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Table 1 Descriptive statistics of study variables

From: Permitted water pollution discharges and population cancer and non-cancer mortality: toxicity weights and upstream discharge effects in US rural-urban areas

Dependent Variable Mean Standard Deviation
Total age-adjusted mortality rate per 100,000 for non- cancer causes 658.3 112.2
Age-adjusted all-cancer mortality rate per 100,000 197.6 29.4
Age-adjusted kidney disease mortality rate per 100,000 17.6 7.3
Independent Variables   
Log of non-weighted, onsite non-carcinogenic discharges 2.59 2.82
Log of non-weighted, onsite carcinogenic discharges 0.22 0.89
Log of toxicity-weighted, onsite non-carcinogenic discharges 5.69 4.82
Log of toxicity-weighted, onsite carcinogenic discharges 2.36 5.15
Log of toxicity-weighted, local and upstream non- carcinogenic discharges 1.29 1.90
Log of toxicity-weighted, local and upstream carcinogenic discharges 1.58 2.80
Covariates   
Percent adults aged 25+ with college or more education 16.5 7.8
Adult smoking rate 21.8 4.3
Adult obesity rate 28.9 3.7
Primary care physicians per 1,000 population 0.4 0.3
Poverty rate 15.1 6.2
Percent African American 8.9 14.6
Percent Native American 1.6 6.4
Percent Hispanic 6.2 12.0
Percent Asian American 0.8 1.6
Percent other non-White race 2.6 4.8
Percent White 84.7 16.1
Percent metropolitan county 35.2 47.8
Percent non-metropolitan, adjacent county 46.7 49.9
Percent non-metropolitan, non-adjacent 18.1 38.5