TABLE 1

Baseline Characteristics for the Matched Longitudinal Sample (N = 808)

Variable Value
Sex, No. (%)
 Male380 (47.0)
 Female428 (53.0)
Agea, mean (SD)15.04 (0.90)
SESb, mean (SD)5.92 (1.38)
Race/ethnicityc, No. (%)
 White708 (87.6)
 Asian46 (5.7)
 Hispanic and/or Latino41 (5.1)
 Black or African American21 (2.6)
 American Indian or Alaskan Native8 (1.0)
 Native Hawaiian or Pacific Islander6 (0.7)
 Middle Eastern7 (0.9)
 Other3 (0.4)
Ever use of other tobacco productsd, No. (%)
 Yes157 (19.4)
 No651 (80.6)
  • a Age data available for n = 769; range: 13–17 y old.

  • b SES was assessed by using the Family Affluence Scale (Boyce et al18), data were available for n = 795, and there was a possible range of 0 (low) to 8 (high).

  • c Race/ethnicity values add up to >100% because students could select >1 category.

  • d Ever use of other tobacco products (ie, cigars, hookah, blunts, smokeless tobacco).