Table 2.

Two-part Model Estimates of Days From Diagnosis to Treatment Initiation for Colorectal Cancer Patients

	Treatment Within 2 days of Diagnosis							Log of Days to Treatment if > 2 days
	Kentucky			PA, OH, NC				Kentucky			PA, OH, NC
	Coef.	Std. Err.		Coef.	Std. Err.			Coef.	Std. Err.		Coef.	Std. Err.
Female	−0.042	0.0459		0.007	0.0154			−0.123	0.1033		−0.053	0.0366
Ages 66–73	−0.031	0.0541		0.013	0.0197			−0.086	0.1212		0.064	0.0462
Ages 81+	−0.032	0.0567		0.031	0.0181	*		−0.103	0.1254		−0.080	0.0434	*
White	0.209	0.2113		0.097	0.0458	**		0.271	0.4040		0.116	0.1038
Rural	−0.080	0.0905		0.032	0.0178	*	++	0.215	0.2004		0.010	0.0435
Year of Diagnosis = 2006	−0.035	0.0556		−0.039	0.0186	**		0.038	0.1262		−0.081	0.0449	*
Year of Diagnosis = 2007	−0.046	0.0554		−0.032	0.0190	*		−0.243	0.1225	**	−0.032	0.0456
Tumor size: < 2 cm	0.029	0.0849		0.039	0.0269			0.019	0.1849		0.335	0.0650	***
Tumor size: 2 cm – 4 cm	−0.086	0.0508	*	−0.062	0.0170	***		0.191	0.1122	*	0.211	0.0398	***	+
Tumor Grade = Well Differentiated	0.109	0.1120		0.114	0.0306	***		−0.095	0.2831		0.091	0.0775
Tumor Grade = Moderately Differentiated	−0.066	0.0579		−0.003	0.0199			0.081	0.1323		0.119	0.0473	**
ACE Severity = Low and None	−0.224	0.0752	***	−0.156	0.0260	***		0.045	0.1576		0.183	0.0602	***
ACE Severity = Mild	−0.110	0.0549	**	−0.118	0.0181	***		0.001	0.1285		0.164	0.0442	***
ACE Severity = Moderate	−0.014	0.0671		−0.082	0.0224	***		0.021	0.1578		0.079	0.0550
Facility bed size: < 50	−0.001	0.1667		0.119	0.0510	**		−0.508	0.3491		0.321	0.1316	**	++
Facility bed size: 50 – 99	0.105	0.1200		0.063	0.0407			−0.225	0.2643		0.269	0.0998	***	+
Facility bed size: 100 – 199	0.165	0.0850	*	0.005	0.0249		++	−0.503	0.2011	**	0.111	0.0598	*	+++
COC Status = None	0.040	0.0612		−0.019	0.0207			0.109	0.1334		−0.113	0.0488	**
Public Facility	−0.190	0.1112	*	−0.009	0.0786			1.053	0.2335	***	0.015	0.2060		+++
Not-for-Profit Facility	−0.187	0.0747	**	−0.090	0.0722			0.679	0.1862	***	0.040	0.1889		++
Facility surgery vol. = Quartile 1	−0.030	0.1032		0.025	0.0317			0.031	0.2254		−0.194	0.0746	***
Facility surgery vol. = Quartile 2	0.059	0.0988		0.122	0.0242	***		0.337	0.2225		−0.152	0.0588	***	+++
Facility surgery vol. = Quartile 3	−0.118	0.1055		0.032	0.0216			0.349	0.2230		0.026	0.0501
Radiation treatment available at facility	0.076	0.0955		−0.025	0.0214			0.250	0.2199		0.017	0.0531
Surgeon volume quartiles 1–3	0.028	0.0611		0.086	0.0187	***		0.027	0.1285		−0.118	0.0428	***
Tumor Stage I	−0.019	0.0643		−0.029	0.0212			0.266	0.1373	*	0.144	0.0497	***
Tumor Stage II	0.020	0.0533		−0.027	0.0180			0.190	0.1187		0.020	0.0428
Chemotherapy within 30 days of treatment start	−0.098	0.0926		−0.037	0.0429			0.203	0.2026		−0.146	0.0971		++
Radiation within 30 days of treatment start	−0.186	0.1300		−0.230	0.0488	***		0.080	0.2592		0.399	0.1048	***
Distance = Quartile 1	0.001	0.0804		−0.033	0.0249			0.305	0.1866		−0.186	0.0600	***	++
Distance = Quartile 2	0.040	0.0832		−0.039	0.0246			0.212	0.1927		−0.199	0.0587	***	++
Distance = Quartile 3	0.027	0.0653		−0.014	0.0239			−0.058	0.1560		−0.138	0.0571	**
Diagnosis and Treatment at same Facility	0.286	0.0640	***	0.214	0.0211	***		−0.323	0.1249	***	−0.294	0.0456	***
Constant	0.188	0.2689		0.197	0.0969	**		1.698	0.5838	***	3.025	0.2418	***	++

^*P < .1,

^**P < .05,

^***P < .01

⁺Significant difference between coefficients, P = .10

⁺⁺Significant difference between coefficients, P = .05

⁺⁺⁺Significant difference between coefficients, P = .01