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. Author manuscript; available in PMC: 2022 Apr 1.
Published in final edited form as: Med Care Res Rev. 2019 Jul 9;78(2):113–124. doi: 10.1177/1077558719858839

Table 3.

Linear Probability Models of False Negative Responses (Dep Var = 1 if Survey Response is Not on Medicaid)

Explanatory Variable Respondents with Full
Medicaid from
Administrative Record
Respondents with Partial
Medicaid from
Administrative Record
Respondents with Full or
Partial Medicaid from
Administrative Record

Low Income
Respondents
LI, Age 65+
Community
Residents
Low Income
Respondents
LI, Age 65+
Community
Residents
Low Income
Respondents
LI, Age 65+
Community
Residents

(1) (2) (3) (4) (5) (6)

Female 0.004 0.005 0.009 0.005 −0.000 0.014
(0.008) (0.016) (0.034) (0.053) (0.013) (0.023)
Age >=75 & <85 0.027** 0.023 0.098** 0.056 0.074*** 0.045**
(0.011) (0.015) (0.039) (0.047) (0.016) (0.022)
Age >= 85 0.021 0.026 0.099* 0.080 0.058*** 0.052*
(0.015) (0.020) (0.055) (0.064) (0.022) (0.029)
Black 0.003 −0.003 0.019 0.026 −0.005 −0.010
(0.010) (0.018) (0.039) (0.056) (0.015) (0.026)
Asian −0.002 −0.033 0.080 0.114 −0.030 −0.063
(0.020) (0.027) (0.105) (0.141) (0.032) (0.045)
Other race −0.009 −0.029 −0.087 −0.064 −0.044** −0.059*
(0.013) (0.022) (0.061) (0.089) (0.021) (0.035)
Hispanic 0.008 −0.016 −0.011 −0.014 −0.026 −0.055*
(0.012) (0.019) (0.052) (0.071) (0.018) (0.029)
Widowed −0.009 −0.012 0.008 −0.040 −0.001 −0.040
(0.013) (0.020) (0.048) (0.063) (0.020) (0.029)
Separated/divorced −0.017 −0.026 −0.104** −0.180*** −0.061*** −0.110***
(0.013) (0.021) (0.044) (0.064) (0.019) (0.030)
Never married −0.006 0.010 −0.145*** −0.280** −0.093*** −0.116***
(0.013) (0.027) (0.049) (0.113) (0.019) (0.042)
Income as % FPL 0.023 0.006 0.298*** 0.336*** 0.224*** 0.287***
(0.015) (0.026) (0.059) (0.081) (0.022) (0.036)
High school graduate 0.003 0.010 0.084** 0.151*** 0.034** 0.095***
(0.009) (0.017) (0.036) (0.051) (0.014) (0.025)
Some college −0.003 0.004 0.008 0.091 0.023 0.049
(0.011) (0.022) (0.039) (0.062) (0.016) (0.030)
College grad or higher 0.013 0.025 −0.171** −0.205** −0.026 −0.042
(0.019) (0.031) (0.075) (0.095) (0.029) (0.044)
Fair/poor self-rated health −0.009 −0.020 −0.007 0.033 −0.020* −0.026
(0.008) (0.014) (0.032) (0.049) (0.012) (0.021)
Two or more ADLs −0.001 0.002 −0.056 −0.074 −0.040*** −0.053**
(0.009) (0.015) (0.035) (0.051) (0.013) (0.022)
Dementia or Alzheimer’s −0.007 0.006 0.085 0.081 −0.006 −0.006
(0.013) (0.019) (0.061) (0.084) (0.021) (0.031)
Log (Medicare spending), 2013 $ −0.004** −0.007** −0.014** −0.012 −0.013*** −0.019***
(0.002) (0.004) (0.007) (0.010) (0.003) (0.005)
Months covered by Medicaid −0.015*** −0.019*** −0.020*** −0.018** −0.019*** −0.021***
(0.002) (0.003) (0.006) (0.008) (0.002) (0.004)
Medicare Part A only −0.061 −0.032 0.618 −0.027 −0.091
(0.058) (0.089) (0.444) (0.100) (0.165)
Medicare Advantage −0.016 −0.020 0.071** 0.054 0.046*** 0.050**
(0.010) (0.017) (0.033) (0.045) (0.014) (0.023)
Facility resident −0.005 −0.253* −0.091***
(0.018) (0.140) (0.030)
Proxy interview −0.016* −0.050*** −0.047 −0.081 −0.054*** −0.088***
(0.009) (0.016) (0.043) (0.064) (0.014) (0.025)
Year 2012 −0.009 −0.019 −0.004 −0.002 −0.010 −0.012
(0.010) (0.016) (0.036) (0.052) (0.014) (0.024)
Year 2013 0.002 −0.012 −0.020 −0.046 −0.006 −0.030
(0.009) (0.015) (0.034) (0.049) (0.013) (0.022)
Constant 0.211*** 0.321*** 0.293** 0.251 0.302*** 0.363***
(0.035) (0.064) (0.120) (0.171) (0.051) (0.087)
F test, demographic/economic controls 1.09 (0.364) 0.75 (0.719) 6.13 (0.000) 4.03 (0.000) 16.7 (0.000) 9.51 (0.000)
F test, health controls 13.18 (0.000) 10.65 (0.000) 4.63 (0.000) 1.91 (0.092) 17.97 (0.000) 10.89 (0.000)
F test, year controls 0.76 (0.467) 0.72 (0.485) 0.20 (0.823) 0.55 (0.580) 0.25 (0.779) 0.94 (0.392)
F test, state fixed effects 3.72 (0.000) 2.54 (0.000) 2.24 (0.000) 1.73 (0.000) 1.85 (0.001) 1.07 (0.362)
Observations 2,145 955 960 561 3,105 1,516
Dependent Mean 0.033 0.044 0.343 0.431 0.129 0.187
R-squared 0.115 0.174 0.213 0.222 0.144 0.176

Notes: Standard errors are shown in parentheses below coefficient estimates; statistical significance indicated by

***

(p<0.01),

**

(p<0.05), and

*

(p<0.1).

Models also include a full set of state indicator variables (coefficients not shown). P-values are reported in parentheses below F-tests.