds ratios (OR) and 95% confidence intervals (CI) for association of inadequate/no prenatal care with preterm birth (< 37 completed weeks gestation)*

Index

Unadjusted OR

95% CI

Adjusted OR**

95% CI

APNCU Index

1.3

1.2 – 1.5

1.2

1.1 – 1.3

R-GINDEX

1.1

1.0 – 1.2

1.0

0.9 – 1.1

b – Odds ratios (OR) and 95% confidence intervals (CI) for association of inadequate/no prenatal care with low birth weight (<2500 grams)*

Index

Unadjusted OR

95% CI

Adjusted OR**

95% CI

APNCU Index

1.4

1.3 – 1.6

1.3

1.2 – 1.5

R-GINDEX

1.2

1.1 – 1.4

1.1

1.0 – 1.3

c – Odds ratios (OR) and 95% confidence intervals (CI) for association of inadequate/no prenatal care with small-for-gestational age (birth weight < 10 th percentile for gestational age)*

Index

Unadjusted OR

95% CI

Adjusted OR**

95% CI

APNCU Index

1.5

1.4 – 1.6

1.4

1.3 – 1.5

R-GINDEX

1.4

1.3 – 1.5

1.4

1.3 – 1.5

  1. * Inadequate/no prenatal care was compared to the reference group of all other types of care (intermediate, adequate and intensive).
  2. **Controlling for maternal age and parity, and adjusting for within-mother dependency. Maternal age was studied using categories of <20 years, 20–24 years, 25–29 years, 30–34 years, and 35+ years, with 35+ years as the reference group. Parity was studied using categories of first birth, 2nd-3rd birth and 4 or more births, with first birth as the reference group.
b – Odds ratios (OR) and 95% confidence intervals (CI) for association of inadequate/no prenatal care with low birth weight (<2500 grams)*c – Odds ratios (OR) and 95% confidence intervals (CI) for association of inadequate/no prenatal care with small-for-gestational age (birth weight < 10th percentile for gestational age)*
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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