Table 2.

Estimated marginal utilities for colorectal resection

Variable	Estimate	Standard Error
Main effects
Travel time	−0.203	0.002***
Travel time2	0.001	0.000***
Travel time3	0.000	0.000***
Patient recommendation	−0.226	0.022***
90-day mortality ratio	−0.040	0.006***
Medical interdisciplinarity	0.168	0.032***
Medical therapy offerings	0.062	0.016***
Procedure volume	0.003	0.000***
Certification	0.316	0.013***
Professional recommendation (award)	−0.035	0.018
Hospital type: non-profit vs. private	−0.127	0.019***
Hospital type: public vs. private	0.171	0.017***
Interaction with travel time
x Age	−0.001	0.000***
x Comorbidity index	0.000	0.000
x Number of hospitals in 30 min radius	−0.004	0.000***
x Median income	0.000	0.000*
Interaction with patient recommendation
x Age	0.005	0.001***
x Comorbidity index	0.028	0.004***
x Number of hospitals in 30 min radius	0.011	0.002***
x Median income	0.000	0.000***
Interaction with 90-day mortality
x Age	0.000	0.000
x Comorbidity index	−0.001	0.001
x Number of hospitals in 30 min radius	0.001	0.001
x Median income	0.000	0.000***
Interaction with medical interdisciplinarity
x Age	−0.003	0.002
x Comorbidity index	0.014	0.007*
x Number of hospitals in 30 min radius	−0.016	0.003***
x Median income	0.000	0.000***
Interaction with medical therapy offering
x Age	0.001	0.001
x Comorbidity index	−0.002	0.003
x Number of hospitals in 30 min radius	−0.005	0.002**
x Median income	0.000	0.000
Interaction with procedure volume
x Age	0.000	0.000
x Comorbidity index	0.000	0.000***
x Number of hospitals in 30 min radius	0.000	0.000***
x Median income	0.000	0.000***
Interaction with certification
x Age	−0.001	0.001
x Comorbidity index	0.009	0.002***
x Number of hospitals in 30 min radius	0.003	0.001*
x Median income	0.000	0.000***
Interaction with professional recommendation (award)
x Age	−0.009	0.001***
x Comorbidity index	0.017	0.003***
x Number of hospitals in 30 min radius	−0.006	0.002**
x Median income	0.000	0.000***
			As % of average travel time
WTT (recommendation)	−0.384		2.0%
WTT (90-day mortality)	−0.232		1.2%
WTT (medical interdisciplinarity)	0.180		0.9%
WTT (medical therapy offering)	0.129		0.7%
WTT (procedure volume)	1.800		9.3%
WTT (certification)	1.820		9.4%
Number of patients	66,645
Number of hospitals	862
Prob > chi2	0.000
Pseudo R2	0.587

Notes: Multinomial logit model for colorectal resection patients treated in 2017 and 2018. Coefficients represent marginal utilities. Coefficients of the covariates number of beds, university hospital status and their interactions with patient features are not reported here but available on request along with travel time² and travel time³ and hospital type interactions with patient features

*** p < 0.001; ** p < 0.01; * p < 0.05