Table 2.
Sample characteristics by MA exposure
| Number (Percent) a / Mean (SD) | |||
|---|---|---|---|
|
| |||
| MA Exposed (N = 103) |
Comparison (N= 107) |
P-Value | |
|
Maternal and demographic characteristics at
birth |
|||
| Culture | 0.572 | ||
| White | 58 (56.3%) | 50 (46.7%) | |
| Maori | 33 (32.0%) | 40 (37.4%) | |
| Pacific Islander | 9 (8.7%) | 13 (12.1%) | |
| Asian | 3 (2.9%) | 3 (2.8%) | |
| Indian-Pakistani | 0 (0.0%) | 1 (0.9%) | |
| Low socioeconomic status | 50 (49.0%) | 21 (19.6%) | <0.001 |
| No partner at birth | 54 (52.4%) | 29 (27.1%) | <0.001 |
| Education <5th form | 66 (64.1%) | 55 (51.4%) | 0.063 |
| Maternal age (yr) | 26.8 (6.2) | 25.4(6.8) | 0.142 |
| GA at 1st prenatal visit, week | 15.9 (6.9) | 13.3 (5.7) | 0.004 |
| Prenatal tobacco use | 91 (88.3%) | 56 (52.3%) | <0.001 |
| Cigarettes/day across pregnancy | 8.9 (7.3) | 3.3 (5.6) | <0.001 |
| Prenatal alcohol use | 65 (63.1%) | 61 (57.0%) | 0.367 |
| Absolute alcohol/day across pregnancy | 0.32 (0.81) | 0.12 (0.28) | 0.014 |
| Prenatal marijuana use | 67 (65.0%) | 24 (22.4%) | <0.001 |
| Joints/day across pregnancy | 0.47 (0.99) | 0.18(0.66) | 0.014 |
| Neonatal characteristics | |||
| Gender (boy) | 55 (53.4%) | 58 (54.2%) | 0.907 |
| Birth Weight (g) | 3324(453) | 3492 (557) | 0.017 |
| Birth Length (cm) | 50.9 (2.3) | 51.2 (2.5) | 0.343 |
| Birth Head Circumference (cm) | 34.5 (1.7) | 34.9 (1.6) | 0.082 |
| Gestational Age (weelcs) | 39.2 (1.5) | 39.5 (1.4) | 0.080 |
| Small for Gestational Age | 9 (8.7%) | 13 (21.1%) | 0.420 |
| Low Birth (<2500) | 4 (3.9%) | 5 (4.7%) | 0.778 |
| Postnatal characteristics of the environment | |||
| Quality of the home (2.5 yr visit) | 33.3 (6.2) | 34.7 (6.2) | 0.145 |
| Caretaker IQ | 94.1 (9.6) | 90.7(13.6) | 0.081 |
| Low socioeconomic status (3 yr visit) | 46 (56.1%) | 19 (22.1%) | <0.001 |
a
The number of participants includes BSID-II or PDMS-2 evaluation at any visit