Table 1.
Participant characteristics at baseline and 1-month follow-up
| Baseline (n = 319) | Follow-up (n = 279) | P value | |
|---|---|---|---|
| Gender | .107 | ||
| Male | 36.0% (105) | 34.4% (96) | |
| Female | 64.0% (204) | 65.6% (183) | |
| Age (M, SD) | 15.0 (1.6) | 14.9 (1.6) | .263 |
| Race | .003 | ||
| Black/African American | 26.4% (84) | 23.7% (66) | |
| White | 57.9% (184) | 58.4% (163) | |
| Other race | 15.7% (51) | 17.9% (50) | |
| Ethnicity | .645 | ||
| Hispanic | 12.2% (39) | 12.5% (35) | |
| Non-Hispanic | 87.8% (280) | 87.5% (244) | |
| Parent’s marital status | – | ||
| Married/partnership | 78.3% (241) | 81.4% (219) | |
| Single, never married | 6.8% (21) | 6.0% (16) | |
| Divorced/separated/widowed | 14.9% (46) | 12.6% (34) | |
| Parent’s educational attainment | – | ||
| Less than college degree | 19.6% (59) | 19.7% (52) | |
| College degree or higher | 80.4% (243) | 80.3% (212) | |
| Smoking risk | .100 | ||
| Never smoker, not susceptible | 46.2% (145) | 47.3% (130) | |
| Never smoker, susceptible/ever smoker | 53.8% (169) | 52.7% (145) | |
| Covariates related to smoking risk | |||
| Exposure to family members’ smoking | 18.7% (59) | 18.1% (50) | .457 |
| Exposure to friends’ smoking | 26.9% (85) | 25.0% (69) | .035 |
| Tobacco advertising exposure (M, SD) | 11.4 (2.8) | 11.6 (3.1) | .013 |
| Message framing conditions | .797 | ||
| Gain-framed | 32.9% (105) | 33.0% (92) | |
| Loss-framed | 33.2% (106) | 32.6% (91) | |
| Neutral | 33.9% (108) | 34.4% (96) |
Data are % (n) unless otherwise indicated. Some ns within categories do not sum to total n due to sporadic missing data (<5% of the sample for any given variable). P values reflect comparison of the sample retained at 1 month versus those lost to follow-up. All participants lost to follow-up were missing data on parental demographics, so p value could not be computed