TABLE 2

Association Between E-Cigarette Use at Initial Assessment in 2014 and Subsequent Cigarette Use at Follow-up in 2015

Cigarette Use at Follow-up (2015)
NoYes
n (%)n (%)OR (95% CI)aOR (95% CI)b
E-cigarette use at initial assessment (2014)
 No136 (89.5)16 (10.5)Ref
 Yes87 (59.6)59 (40.4)6.17 (3.30–11.6)*5.48 (2.69–11.2)*
  • a Adjusted for gender, ethnicity, grade and highest parental education.

  • b Additionally adjusted for use of hookah, cigar, or pipe at initial evaluation.

  • * P < .005.