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Table 1 Baseline unweighted characteristics of the NHIS cohort

From: Air pollution and mortality in a large, representative U.S. cohort: multiple-pollutant analyses, and spatial and temporal decompositions

VariableNHIS Cohort
Total number in cohort635,539
Total Deaths106,385
Cardiopulmonarya43,195
Sex
 % Male44.54
 % Female55.46
 Age yrs. (mean)45.3
Race/Ethnicity
 % Non-Hispanic White67.51
 % Hispanic14.08
 % Non-Hispanic Black14.01
 % All other/unknown4.40
Income (inflation adjusted to 2015)
 % $ 0–35,00038.04
 % $ 35–50,00015.47
 % $ 50–75,00018.79
 % $ 75,000+27.71
Marital Status
 % Married49.57
 % Divorced14.06
 % Separated3.59
 % Never Married24.31
 % Widowed8.47
Education
 % < High School grad18.63
 % High School grad30.37
 % Some College27.10
 % College grad15.03
 % > College grad8.87
Urban/Rural
 % Urban77.64
 % Rural22.36
Census Region
 % Northeast18.08
 % Midwest23.71
 % South35.74
 % West22.46
BMI
 % < 207.28
 % 20–2536.37
 % 25–3033.80
 % 30–3514.43
 % > 358.12
Smoking
 % Never53.76
 % Current23.90
 % Former22.34
  1. aCardiopulmonary mortality is based on International Statistical Classification of Diseases, Injuries, and Causes of Death, Tenth Revision (ICD-10) and includes: cardiovascular disease (I00-I09, I11, I13, I20-I51), cerebrovascular disease (I60-I69), chronic lower respiratory disease (J40-J47), and influenza and pneumonia (J09-J18)