Table 5. Summary of Logistic regression analysis for confounding factors associated with educational delay (0 = no delay, 1 = delay).
| Variable | B (SE) | p | Odds ratio (95% CI) |
|---|---|---|---|
| Step 1. Unadjusted | |||
| Methadone group status | 2.01 (0.36) | < .001 | 7.47 (3.71–15.02) |
| Step 2. Adjusted for confounding factors | |||
| Methadone group status | 1.29 (0.65) | .049 | 3.62 (1.01–13.01) |
| Maternal educational underachievement | -0.40 (0.15) | .006 | 0.69 (0.50–0.89) |
| Prenatal benzodiazepine use | 0.99 (0.49) | .044 | 2.70 (1.03–7.12) |
| Prenatal alcohol use | 0.90 (0.47) | .052 | 2.47 (0.99–6.15) |
| Prenatal cigarette use | -0.51 (0.60) | .391 | 0.60 (0.19–1.93) |
| Prenatal cannabis use | -0.28 (0.49) | .571 | 0.76 (0.29–1.98) |
| Maternal depression score at term | -0.02 (0.03) | .626 | 0.99 (0.93–1.05) |