Table 7.

logistic regression results for main effects and interactions of neighborhood poverty and primary payer by gender on receipt of optimum treatment^aamong colon cancer patients with stage III disease

	Women			Men
Predictor variables	No.b	OR	(95%CI)	No.b	OR	(95%CI)
Single predictor models
Neighborhood poverty
< 5% poor	133	1.00		133	1.00
5-29% poor	131	0.53	(0.32, 0.88)	115	0.98	(0.58, 1.66)
≥ 30% poor	109	0.55	(0.32, 0.95)	103	0.88	(0.51, 1.50)
Primary payer
Uninsured	29	1.00		27	1.00
Medicaid	24	0.84	(0.26, 2.72)	15	0.67	(0.19, 2.42)
Medicare	131	0.52	(0.21, 1.30)	119	1.47	(0.59, 3.66)
Private	189	0.86	(0.37, 2.00)	190	1.06	(0.46, 2.44)
Full models
Neighborhood poverty
< 5% poor	133	1.00		133	1.00
5-29% poor	131	0.53	(0.32, 0.89)	115	0.28	(0.10, 0.77)
≥ 30% poor	109	0.55	(0.31, 0.98)	103	0.08	(0.01, 0.47)
Primary payer
Uninsured	29	1.00		27	1.00
Medicaid	24	0.82	(0.25, 2.68)	15	0.41	(0.10, 1.70)
Medicare	131	0.47	(0.19, 1.21)	119	0.22*	(0.04, 1.20)
Private	189	0.72	(0.30, 1.72)	190	0.27*	(0.07, 1.06)
Poverty by payer	Null Interaction removed			351	1.75	(1.19, 2.57)
Poverty by payer interaction among men
	> 30% poor			< 30% poor
	No.b	OR	(95% CI)	No.b	OR	(95% CI)
Primary payer
Uninsured	10	1.00		17	1.00
Medicaid	9	3.03	(0.43, 21.33)	6	0.22	(0.03, 1.69)
Medicare	37	13.33	(2.42, 73.50)	82	0.40	(0.10, 1.60)
Private	47	3.69*	(0.81, 16.84)	143	0.41	(0.11, 1.51)

Notes. OR = odds ratio, CI = confidence interval. All effects were age-adjusted across these categories: 25–59, 60–69, 70–79 and 80 or older.

^a Optimum treatment: received colon cancer-directed surgery within 30 days of diagnosis and received adjuvant chemotherapy within 45 days of surgery.

^b Number of incident colon cancer cases.

* p < .10.