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. Author manuscript; available in PMC: 2018 Mar 1.
Published in final edited form as: Am J Obstet Gynecol. 2016 Dec 27;216(3):316.e1–316.e9. doi: 10.1016/j.ajog.2016.12.018

Table 2.

Socio-demographic, maternal pregnancy, and birth related characteristics comparing pregnancies that had an infant mortality to pregnancies without an infant mortality.

No Infant Mortality Infant Mortality IMR P value
Socio-Demographic Characteristics

Age in years Mean (SD) 27.3 (5.9) 26.4 (6.2) p < 0.001
Married 57.3% 41.3% 5.2 p < 0.001
≤ High School Education 15.9% 23.8% 10.4 p < 0.001
Medicaid 38.6% 50.6% 9.4 p < 0.001
WIC 41.9% 43.8% 7.3 p = 0.001
Tobacco Use 23.7% 31.2% 9.3 p < 0.001
≤ 5 Prenatal Visits 8.9% 42.5% 29.7 p < 0.001
Non-Hispanic White 78.3% 65.2% 6.0 p < 0.001
Non-Hispanic Black 16.8% 30.8% 13.1 p < 0.001
Hispanic 4.6% 4.3% 6.7 p = 0.227
Primip 39.1% 38.1% 7.0 p = 0.706

Maternal Pregnancy Characteristics

Pre-gestational diabetes 0.9% 1.7% 13.9 p < 0.001
Chronic Hypertension 2.0% 3.3% 11.3 p < 0.001
Gestational diabetes 5.9% 4.7% 5.6 p < 0.001
Preeclampsia 5.8% 6.4% 7.8 p = 0.025

Birth Characteristics

Cesarean Delivery 30.8% 36.7% 8.6 p < 0.001
SGA Births <10% 10.7% 26.6% 16.5 p < 0.001
LGA Births >90% 9.9% 3.4% 2.3 p < 0.001
Preterm Birth 12.1% 66.1% 33.5 p < 0.001

IMR-Infant mortality rate; WIC-Woman, Infants, and Children; SGA-small for gestational age; LGA-large for gestational age. The IMR is displayed as number of infant deaths per 1000 live births among women with the corresponding characteristic.