TABLE 2.
Comparison of Reported Maternal Smoking Versus Cotinine Detection as a Predictor of Birth Weight
| Model | Parameter Estimate (SE) | P |
|---|---|---|
| Model 1 (n = 1401) | ||
| Intercept | 3591.9 (39.4) | <.001 |
| Black race | −199.2 (29.5) | <.001 |
| Female gender | −111.7 (29.5) | <.001 |
| State | ||
| WA (reference) | 0.0 | — |
| CA | −134.7 (43.3) | .002 |
| MI | −166.0 (44.6) | <.001 |
| NY | −184.0 (43.2) | <.001 |
| Detectable cotinine | −94.6 (31.5) | .003 |
| Model 1 R2 = 0.065 (P < .001) | ||
| Model 2 (n = 1395) | ||
| Intercept | 3594.4 (38.6) | <.001 |
| Black race | −219.7 (29.3) | <.001 |
| Female gender | −122.2 (29.2) | <.001 |
| State | ||
| WA (reference) | 0.0 | — |
| CA | −145.2 (42.9) | .001 |
| MI | −145.4 (44.3) | .001 |
| NY | −154.0 (43.0) | <.001 |
| Reported smoking during pregnancy | −283.7 (48.7) | <.001 |
| Model 2 R2 = 0.081 (P < .001) | ||
| Model 3 (n = 1395) | ||
| Intercept | 3584.6 (38.6) | <.001 |
| Black race | −209.6 (29.3) | <.001 |
| Female gender | −114.0 (29.3) | <.001 |
| State | ||
| WA (reference) | 0.0 | — |
| CA | −134.4 (43.0) | .002 |
| MI | −144.0 (44.6) | .001 |
| NY | −152.0 (43.2) | <.001 |
| Reported smoking during pregnancy and/or cotinine ≥9.0 ng/g | −213.5 (41.3) | <.001 |
| Model 3 R2 = 0.076 (P < .001) |