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. 2009 Feb;44(1):145–161. doi: 10.1111/j.1475-6773.2008.00907.x

Table 2.

Results for Monthly Medicaid Expenditures and Health Services Use

Children with Asthma
Adults with Diabetes
Likelihood of Use (Percentage Point) Level of Use Conditional on Some Use (ln($)) Incremental Effect ($) Likelihood of Use (Percentage Point) Level of Use Conditional on Some Use (ln($)) Incremental Effect ($)
Directs effects
NEMT .05551*** −2.022*** 9.71*** −.0365*** −.711*** −11.74***
(.00068) (.032) (1.15) (.0012) (.029) (1.14)
Ambulance −.00196*** −.25 −.73 −.0022 −.21** −1.15
(.00064) (.27) (4.41) (.0014) (.11) (6.69)
Spill-over effects
Total .0486*** −.2098*** −17.80*** .0108*** −.0731*** −17.79***
(.0019) (.0080) (1.24) (.0019) (.0078) (2.47)
Inpatient −.00479*** −.09 −3.78** .0019 −.152*** −8.86
(.00048) (.12) (1.77) (.0012) (.048) (24.94)
Emergency room −.0027 −.029 −.20 −.0016 .044 .03
(.0017) (.037) (.43) (.0019) (.043) (.56)
Outpatient .0504*** −.2194*** −16.41*** .0477*** −.159*** −8.62***
(.0019) (.0098) (3.03) (.0023) (.013) (3.39)
Prescription drug −.0019 −.014 −.35 .0076** −.016 −.08
(.0034) (.019) (.69) (.0033) (.012) (2.23)
Health services use
CSC admissions .00035 −.00107**
(.00021) (.00033)
ER use due to asthma −.00038 −.00058
(children) or diabetes (adults) (.00020) (.00033)
***

Significant at .001.

**

Significant at .05.

Children with asthma: For total, inpatient, and outpatient expenditures, the total number of observation is 1,139,803 at the person month level on 36,712 unique persons. For prescription drug and emergency room expenditures the total number of observation is 634,434 at the person month level on 22,327 observations. Incremental effects of expenditure variables are in dollar amount and calculated based on the sample of 800,000 observations.

Adults with diabetes: For total, inpatient, and outpatient expenditures, the total number of observation is 687,858 at the person month level on 18,336 unique persons. For prescription drug and emergency room expenditures, the total number of observation is 477,002 at the person month level on 12,884 observations. Incremental effects of expenditure variables are in dollar amount and calculated based on the sample of 480,000 observations.

All models control for person fixed effects, year fixed effects, and month dummy variables.