Table A.6.

Yearly Changes in Distance Travelled

	(1) ln(distance+1)	(2) ln(distance+1)	(3) ln(distance+1)
CalPERS × 2009	−0.0206 (0.0310)	−0.0215 (0.0234)	−0.0153 (0.0236)
CalPERS × 2010	−0.0297 (0.0293)	−0.0134 (0.0233)	−0.0155 (0.0240)
CalPERS × 2012	0.00356 (0.0293)	−0.0111 (0.0274)	−0.0102 (0.0288)
CalPERS × 2013	−0.0514 (0.0402)	−0.0630 (0.0402)	−0.0441 (0.0361)
CalPERS	0.0588 (0.0920)	−0.0225 (0.0331)	−0.0264 (0.0336)
2009	0.0233 (0.0245)	−0.00589 (0.0169)	0.0829*** (0.00955)
2010	0.0485** (0.0207)	0.0168 (0.0126)	0.0556*** (0.00774)
2012	−0.00875 (0.0112)	0.00278 (0.0103)	0.343*** (0.0132)
2013	−0.000598 (0.0252)	0.0222 (0.0227)	0.778*** (0.00893)
Observations	320,826	320,826	320,826
R2	0.004	0.130	0.133
Mean CalPERS 2011 distance	33	33	33
Fixed Effects		HRR	HRR × year

This table presents the difference-in-differences results from equation 1 and uses the distance between the patient’s zip code and the provider’s zip code as the dependent variable. All columns include controls for patient demographics (age, gender, Charlson risk score), the primary colonoscopy procedure code, and month. Column 2 adds patient HRR fixed effects and column 3 adds year by patient HRR interactions. Robust standard errors clustered at the provider level are in parentheses.

^***p<0.01,

^**p<0.05,

^*p<0.1.