Patterns of Sociodemographic and Clinicopathologic Characteristics of Stages II and III Colorectal Cancer Patients by Age: Examining Potential Mechanisms of Young-Onset Disease

Table 3

County-level socioeconomic indicators of 6,862 patients diagnosed with stages II and III colorectal cancer, 1990–2010, by age at diagnosis.

	⁢Age < 50 years; ⁢ ()		⁢Age 50–69 years; ⁢ ( = 3,018)		⁢Age ≥ 70 years; ⁢ ( = 2,973)
		Weighted^1%		Weighted^1%		Weighted^1%
Per capita income
<$32,000	133	15.4	665	23.2	718	24.8
$32,000–50,000	575	66.0	1909	62.8	1818	58.1
>$50,000	163	18.6	444	14.0	437	17.1
Median	39637		38380		38337
Median household income^2
<$50,000	176	18.8	736	24.2	691	22.8
$50,000–75,000	558	67.6	1870	63.1	1838	61.9
>$75,000	137	13.6	412	12.7	444	15.3
Median	57755		56931		57745
% living in poverty
<10	214	32.6	619	30.0	626	36.5
10–19	409	55.5	1165	54.4	1037	52.9
≥20	99	11.9	387	15.6	299	10.7
Median	12.8		12.7		11.9
% less than high school
<10	378	37.3	1471	43.3	1614	48.7
10–19	377	45.9	1155	39.8	1042	36.4
≥20	116	16.8	392	16.9	317	14.8
Median	12.1		11.4		10.2
Unemployment rate (%)
<5	273	30.6	976	32.6	1090	36.5
5–9	437	45.7	1550	43.1	1499	45.2
≥10	161	23.7	492	24.3	384	18.3
Median	5.8		5.7		5.3
Total physicians per 100,000
<200	209	26.7	793	30.6	801	28.4
200–400	473	52.3	1560	48.4	1440	48.6
≥400	189	21.0	665	21.0	732	23.0
Median	268.2		268.3		268.4
Total gastroenterologists per 100,000^3
<3	201	30.3	625	32.0	581	32.0
3–5	310	41.7	957	42.6	845	38.1
>5	211	28.0	589	25.5	536	29.9
Median	3.9		3.7		3.7

.
Note. Cutpoints based on approximate tertiles.
¹Proportions weighted by sampling fraction.
²Adjusted to 2010 dollars.
³Poverty and total number of gastroenterologists not collected in 1990/91.