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. Author manuscript; available in PMC: 2021 Apr 10.
Published in final edited form as: Sci Total Environ. 2020 Jan 7;712:136512. doi: 10.1016/j.scitotenv.2020.136512

Table 5.

Logistic regression model of skin and liver neoplasia prevalence with both fish age and sampling site (Superior Bay, St. Louis Bay, and Lower River combined versus Upper River) as factors, with parameter estimates, Z scores, and associated p-values. For skin neoplasia, the full model p = 0.002. For liver neoplasia, the full model p <0.001.

Tissue Parameter Estimate (±SE) Z p-value
skin Constant −5.01 (0.68) −7.36 <0.001
Age 0.19 (0.06) −3.31 <0.001
Site (Combined) 0.54 (0.55) 0.98 0.33
liver Constant −5.29 (0.70) −7.58 <0.001
Age 0.22 (0.06) 3.83 <0.001
Site (Combined) 0.45 (0.56) 0.81 0.417