Effect

Odds Ratio

95% CI

Median Age (≥39 Years)

3.61

3.19 - 4.07

Race (Black vs White)

0.76

0.69 - 0.95

Smoking History (pk-yrs)

1.03

1.03 - 1.04

Median Height (≥69 inches)

1.12

0.99 - 1.26

Proppant Workers vs NHANES III

0.44

0.28 - 0.67