Skip to main content

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