Table 1 Summary Statistics of Cohort.

From: Air pollution exposure and head and neck cancer incidence

Variable

Statistics median (IQR)

PM 2.5 average concentration (\({\mu g}/{\text{m}}3\))

9.51 (7.85–11.4)

Female%

50.6% (49.9%—51.3%)

Age

 

% over 65 years old

23.1% (21.5%—25.0%)

% under 18 years old

16.0% (13.7%—18.6%)

Race and ethnicity

 

White (%)

91.2% (72.5%—97.2%)

Black (%)

4.1% (1.0%—22.7%)

Hispanic (%)

3.2% (1.6%—8.5%)

Smoker%

19.8% (16.5%—22.8%)

Binge Drinking%

14.5% (11.6%—18.7%)

Median Income ($)

55,500 (46,800—66,000)

Population

24,100 (12,900—73,500)

  1. The data are aggregated at the county level. The Median and the IQRs are calculated based on the percentages for each variable per county. The Median and IQR of variable “PM 2.5 average concentration” was calculated from publicly available data16 . The Median and IQR of variable “Smoker%” and “Binge Drinking%” were calculated from publicly available data17,19 . The Median and IQR of variables “Female%”, “Age”, “Race and ethnicity”, “Median Income”, and “Population” were calculated from data available from the National Cancer Institute’s Surveillance, Epidemiology, and End Results program. (IQR: inner quartile range.)
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