Table I.
Demographic and protein characteristics of sample (n = 166)
| Characteristics | MRI population |
Not in MRI sample |
P value |
|---|---|---|---|
| Sex | .042 | ||
| Female | 93 (56) | 335 (47) | |
| Male | 73 (44) | 373 (53) | |
| Gestational age, wk | .984 | ||
| 23-24 | 35 (21) | 145 (20) | |
| 25-26 | 75 (45) | 321 (45) | |
| 27 | 56 (34) | 242 (34) | |
| Birthweight z-score | .968 | ||
| Less than −2 | 9 (5) | 43 (6) | |
| Between −2 and −1 | 22 (13) | 93 (13) | |
| Greater than −1 | 135 (81) | 572 (81) | |
| Maternal race | .148 | ||
| White | 102 (62) | 442 (63) | |
| Black | 50 (30) | 176 (25) | |
| Other | 12 (7) | 82 (12) | |
| Hispanic ethnicity | .523 | ||
| Yes | 14 (8) | 71 (10) | |
| No | 152 (92) | 635 (90) | |
| Maternal education | .750 | ||
| High school or less | 66 (40) | 281 (41) | |
| Some college | 42 (25) | 156 (23) | |
| College graduate | 57 (35) | 247 (36) | |
| Insurance | .033 | ||
| Private | 96 (58) | 472 (67) | |
| Public | 70 (42) | 236 (33) | |
| Elevated inflammatory proteins | <.001 | ||
| 0 | 62 (37) | 368 (57) | |
| 1-2 | 48 (29) | 198 (31) | |
| ≥3 | 56 (34) | 79 (12) | |
| Elevated neurotrophic proteins | <.001 | ||
| 0-1 | 67 (40) | 328 (51) | |
| 2-3 | 51 (31) | 181 (28) | |
| ≥4 | 48 (29) | 137 (21) |
Values are number (%).