Table 2.
OLS Coefficients of the Demand Function for Time before Prenatal Care Initiation in Weeks
| Model Covariates | Pooled Birth Sample (N=4742) |
|---|---|
| Intercept | 48.7*** (5.3) |
| Family history of birth defects | -0.5 (0.4) |
| Difficulty in conception | -0.6 (0.5) |
| Acute maternal illness | -1.3*** (0.3) |
| Chronic maternal illness | -0.8*** (0.3) |
| First trimester bleeding | -1.7*** (0.4) |
| Prior live births | 1.0*** (0.1) |
| Prior miscarriages/stillbirths | -0.2 (0.2) |
| Maternal age | -0.6*** (0.2) |
| Maternal age squared | 0.01** (0.003) |
| Maternal education-Less than primary | 1.0** (0.5) |
| Maternal education-Incomplete secondary | -0.4 (0.3) |
| Maternal education-Secondary | -1.1*** (0.4) |
| Maternal education-University | -1.9*** (0.5) |
| Maternal employment | 0.9*** (0.3) |
| Native ancestry | 1.8*** (0.4) |
| European Latin ancestry | -0.7** (0.3) |
| European non-Latin ancestry | -0.4 (0.4) |
| All other ancestry | -0.4 (0.6) |
| Pregnancy year 95 | -0.4 (0.6) |
| Pregnancy year 96 | -0.04 (0.6) |
| Pregnancy year 97 | 0.3 (0.6) |
| Pregnancy year 98 | -0.5 (0.6) |
| Pregnancy year 99 | -0.2 (0.6) |
| Pregnancy year 00 | -0.4 (0.6) |
| Pregnancy year 01 | -0.1 (0.6) |
| Pregnancy year 02 | -2.1*** (0.7) |
| Clinics concentration (2003) | -0.7*** (0.1) |
| Residents per hospital bed (1995) | -0.002 (0.003) |
| Unemployment (2002) | -0.1 (0.1) |
| Female uninsured (2001) | -0.4*** (0.1) |
| Unmet basic needs (2001) | 0.1* (0.1) |
| R squared | 0.12 |
Note: The variables and reference categories of the dummy variables are as listed in Table 1. Robust standard errors of regression parameters are listed in parentheses. *, **, and *** indicate significant coefficients at p<0.1, p<0.05 and p<0.01 respectively.