A Critical Assessment of Geographic Clusters of Breast and Lung Cancer Incidences among Residents Living near the Tittabawassee and Saginaw Rivers, Michigan, USA

Table 3

The odds ratio of having a breast/lung cancer and distribution of cancer incidence rates by ZIP codes, 1989–2002.

ZIP code	Cancer cases		Population		Incidence rate		Confidence interval		Odds Ratio		Confidence interval
	(age 15 years and over)		(age 15 years and over)		per 10 K		for % rate				for Odds Ratio
	Breast	Lung	Female	Total	Breast	Lung	Breast	Lung	Female	Total	Breast	Lung
48415	92	86	3827	7467	240	115	2.4±0.48	1.15±0.24	1.33	1.14	0.944–1.876	0.813–1.593
48457	69	77	3266	6532	211	118	2.11±0.49	1.18±0.26	1.17	1.16	0.811–1.677	0.825–1.644
48601	436	632	19205	34336	227	184	2.27±0.21	1.84±0.14	1.25	1.83^1	0.939–1.677	1.394–2.405
48602	324	388	13344	25231	243	154	2.43±0.26	1.54±0.15	1.34	1.53^1	1.000–1.807	1.153–2.107
48603	516	440	17399	32175	297	137	2.97±0.25	1.37±0.13	1.65^1	1.35^1	1.238–2.202	1.026–1.787
48604	128	106	4996	9491	256	112	2.56±0.44	1.12±0.21	1.42^1	1.1	1.026–1.967	0.798–1.524
48611	52	50	2375	4634	219	108	2.19±0.59	1.08±0.3	1.21	1.07	0.820–1.783	0.727–1.560
48616	62	68	3072	6028	202	113	2.02±0.5	1.13±0.27	1.11	1.11	0.767–1.614	0.782–1.578
48618	58	51	2074	4087	280	125	2.8±0.71	1.25±0.34	1.55^1	1.23	1.064–2.270	0.844–1.804
48623	87	60	4409	9883	197	61	1.97±0.41	0.61±0.15	1.09	0.60^2	0.769–1.538	0.414–0.858
48626	45	53	2324	4528	194	117	1.94±0.56	1.17±0.31	1.07	1.16	0.713–1.596	0.794–1.685
48640	421	334	13339	25955	316	129	3.16±0.3	1.29±0.14	1.76^1	1.27	1.316–2.355	0.960–1.688
48642	178	146	12610	23949	141	61	1.41±0.21	0.61±0.1	0.77	0.60^2	0.566–1.056	0.440–0.815
48650	71	83	3062	6093	232	136	2.32±0.53	1.36±0.29	1.28	1.35	0.893–1.841	0.961–1.893
48655	62	72	2651	5195	234	139	2.34±0.58	1.39±0.32	1.29	1.37	0.891–1.877	0.968–1.947
48657	84	92	3222	6463	261	142	2.61±0.55	1.42±0.29	1.45^1	1.41^1	1.019–2.051	1.011–1.966
48706	407	573	17269	32814	236	175	2.36±0.23	1.75±0.14	1.3	1.74^1	0.974–1.745	1.320–2.282
48708	285	372	11973	22896	238	162	2.38±0.27	1.62±0.16	1.32	1.61^1	0.977–1.775	1.218–2.135
48732	143	142	5201	9640	275	147	2.75±0.44	1.47±0.24	1.53^1	1.46^1	1.108–2.105	1.072–1.989
48734	110	59	3265	5995	337	98	3.37±0.62	0.98±0.25	1.88^1	0.97	1.349–2.630	0.673–1.399
48880	86	69	2594	8090	332	85	3.32±0.69	0.85±0.2	1.85^1	0.84	1.307–2.625	0.590–1.195
48883	52	57	2861	5623	182	101	1.82±0.49	1.01±0.26	1	1	reference	reference

¹significant positive association between exposure and outcome; ²significant negative association between exposure and outcome.