Table II.
Descriptive information for full sample and subsamples of children with and without complete MRA
| Analytic subsample |
||||
|---|---|---|---|---|
| Characteristics | Full sample (n = 140-162) | No MRA data (n = 35-44) | MRA data (n = 99-118) | t |
| Infant | ||||
| Gestational age (days) | 277.22 (9.92) | 277.07 (10.67) | 277.27 (9.67) | 0.12 |
| Birthweight (kg) | 3.35 (0.46) | 3.30 (0.53) | 3.36 (0.43) | 0.69 |
| Female | 52% | 61% | 49% | 1.38 |
| Ethnicity | ||||
| Hispanic | 40% | 30% | 44% | 1.68* |
| Race† | ||||
| Caucasian | 16% | 20% | 14% | † |
| African-American | 32% | 39% | 30% | |
| Mixed/other | 52% | 41% | 56% | |
| Illness (n = 109) | ||||
| Discrete infection count | 2.50 (2.17) range: 0-11 | |||
| Discrete noninfectious illness count | 2.68 (2.10) range: 0-8 | |||
| Illness diversity | 4.50 (2.81) range: 0-12 | |||
| Maternal | ||||
| Maternal age (years) | 27.89 (5.61) | 28.08 (5.84) | 0.19 | |
| Intervention group | 45% | 58% | ||
| Parity (primiparous) | 45% | 46% | 0.03 | |
| Married/partnered | 68% | 68% | 0.08 | |
| Income | $26 917.49 range: $0-98 000 | $22 906.93 range: $0-$86 000 | 1.07 | |
| Percent poverty | 161.05 (159.74) | 132.46 (108.77) | 1.28 | |
| PSS | ||||
| Early pregnancy | 1.83 (0.62) | 2.03 (0.53) | 1.76 (0.63) | 2.49‡ |
| Late pregnancy | 1.63 (0.68) | 1.67 (0.69) | 1.61 (0.67) | 0.51 |
| Prenatal average | 1.75 (0.59) | 1.88 (0.58) | 1.70 (0.59) | 1.69* |
| Postnatal | 1.50 (0.71) | 1.67 (0.65) | 1.44 (0.72) | 1.66* |
| SLE | ||||
| SLE count | 2.61 (2.09) | 2.46 (2.42) | 2.65 (1.99) | 0.49 |
| Squareroot SLE count | 1.42 (0.76) | 1.30 (0.88) | 1.46 (0.72) | 1.11 |
| Depression (PHQ) | ||||
| Early pregnancy | 7.14 (4.93) | 8.38 (4.96) | 6.67 (4.86) | 1.96* |
| Late pregnancy | 5.42 (4.37) | 6.09 (4.95) | 5.15 (4.09) | 1.16 |
| Prenatal average | 6.41 (4.10) | 7.35 (3.85) | 6.05 (4.16) | 1.79* |
| Postnatal | 4.53 (4.00) | 6.34 (4.04) | 3.93 (3.82) | 3.19§ |
PHQ, Patient Health Questionnaire-9; PSS, Perceived Stress Scale; SLE, stressful life events. Values are mean (SD) unless otherwise noted.
*
P < .10.
‡
P < .05.
§
P < .01.
†
Race categories do not significantly differ between subsamples (χ2[df = 2] = 2.93; P = .23).