Effects of being uninsured or underinsured and living in extremely poor neighborhoods on colon cancer care and survival in California: historical cohort analysis, 1996—2011

Table 2 Stratification, demographic, payer, investigation, staging and care characteristics of colon cancer patients diagnosed between 1996 and 2000 and followed until 2011

	Sample	%		Sample	%
Stratification Characteristics
Places			Poverty prevalence (%) in neighborhood
Large urban	2,100	33.3	< 5	2,100	33.3
Smaller urban	2,100	33.3	5–29	2,100	33.3
Rural	2,100	33.3	≥ 30	2,100	33.3
Demographic Characteristics
Age at diagnosis, y			Gender
25–59	1,347	21.4	Female	3,291	52.2
60–69	1,372	21.8	Male	3,009	47.8
70–79	1,919	30.5
≥ 80	1,662	26.3
Race/ethnicity			Primary Payers
Non-Hispanic white	4,199	66.7	Medicare	2,790	44.3
Non-Hispanic black	688	10.9	Private insurers	2,736	43.4
Hispanic	810	12.9	Medicaid	284	4.5
API or American Indian	603	9.6	Uninsured	490	7.8
Investigation and Staging Characteristics
Number of regional lymph nodes examined			Stage at diagnosis^a
< 6	2,199	37.5	I	1,300	22.5
6–10	1,513	25.8	II	1,882	32.6
11–14	874	14.9	III	1,392	24.1
≥ 15	1,278	21.8	IV	1,202	20.8
Missing data	436	6.9	Missing data	524	8.3
Cancer Care Characteristics
Received surgery^b	5,506	88.7	Received chemotherapy	1,751	28.3
Missing data	90	1.4	Missing data	115	1.8
Wait time from diagnosis to surgery, d			Wait time after surgery for chemotherapy, d
< 14	3,960	71.7	< 14	194	12.0
14–29	1,031	18.7	14–29	415	25.7
30–59	408	7.4	30–59	733	45.3
≥ 60	120	2.2	60–89	159	9.8
Missing data	781	12.4	≥ 90	116	7.2
			Missing data	134	7.6

ISSN: 1471-2458