Table 2.
The Association of Massachusetts Health Reform with the Incidence of Low Birthweight (Percentage Point Change), Overall and by Subgroup
| Est. | SE | p‐Value | |
|---|---|---|---|
| Overall population | |||
| Treat × Implementation | 0.25 | 0.04 | .004 |
| Treat × Post | 0.10 | 0.14 | .527 |
| Baseline mean in MA | 5.28 | 0.04 | |
| Non‐Hispanic white mothers | |||
| Treat × Implementation | 0.32 | 0.09 | .020 |
| Treat × Post | 0.22 | 0.11 | .133 |
| Baseline mean in MA | 4.40 | 0.03 | |
| Non‐Hispanic African American mothers | |||
| Treat × Implementation | 0.07 | 0.25 | .801 |
| Treat × Post | −0.34 | 0.23 | .220 |
| Baseline mean in MA | 9.30 | 0.01 | |
| Hispanic mothers | |||
| Treat × Implementation | 0.32 | 0.28 | .324 |
| Treat × Post | −0.33 | 0.22 | .208 |
| Baseline mean in MA | 6.91 | 0.12 | |
| Unmarried mothers | |||
| Treat × Implementation | 0.13 | 0.08 | .166 |
| Treat × Post | −0.23 | 0.14 | .168 |
| Baseline mean in MA | 7.90 | 0.08 | |
| High school education or less (2001–2009) | |||
| Treat × Implementation | 0.10 | 0.05 | .102 |
| Treat × Post | 0.07 | 0.17 | .703 |
| Baseline mean in MA | 7.00 | 0.07 | |
All estimates are from separate regressions. Coefficients and standard errors have been scaled by 100 to represent percentage point change. Models adjust for mother's age, race, and marital status, birth order, county‐level poverty and unemployment, and state and year fixed effects. Source: 2001–2012 Birth Files and Area Health Resources Files.