Table 1.
Demographic characteristics at time of birth of mothers and children in the sample and not in sample
| In Sample | Not in Sample | |||
|---|---|---|---|---|
| N=871 (%) | N=95 (%) | X2 | ||
| Maternal characteristics at birth | ||||
| Age, years | <21 | 113 (13%) | 15 (16%) | 8.57 (df=2)**, p = 0.014 |
| 21-35 | 580 (67%) | 68 (70%) | ||
| >35 | 178 (20%) | 12 (13%) | ||
| Education, years | ≤ 12 (high school) | 346 (41%) | 57 (60%) | 3.44 (df=2), n.s. p = 0.17 |
| < 12-16> | 198 (23%) | 26 (27%) | ||
| ≥ 16 (≥ college) | 301 (36%) | 12 (13%) | ||
| Single marital status | Yes | 343 (40%) | 54(57%) | 25.69 (df=1)*** p < 0.001 |
| Public insurance | Yes | 297 (35%) | 64 (67%) | 6.62 (df=1)** p = 0.01 |
| Racial identity | White | 544 (63%) | 50 (53%) | 1.70 (df=2), n.s. p = 0.43 |
| Black | 220 (26%) | 38 (40%) | ||
| Other | 97 (11%) | 7 (7%) | ||
| Hispanic | Yes | 84 (10%) | 12 (13%) | 3.50 (df=1), n.s p = 0.06 |
| Newborn characteristics at time of birth | ||||
| Sex | Male | 442 (51%) | 54 (57%) | 3.66 (df=1), n. s. p = 0.06 |
| Gestational age, weeks | 23-24 | 174 (20%) | 26 (27%) | 9.87 (df=2)**. p = 0.007 |
| 25-26 | 391 (46%) | 46 (49%) | ||
| 27 | 294 (34%) | 23 (24%) | ||
| Birth weight, grams | ≤ 750 | 321 (37%) | 42 (44%) | 7.26 (df=2), n.s. p = 0.06 |
| 751-1000 | 377 (43%) | 39(41%) | ||
| > 1000 | 173 (20%) | 14 (15%) | ||
Note:
***
p<.001
**
p<.01
*
p<.05
n.s.p ≥ .05.