TABLE 3

Association Between E-Cigarette Use at Initial Assessment in 2014 and Subsequent Cigarette Use at Follow-up in 2015 by Indication of Susceptibility to Smoking at Initial Evaluation

Not SusceptibleSusceptible
Cigarette Use at Follow-up (2015)Cigarette Use at Follow-up (2015)
No n (%)Yes n (%)OR (95% CI)aNo n (%)Yes n (%)OR (95% CI)a
E-cigarette use at initial assessment (2014)
 No115 (94.3)7 (5.7)Ref19 (67.9)9 (32.1)Ref
 Yes60 (63.8)34 (36.2)9.69 (4.02–23.4)27 (52.9)24 (47.1)2.12 (0.79–5.74)
  • P interaction = .025. Ref, referent.

  • a Adjusted for gender, ethnicity, grade, and highest parental education.