Table 3.

Socio-demographic and tumor-related factors associated with being reported by multiple (mult) vs. single institutions for patients not reported to any integrated health system (IHS), by invasive cancer site, Greater Bay Area of California, 2010–11.

	Breast cancer		Prostate cancer		Lung cancer		Pancreatic cancer		All invasive cancers
	n (mult/single)	OR (95% CI)	n (mult/single)	OR (95% CI)	n (mult/single)	OR (95% CI)	n (mult/single)	OR (95% CI)	n (mult/single)	OR (95% CI)
Age at diagnosis
75+	172/1046	Reference	119/1123	Reference	238/1517	Reference	84/404	Reference	1433/9728	Reference
65–74	321/1015	1.9 (1.5–2.2)	337/1733	1.9 (1.5–2.4)	221/960	1.5 (1.2–1.8)	98/201	2.1 (1.5–3.1)	1909/7661	1.8 (1.6–1.9)
55–64	480/1148	2.5 (2.1–2.9)	408/1336	3.0 (2.3–3.9)	207/566	2.3 (1.9–2.9)	79/137	2.5 (1.6–3.8)	2331/7064	2.3 (2.1–2.5)
45–54	545/984	3.4 (3.0–3.8)	134/363	3.5 (2.6–4.8)	99/202	3.0 (2.2–4.0)	38/78	1.9 (1.2–3.1)	1650/4265	2.7 (2.5–2.9)
0–44	297/485	3.7 (3.2–4.2)	4/21		28/47	3.7 (2.2–6.1)	10/23		1161/2788	3.2 (2.9–3.5)
Sex
Male		N/A	1002/4576	N/A	416/1577	Reference	159/404	Reference	3747/15694	Reference
Female	1815/4678				377/1715	0.9 (0.8–1.0)	150/439	1.0 (0.8–1.4)	4719/15812	1.2 (1.2–1.3)
Race/ethnicity
NH White	1061/2893	Reference	684/2670	Reference	419/2016	Reference	176/475	Reference	4825/18921	Reference
NH Black	97/282	0.8 (0.6–1.1)	65/306	0.8 (0.6–1.1)	71/282	1.0 (0.8–1.4)	34/60	1.7 (1.0–2.9)	532/1944	1.0 (0.9–1.1)
Hispanic	240/519	1.0 (0.8–1.2)	88/585	0.7 (0.6–0.9)	61/262	1.1 (0.8–1.5)	36/102	1.1 (0.7–1.8)	1114/3892	1.0 (1.0–1.1)
NH Asian/PI	411/922	1.0 (0.9–1.2)	153/663	1.1 (0.9–1.3)	240/713	1.6 (1.3–1.9)	62/194	0.9 (0.7–1.3)	1953/5999	1.2 (1.1–1.3)
Other/Unknown	6/62	0.2 (0.1–0.5)	12/352	0.2 (0.1–0.3)	2/15	0.4 (0.1–2.0)	1/12	0.2 (0.0–1.3)	42/750	0.2 (0.2–0.3)
AJCC stage at diagnosis
I	809/2491	Reference	177/1444	Reference	145/638	Reference	29/103	Reference	2367/11025	Reference
II	627/1353	1.3 (1.2–1.5)	609/2207	2.4 (2.0–2.9)	54/231	1.0 (0.7–1.5)	113/168	2.3 (1.4–3.7)	2077/6148	1.8 (1.6–1.9)
III	286/447	1.7 (1.5–2.1)	131/279	3.3 (2.5–4.3)	165/542	1.3 (1.0–1.7)	35/81	1.3 (0.7–2.4)	1556/3774	2.0 (1.9–2.2)
IV	77/231	1.0 (0.7–1.3)	75/296	2.5 (1.8–3.4)	419/1666	1.0 (0.8–1.3)	129/417	1.1 (0.7–1.7)	1678/5276	1.7 (1.6–1.8)
Unknown	16/156	0.4 (0.2–0.6)	10/350	0.3 (0.2–0.5)	10/215	0.2 (0.1–0.4)	3/74	0.2 (0.0–0.6)	788/5823	0.8 (0.7–0.9)
Neighborhood socioeconomic status	(quintiles)
5, highest	850/2185	Reference	581/2273	Reference	309/1240	Reference	143/331	Reference	3866/14022	Reference
4	426/1157	0.9 (0.8–1.1)	210/1021	0.8 (0.7 1.0)	180/785	0.9 (0.7–1.1)	76/212	0.8 (0.6–1.1)	1950/7354	0.9 (0.9–1.0)
3	282/708	1.0 (0.8–1.2)	114/607	0.8 (0.6 1.0)	135/576	0.8 (0.7–1.1)	45/143	0.7 (0.4–1.0)	1303/4888	0.9 (0.8–1.0)
2	148/396	0.9 (0.7–1.1)	61/406	0.7 (0.5 0.9)	87/405	0.8 (0.6–1.0)	27/100	0.5 (0.3–0.9)	802/3188	0.8 (0.8–0.9)
1, lowest	109/232	1.0 (0.8–1.4)	36/269	0.7 (0.4 1.0)	82/286	1.0 (0.8–1.4)	18/57		545/2054	0.9 (0.8–1.0)
Insurancea
Private/military insurance	1018/2408	Reference	577/2125	Reference	249/840	Reference	119/250	Reference	4107/12954	Reference
Public insurance	756/2181	1.4 (1.2–1.6)	402/2274	1.0 (0.8 1.2)	502/2335	1.0 (0.8–1.2)	171/543	0.9 (0.7–1.3)	4059/17476	1.0 (1.0–1.1)
No insurance	12/37	0.9 (0.5–1.8)	11/32	1.2 (0.6 2.4)	11/36	0.9 (0.5–1.9)	13/9	4.9 (1.8–12.8)	109/350	1.0 (0.8–1.3)
Unknown	29/52	1.6 (1.0–2.7)	12/145	0.5 (0.3 0.9)	31/81	2.3 (1.4–3.6)	6/41	1.1 (0.4–2.9)	191/726	1.2 (1.0–1.4)

NH = non-Hispanic; PI – Pacific Islander.

Logistic regression models were adjusted for all variables presented on table. Categories were combined as needed and as shown to facilitate regression model convergence. Patients included were not seen at any integrated health system such as Kaiser Permanente or the Veterans Affairs Administration.

Bold values indicate p < 0.05.

^aPublic insurance included Medicaid and other government-assisted programs; private insurance included health maintenance organizations, preferred provider organizations, managed care not otherwise specified, and military care.