Multivariate Logistic Regression Model Predicting Whether the Prenatal Visit Occurred With a Family Physician vs an Obstetrician
| Predictor Variable | Unadjusted Odds Ratio (95% CI) | AdjustedaOdds Ratio (95% CI) |
|---|---|---|
| CI=confidence interval; MSA = metropolitan statistical area. | ||
| a Odds ratio adjusted for all listed variables plus race, geographic region, and high-risk diagnoses. | ||
| Non-MSA (vs MSA) | 6.13 (3.69 – 10.19) | 5.56 (3.23 – 9.62) |
| Biennial period, per 2 years | 0.85 (0.74 – 0.97) | 0.81 (0.68 – 0.97) |
| Age, years | ||
| >30 | 0.40 (0.27 – 0.60) | 0.63 (0.41 – 0.95) |
| 24–30 | 0.62 (0.46 – 0.83) | 0.80 (0.58 – 1.08) |
| <24 | 1.00 | 1.00 |
| Medicaid insurance | 2.25 (1.46 – 3.45) | 1.76 (1.10 – 2.82) |
| Self-pay status | 2.26 (1.24 – 4.12) | 1.87 (0.95 – 3.67) |
| Private insurance | 1.00 | 1.00 |