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Table 3 Unadjusted and adjusted results for preterm birth among commercially-insured women, United States, 2011

From: Area-level deprivation and preterm birth: results from a national, commercially-insured population

Variable

Model 1 (unadjusted)

Model 2 (minimally adjusted)a

Model 3 (fully adjusted)b

OR

95% CI

P value

OR

95% CI

P value

OR

95% CI

P value

Area-level deprivation

 Quartile 1 (least deprived)

1.0

  

1.0

  

1.0

  

 Quartile 2

1.112

1.037,1.193

0.003

1.115

1.039,1.196

0.003

1.096

1.021, 1.176

0.011

 Quartile 3

1.152

1.074,1.235

< 0.001

1.143

1.064,1.228

< 0.001

1.113

1.035, 1.195

0.004

 Quartile 4 (most deprived)

1.328

1.241,1.421

< 0.001

1.322

1.233,1.417

< 0.001

1.249

1.165, 1.339

< 0.001

  1. a Generalized estimating equation model results controlling for age at delivery and census division
  2. b Generalized estimating equation model results controlling for age at delivery, census division, hypertension, gestational diabetes, pre-existing diabetes, infection, incompetent cervix, poor obstetric history, premature rupture of membranes, mode of delivery, substance use, and mental health conditions
  3. OR odds ratio, CI confidence interval