TABLE 1

Association Between Selected Demographic Characteristics and Past or Current E-cigarette and Cigarette Use: Southern California CHS

Total, N (%)Never Users, n (%)Past Users, n (%)Current Users, n (%)OR (95% CI)a
Past Versus Never E-cigarette UsersCurrent Versus Never E-cigarette Users
E-cigarette use
 Total, N (%)20841585 (76.0)299 (14.4)200 (9.6)
 Gender
  Female1033 (49.6)825 (52.0)130 (43.5)78 (39.0)RefRef
  Male1051 (50.4)760 (48.0)169 (56.5)122 (61.0)1.46 (1.13–1.89)1.76 (1.29–2.39)
 Race/ethnicity
  Hispanic white1078 (51.7)819 (51.7)158 (52.8)102 (51.0)RefRef
  Non-Hispanic white731 (35.1)543 (34.3)106 (35.5)79 (39.5)1.00 (0.72–1.40)1.16 (0.80–1.69)
  Other275 (13.2)223 (14.0)35 (11.7)19 (9.5)0.98 (0.64–1.51)0.60 (0.34–1.05)
 Family income (2002–2003)
  <$30 000462 (22.2)338 (21.3)76 (25.4)48 (24.0)RefRef
  $30 000–$74 000605 (29.0)457 (28.8)86 (28.8)62 (31.0)0.85 (0.57–1.26)0.77 (0.49–1.22)
  ≥$75 000656 (31.5)509 (32.1)90 (30.1)57 (28.5)0.98 (0.63–1.52)0.65 (0.38–1.09)
  Missing361 (17.3)281 (17.7)47 (15.7)33 (16.5)0.84 (0.53–1.34)0.72 (0.41–1.25)
 Education (highest parental; 2002–2003)
  <12th grade386 (18.5)296 (18.7)59 (19.7)31 (15.5)RefRef
  12th grade312 (15.0)226 (14.3)57 (19.1)29 (14.5)1.33 (0.86–2.05)1.31 (0.75–2.31)
  Some college718 (34.5)535 (33.7)106 (35.4)77 (38.5)0.97 (0.62–1.49)1.43 (0.84–2.43)
  College degree258 (12.4)199 (12.6)32 (10.7)27 (13.5)0.79 (0.45–1.40)1.57 (0.80–3.05)
  Some graduate school247 (11.8)203 (12.8)25 (8.4)19 (9.5)0.60 (0.32–1.10)1.08 (0.53–2.22)
  Missing163 (7.8)126 (7.9)20 (6.7)17 (8.5)0.83 (0.43–1.62)1.62 (0.77–3.42)
Cigarette use
 Total, N (%)20841694 (81.3)271 (13.0)119 (5.7)
 Gender
  Female1033 (49.6)851 (50.2)126 (46.5)56 (47.1)RefRef
  Male1051 (50.4)843 (49.8)145 (53.5)63 (52.9)1.17 (0.90–1.52)1.18 (0.81–1.73)
 Race/ethnicity
  Hispanic white1078 (51.7)859 (50.7)156 (57.6)63 (52.9)RefRef
  Non-Hispanic white731 (35.1)604 (35.7)81 (29.9)46 (38.7)0.89 (0.63–1.27)0.99 (0.62–1.58)
  Other275 (13.2)231 (13.6)34 (12.6)10 (8.4)0.91 (0.59–1.40)0.65 (0.32–1.33)
 Family income (2002–2003)
  <$30 000462 (22.2)353 (20.8)78 (28.8)31 (26.1)RefRef
  $30 000–$74 000605 (29.0)493 (29.1)69 (25.5)43 (36.1)0.75 (0.50–1.12)0.86 (0.50–1.50)
  ≥$75 000656 (31.5)554 (32.7)70 (25.8)32 (26.9)0.87 (0.55–1.38)0.65 (0.34–1.24)
  Missing361 (17.3)294 (17.4)54 (19.9)13 (10.9)0.80 (0.51–1.26)0.44 (0.20–0.98)
 Education (highest parental; 2002–2003)
  <12th grade386 (18.5)305 (18.0)63 (23.3)18 (15.1)RefRef
  12th grade312 (15.0)244 (14.4)49 (18.1)19 (16.0)1.08 (0.70–1.68)1.47 (0.73–2.96)
  Some college718 (34.5)580 (34.2)86 (31.7)52 (43.7)0.78 (0.50–1.21)1.55 (0.80–3.02)
  College degree258 (12.4)221 (13.1)25 (9.2)12 (10.1)0.61 (0.33–1.11)1.09 (0.45–2.64)
  Some graduate school247 (11.8)218 (12.9)19 (7.0)10 (8.4)0.49 (0.26–0.93)0.95 (0.38–2.41)
  Missing163 (7.8)126 (7.4)29 (10.7)8 (6.7)1.37 (0.75–2.50)2.13 (0.76–5.95)
  • Ref, reference.

  • a Adjusted for community and coadjusted for gender, ethnicity, income, and highest parental education, as appropriate.