Table 2: Logistic regression analysis of preeclampsia with known contributing variables as well as methamphetamine use
| Variable | Significance (p) | 95% confidence interval | |
| Lower | Upper | ||
| Methamphetamine | .026 | .166 | .893 |
| Advanced maternal age | .414 | .351 | 12.8 |
| Previous preeclampsia | .310 | .138 | 508 |
| Nulliparity | .128 | .762 | 8.7 |
| Obesity | .093 | .850 | 8.2 |
| Diabetes | .634 | .004 | 27.5 |
| Hypertension | .116 | .423 | 2514 |
| Smoking | .092 | .021 | 1.3 |