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. Author manuscript; available in PMC: 2019 Oct 19.
Published in final edited form as: Am Econ J Econ Policy. 2019 Aug;11(3):197–231. doi: 10.1257/pol.20180167

Table 8.

Patient Spillover Analysis: Relationship between Treatment Intensity and Active-Duty Patient Share of Provider, focusing on Care Delivered to Non-Active Duty Patients on the Base

(1) (2) (3) (4) (5) (6) (7) (8)
Log Relative Weighted Product Log Number of Bed Days Log Number of Procedures Incidence of Any Procedure
Panel A: Physician-Level Spillover Analysis. Outcome variable equals the indicated metric.
Active Duty Patient Share of Physician −0.031
(0.008)		 - 0.024
(0.014)		 - −0.057
(0.023)		 - −0.001
(0.008)		 -
(Omitted: 1st Quartile of Active Duty Patient Share)
2nd Quartile of Active Duty Patient Share - −0.005
(0.001)		 - 0.005
(0.003)		 - −0.020
(0.006)		 - −0.000
(0.002)
3rd Quartile of Active Duty Patient Share - −0.010
(0.003)		 - 0.009
(0.005)		 - −0.020
(0.009)		 - −0.003
(0.002)
4th Quartile of Active Duty Patient Share - −0.013
(0.006)		 - 0.010
(0.010)		 - −0.025
(0.015)		 - 0.004
(0.006)
N 522630 522630 575579 575579 506035 506035 576187 576187
Panel B: Hospital-Level Spillover Analysis. Dependent variable equals the indicated
Active Duty Patient Share of Hospital −0.002
(0.027)		 - −0.054
(0.092)		 - 0.127
(0.312)		 - −0.034
(0.071)		 -
(Omitted: 1st Quartile of Active Duty Patient Share)
2nd Quartile of Active Duty Patient Share - −0.002
(0.003)		 - −0.006
(0.006)		 - 0.006
(0.024)		 - 0.003
(0.003)
3rd Quartile of Active Duty Patient Share - −0.000
(0.004)		 - −0.003
(0.008)		 - −0.022
(0.043)		 - −0.006
(0.005)
4th Quartile of Active Duty Patient Share - −0.005
(0.005)		 - 0.003
(0.016)		 - 0.047
(0.053)		 - −0.020
(0.006)
N 522630 522630 575579 575579 506035 506035 576187 576187

Notes: robust standard errors corrected for within-physician correlation in the error term are reported in parentheses. All regressions include year and primary diagnosis code fixed effects, and controls for patient age (dummies), sex, Charlson comorbidity and paygrade (dummies). This analysis is confined to records from the direct-care setting. The active-duty patient share of the physician or hospital is calculated annually. Specifications in Panel A include physician fixed effects, thereby drawing on within-physician variation over time in active-duty patient shares. Specifications in Panel B include hospital fixed effects, thereby drawing on within-hospital variation over time in active-duty patient shares.