Table 1.
Characteristics of study population
| Term | Preterm | ||||
|---|---|---|---|---|---|
| N | % | N | % | p-Value | |
| Total | 248 | 35 | |||
| Maternal race/ethnicity | 0.0038 | ||||
| Non-Hispanic White | 103 | 41.53 | 11 | 31.43 | |
| Non-Hispanic Black | 10 | 4.03 | 3 | 8.57 | |
| Asian | 47 | 18.95 | 3 | 8.57 | |
| Pacific Islander | 2 | 0.81 | 2 | 5.71 | |
| Hispanic | 61 | 24.6 | 13 | 37.14 | |
| American Indian/Alaskan Native | 1 | 0.4 | 2 | 5.71 | |
| Other | 18 | 7.26 | 1 | 2.86 | |
| Missing | 6 | 2.42 | |||
| Maternal education | 0.001 | ||||
| Some high school or less | 23 | 9.27 | 6 | 17.14 | |
| Highschool diploma/GED | 15 | 6.05 | 5 | 14.29 | |
| Some college | 44 | 17.74 | 6 | 17.14 | |
| College graduate or more | 162 | 65.32 | 14 | 40 | |
| Missing | 4 | 1.61 | 4 | 11.43 | |
| Maternal age | 0.0889 | ||||
| <20 y | 6 | 2.42 | |||
| 20–24 y | 16 | 6.45 | 7 | 20 | |
| 25–29 y | 62 | 25 | 5 | 14.29 | |
| 30–34 y | 105 | 42.34 | 13 | 37.14 | |
| 35–39 y | 48 | 19.35 | 7 | 20 | |
| 40+ y | 10 | 4.03 | 3 | 8.57 | |
| Missing | 1 | 0.4 | |||
| Prepregnancy BMI | 0.0171 | ||||
| Underweight | 9 | 3.63 | 1 | 2.86 | |
| Normal | 125 | 50.4 | 8 | 22.86 | |
| Overweight | 52 | 20.97 | 11 | 31.43 | |
| Obese I | 21 | 8.47 | 5 | 14.29 | |
| Obese II | 14 | 5.65 | 6 | 17.14 | |
| Obese III | 5 | 2.02 | 2 | 5.71 | |
| Missing | 22 | 8.87 | 2 | 5.71 | |
| Marital status | 0.0141 | ||||
| Single | 15 | 6.05 | 2 | 5.71 | |
| In a relationship | 52 | 20.97 | 10 | 28.57 | |
| Married | 176 | 70.97 | 19 | 54.29 | |
| Missing | 5 | 2.02 | 4 | 11.43 | |
| Gestational weeks at delivery | |||||
| <32 wk | 6 | 17.14 | |||
| 32–36 wk | 29 | 82.86 | |||
| 37+ wk | 248 | 100 |
Abbreviations: BMI, body mass index; GED, General Education Development.