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Table 2 Comparison of Age-Adjusted Lung Cancer Incidence Rates per 100,000 from 1991 to 2010 in Metropolitan and Nonmetropolitan Utah Counties by Stage and Sex

From: A statewide investigation of geographic lung cancer incidence patterns and radon exposure in a low-smoking population

  Metropolitan Nonmetropolitan Model 1: Not adjusted for smoking Model 2: Adjusted for smoking
  Rate Count Person-years Rate Count Person-years P-value P-value
Overall incidence 29.7 8302 40,106,205 34.8 1630 5,297,867 <.0001* 0.19
Stage
 Localized 5.2 1462 40,106,205 6.0 285 5,297,867 0.02* 0.83
 Regional 6.3 1792 40,106,205 7.2 336 5,297,867 0.04* 0.15
 Distant 15.4 4317 40,106,205 16.7 784 5,297,867 0.02* 0.02*
 Unstaged 2.7 731 40,106,205 4.9 225 5,297,867 < 0.0001* < 0.0001*
Sex
 Male 39.5 4963 20,073,510 45.7 1004 2,662,232 < 0.0001* 0.24
 Female 21.9 3339 20,032,695 25.4 626 2,635,635 0.0003* 0.46
  1. Rates adjusted to the 2000 United States standard population. Person-years shown here are not age-adjusted. *Indicate p-values < 0.05 are significant