Table 1.
Effects, means and standard deviations for covariates included in the MANCOVA for full sample and ERP subsamples.
| Full Sample (N = 110) | PCE M (SD) | NDE M (SD) | F | p | partial η2 |
|---|---|---|---|---|---|
| KBIT: Nonverbal IQ | 85.500 (15.250) | 97.800 (14.650) | 8.030 | <.001 | .37 |
| SES | 4.020 (0.805) | 4.630 (1.170) | 1.445 | .190 | .09 |
| Marijuana | 0.510 (0.770) | 0 | 0.680 | .680 | .04 |
| Alcohol | 2.730 (4.740) | 0.100 (0.300) | 1.550 | .160 | .10 |
| Cigarettes | 5.580 (10.850) | 0 | 1.827 | .090 | .12 |
| Age | 17.370 (1.880) | 16.800 (1.990) | 5.350 | <.001 | .28 |
| grade | 11.020 (1.610) | 10.920 (1.470) | 4.190 | <.001 | .23 |
|
| |||||
| RPT & SPT (N = 70) | |||||
| KBIT: Nonverbal IQ | 89.570 (15.800) | 96.570 (13.580) | 5.68 | <.001 | .42 |
| SES | 3.940 (0.830) | 4.710 (1.100) | 1.58 | .160 | .17 |
| Marijuana | 0.571 (0.500) | 0 | 1.41 | .220 | .15 |
| Alcohol | 3.500 (5.260) | 0.057 (0.235) | 2.68 | .020 | .25 |
| Cigarettes | 8.310 (12.530) | 0 | 2.65 | .020 | .25 |
| Age | 17.370 (2.050) | 16.600 (1.900) | 3.45 | <.010 | .35 |
| grade | 11.060 (1.300) | 10.680 (1.600) | 2.58 | .020 | .25 |
|
| |||||
| SAT (N = 60) | |||||
| KBIT: Nonverbal IQ | 85.260 (15.300) | 95.500 (15.400) | 5.68 | <.001 | .47 |
| SES | 4.030 (0.850) | 4.500 (1.100) | 2.10 | .060 | .25 |
| Marijuana | 0.500 (0.510) | 0 | 0.94 | .480 | .13 |
| Alcohol | 2.100 (4.160) | 0.130 (0.340) | 1.80 | .110 | .22 |
| Cigarettes | 7.430 (12.170) | 0 | 2.54 | .020 | .28 |
| Age | 17.020 (1.850) | 16.770 (1.900) | 2.38 | .030 | .27 |
| grade | 10.800 (1.096) | 10.930 (1.510) | 1.77 | .110 | .22 |
Note. Substance use is reported as mean number of days in 30 days prior to birth. SES is reported as maternal education, which is a mean of the following: 1 = less than 7th grade; 2 = junior high; 3 = some high school; 4 = high school or GED; 5 = some college; 6 = undergrad degree; 7 = graduate degree.