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

Table 4

Distribution of lung cancer clusters by location of industrial facilities according to Lawson and Waller score test.

Industrial facility	ZIP code	Test statistic	𝑃-value (9 999 simulation runs)	Nominal 𝑃-value
Delphi Saginaw Steering Systems	48601	9.47265	.000100*	.000000
Means Industries Inc Saginaw Facility	48601	8.25636	.000100*	.000000
Safety-Kleen Systems	48601	10.92670	.000100*	.000000
DOW Company Midland	48640	−9.52227	1.000000	1.000000
Quantum Composites Inc.	48642	−9.11357	1.000000	1.000000
Thompson Marine Products Inc.	48655	1.441800	.169400	.074679
Marathon Petroleum Co LLC Bay City MI Terminal	48706	7.625880	.000100*	.000000
Straits Wood Treating	48706	7.746250	.000100*	.000000
General Motors Corp Power Train Bay City	48708	7.564160	.000100*	.000000
Essroc Cement Corp.	48732	6.538380	.000100*	.000000

𝛼=0.01; number of Monte Carlo simulations = 9 999, *statistically significant