Table 2 Distribution of individual prenatal risk factors in full sample and by latent class
From: Prenatal risk factors and neonatal DNA methylation in very preterm infants
Prenatal risk factors | Full sample (N = 601) | Typical (N = 367; 61%) | Physical risk (N = 155; 26%) | Psychological risk (N = 79; 13%) | χ2 |
|---|---|---|---|---|---|
Age > 35 | 18% | 18% | 18% | 14% | 0.89 |
Low SES | 10% | 6.5% | 14% | 18% | 12.78** |
< HS degree | 13% | 12% | 9.8% | 26% | 12.54** |
Minority | 58% | 57% | 56% | 66% | 2.45 |
No partner | 25% | 21% | 18% | 62% | 65.33*** |
No prenatal care | 2.7% | 1.6% | 1.9% | 9.1% | 14.01*** |
Underweight | 5.0% | 5.8% | 0.0% | 12% | 15.48*** |
Obese | 34% | 26% | 53% | 33% | 35.11*** |
Too much weight gained | 18% | 12% | 34% | 17% | 33.93*** |
Hypertension | 27% | 3.3% | 95% | 3.9% | 490.33*** |
Pre-eclampsia | 21% | 0.0% | 79% | 0.0% | 442.57*** |
Diabetes | 6.0% | 5.5% | 9.7% | 1.3% | 7.00* |
STI/HIV | 7.0% | 5.0% | 6.5% | 18% | 16.33*** |
Infection | 10% | 10% | 9.0% | 14% | 1.39 |
Alcohol | 3.2% | 1.4% | 2.6% | 13% | 27.18*** |
Illegal substances | 4.5% | 0.3% | 4.5% | 24% | 85.30*** |
Tobacco | 14% | 8.0% | 14% | 44% | 70.36*** |
Marijuana | 10% | 4.1% | 8.4% | 41% | 96.07*** |
Depression | 11% | 4.9% | 10% | 39% | 79.51*** |
Anxiety | 12% | 7.4% | 9.7% | 35% | 50.62*** |
Pregnancy “Hard Time” | 11% | 6.7% | 6.5% | 42% | 86.18*** |
Pregnancy “Felt Down” | 9.9% | 2.7% | 5.9% | 51% | 173.87*** |
Pregnancy “Felt Slow” | 20% | 13% | 23% | 46% | 44.90*** |
Pregnancy “Felt Hopeless” | 3.9% | 0.3% | 1.3% | 26% | 115.30*** |