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Table 1 Baseline characteristics of the study population by e-cigarette use categories

From: The association between e-cigarette use and asthma among never combustible cigarette smokers: behavioral risk factor surveillance system (BRFSS) 2016 & 2017

  BRFSS 2016 & 2017
N = 402,822
E-cigarette use status
Variables Current (N = 3103) Never (N = 399,719)
Median age group, years 18–24 45–49
Women (%) 32.8 56.2
Race
 White, (%) 57.2 59.6
 Black, (%) 12.1 12.1
 Asian, (%) 7.1 7.2
 Hispanic, (%) 18.9 18.5
 Others, (%) 4.7 2.6
Education
 Less than high school diploma, (%) 9.9 11.3
 High School diploma, (%) 38.8 24.7
 Some college, (%) 51.3 64.0
Federal poverty line
 < 100%, (%) 16.2 13.2
 100–200%, (%) 19.0 18.8
 > 200%, (%) 64.8 68.0
Body Mass Index (BMI)
  < 18.5 kg/m2, (%) 3.8 1.9
 18.5 to < 25 kg/m2, (%) 44.5 33.7
 25 to < 30 kg/m2, (%) 30.7 35.1
  ≥ 30 kg/m2, (%) 21.0 29.3
Asthma, (%) 10.8 8.1