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. Author manuscript; available in PMC: 2018 Aug 28.
Published in final edited form as: J Health Econ. 2018 May 7;60:1–15. doi: 10.1016/j.jhealeco.2018.04.002

Table 4.

Estimates of the Effect of MMC on Individual Risk Adjustment Scores.

(1) (2) (3) (4)
County; Year Fixed Effects NO YES YES %change from (3)
Controls (incl. birth certificate informtion) NO YES YES
Child Fixed Effects NO NO YES
Panel A: The Effect of MMC on Risk Adjustment Score
Child in MMC 0.139***
(0.006)
0.035***
(0.005)
0.020***
(0.001)
17.40%
Mean outcome 0.115
Panel B: The Effect of MMC on Risk Adjustment Score Excluding Extra Weight for Asthma and ADHD
Child in MMC 0.099***
(0.004)
0.016***
(0.003)
0.009***
(0.001)
12.70%
Mean outcome 0.071

Notes: There are 2,960,843 observations. Controls include the child’s gender, race, birth month, child and maternal age (single year of age dummies), birth weight (<1500 g, 1500–2499 g, 2500–2999 g, 3000–3499g… >=4500 g), maternal education (<12, 12, some college, college plus, missing), Medicaid enrollment category, and monthly family income ($200, $200–399,…). Standard errors are clustered at the county level. In specification (3) controls include time-varying characteristics (income and age) and standard errors are clustered on patients.