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. Author manuscript; available in PMC: 2023 Nov 2.
Published in final edited form as: J Health Econ. 2016 Jun 22;49:28–45. doi: 10.1016/j.jhealeco.2016.06.004

Table 5.

Robustness across classification methods.

Panel A: Dependent variable is total prescriptions
Dependent variable:
 Total prescriptions
Classification method: >50%
 >55%
 >60%
 >65%
 >70%
 >75%
(1) (2) (3) (4) (5) (6)
Chronic*Announce −1.5667*** −1.3048*** −1.3587*** −1.4160*** −0.9821** −0.3056*
(0.509) (0.480) (0.441) (0.444) (0.387) (0.180)
Chronic*Implement 1.5100 1.4968* 0.8539 1.4074* 1.4556** 0.5967*
(0.924) (0.875) (0.798) (0.807) (0.705) (0.321)
Announce −0.1567 −0.1628 −0.1315 −0.0322 −0.0282 −0.0229
(0.159) (0.157) (0.141) (0.090) (0.082) (0.074)
Implement 0.7608*** 0.7448*** 0.7365*** 0.3230** 0.2732** 0.2794**
(0.264) (0.261) (0.235) (0.151) (0.137) (0.120)
Chronic 15.4795*** 14.2163*** 10.9330*** 12.2450*** 10.1698*** 1.7792***
(0.495) (0.470) (0.417) (0.418) (0.365) (0.159)
Announce + Chronic*Announce −1.7234*** −1.4676*** −1.4902*** −1.4481*** −1.0102*** −0.3285**
(0.526) (0.494) (0.447) (0.441) (0.383) (0.167)
Implement + Chronic*Implement 2.2707** 2.2416** 1.5903** 1.7304** 1.7288** 0.8761***
(0.957) (0.902) (0.810) (0.802) (0.698) (0.304)
Observations 40,144 40,144 40,144 40,144 40,144 40,144
Chronic: Mean prescriptions 22.14 20.62 17.46 17.28 14.63 4.22
Acute: Mean prescriptions 3.26 3.26 2.85 1.37 1.24 1.24
Total # of prescriptions 517,783 486,815 413,313 379,278 322,131 110,391
Panel B: Dependent variable is log(total prescriptions)
Dependent variable:
 Log(total prescriptions)
Classification method: >50%
 >55%
 >60%
 >65%
 >70%
 >75%
(1) (2) (3) (4) (5) (6)
Chronic*Announce −0.0543 −0.0526 −0.0777** −0.1127*** −0.0993*** −0.0643*
(0.035) (0.035) (0.037) (0.036) (0.036) (0.033)
Chronic*Implement −0.0618 −0.0638 −0.1112* −0.1060* −0.0908 −0.0481
(0.058) (0.059) (0.061) (0.060) (0.060) (0.055)
Announce −0.0179 −0.0180 −0.0159 0.0191 0.0192 0.0187
(0.026) (0.026) (0.025) (0.020) (0.020) (0.020)
Implement 0.1314*** 0.1315*** 0.1324*** 0.1278*** 0.1260*** 0.1239***
(0.042) (0.042) (0.041) (0.033) (0.032) (0.032)
Chronic 1.4447*** 1.3715*** 1.1692*** 1.4483*** 1.3089*** 0.2467***
(0.033) (0.034) (0.035) (0.034) (0.034) (0.030)
Announce + Chronic*Announce −0.0722** −0.0706** −0.0936*** −0.0936*** −0.0802** −0.0456*
(0.031) (0.031) (0.032) (0.032) (0.032) (0.028)
Implement + Chronic*Implement 0.0697 0.0677 0.0212 0.0218 0.0352 0.0758
(0.053) (0.053) (0.054) (0.054) (0.054) (0.047)
Observations 40,144 40,144 40,144 40,144 40,144 40,144
Chronic: Mean prescriptions 22.14 20.62 17.46 17.28 14.63 4.22
Acute: Mean prescriptions 3.26 3.26 2.85 1.37 1.24 1.24
Total # of prescriptions 517,783 486,815 413,313 379,278 322,131 110,391

Notes:

***

p < 0.01

**

p < 0.05

*

p < 0.1.

Clustered standard errors at the person level. Regressions are weighted and include a linear time trend t, Chronic*t, and a full set of control variables, which are not reported. Medicaid beneficiaries are included. The bottom panel presents linear combinations of the coefficients and their standard errors to show absolute announcement and implementation effects for chronic drugs. Each column represents a classification assignment rule of increasing stringency as described in Section 5.2. MCBS 2001–2006; Ages 66–74.