Table 2.
Socio-economic and demographic characteristics of Benton County participants compared to non-recruited segment-eligible mothers during the same period.
| Characteristics | Benton County participants (n=147) | Non-recruited segment mothers (n=328) | RR [95% CI]a |
|---|---|---|---|
| Race/ethnicity, % | |||
| White/Non-Hispanic | 70.3 | 70.4 | reference |
| Black/Non-Hispanic | * | 2.7 | 0.72 [0.23, 2.26] |
| Asian or Pacific Islander | * | 8.8 | 0.38 [0.15, 0.95] |
| Hispanic | 19.6 | 16.2 | 1.55 [0.85, 2.83] |
| Other | * | 1.8 | 1.46 [0.33, 6.49] |
| Education, % | |||
| Less than High-School | 12.2 | 11.4 | 1.41 [0.68, 2.91] |
| High School | 24.5 | 38 | reference |
| Some College | 13.6 | 19.1 | 1.26 [0.65, 2.46] |
| College | 49.7 | 31.5 | 2.59 [1.45, 4.63] |
| Age (years) | |||
| 18-24 | 21.6 | 33.8 | reference |
| 25-34 | 66.9 | 55.8 | 1.30 [0.75, 2.26] |
| 35+ | 11.5 | 10.4 | 1.32 [0.61, 2.85] |
| Marital status | |||
| Married | 80.4 | 75 | reference |
| Unmarried | 19.6 | 25 | 1.07 [0.60, 1.92] |
| Number of prenatal visits, % | |||
| 10+ | 88 | 80.9 | reference |
| <10 | 12 | 19.1 | 0.61 [0.33, 1.13] |
| Gestational age, % mean (SD) | 38.7 (1.8) | 38.3 (2.1) | |
| 37+ weeks | 92.6 | 91.4 | reference |
| <37 weeks | 7.4 | 8.6 | 0.81 [0.33, 2.04] |
| Birth weight, % mean (SD) | 3.4 (0.5) | 3.3 (0.6) | |
| 2.5+ kg | 94.7 | 92.8 | reference |
| Less than 2.5 kg | * | 7.2 | 1.20 [0.40, 3.57] |
aRisk ratios (RR) adjusted by multivariable binary regression with a log link for maternal age, race/ethnicity, education, marital status, number of prenatal visits, gestational age, and birth weight.
*Counts of <10 that can be derived from percentages are not presented in accordance with the NCS Data Access and Confidentiality policy.