Table 2.
Probit average marginal effects estimating the probability of e-cigarette use and daily smoking at two weeks, six weeks, and six months post-auction.
| E cigarette use | Smoking | |||||
|---|---|---|---|---|---|---|
| 2 weeks (N=219)a | 6 weeks (N=216) | 6 months (N=251) | 2 weeks (N=219) | 6 weeks (N=216) | 6 months (N=251) | |
| Won e-cig | 0.14** | 0.21*** | 0.10** | −0.11* | −0.03 (0.05) | −0.06 (0.06) |
| (Ref=No) | (0.06)b | (0.05) | (0.05) | (0.06) | (0.05) | (0.06) |
| Used e-cig before | 0.12** | 0.04 | 0.12*** | 0.09* | 0.01 | 0.02 |
| (Ref=No) | (0.05) | (0.05) | (0.05) | (0.05) | (0.04) | (0.05) |
| Bid for single e-cig | 0.01 | −0.00 | −0.00 | −0.00 | 0.00 | −0.00 |
| ($) | (0.01) | (0.00) | (0.01) | (0.02) | (0.00) | (0.00) |
| Print Group | −0.07 | −0.01 | 0.02 | −0.05 | −0.01 | −0.13* |
| (Ref= Control) | (0.08) | (0.07) | (0.07) | (0.07) | (0.06) | (0.08) |
| Video Group | 0.08 | −0.01 | 0.08 | 0.07 | −0.02 | −0.10 |
| (Ref= Control) | (0.07) | (0.07) | (0.07) | (0.07) | (0.06) | (0.08) |
| Print+Video Group | 0.00 | −0.10 | 0.01 | 0.15* | 0.05 | −0.08 |
| (Ref= Control) | (0.07) | (0.08) | (0.07) | (0.08) | (0.07) | (0.08) |
| Age | −0.00 | 0.00 | −0.00 | 0.00 | 0.00 | 0.00 |
| (years) | (0.00) | (0.00) | (0.00) | (0.00) | (0.00) | (0.00) |
| Female | 0.03 | −0.02 | −0.05 | 0.04 | 0.01 | 0.09 |
| (Ref=Male) | (0.05) | (0.05) | (0.05) | (0.05) | (0.04) | (0.05) |
| Race | −0.08 | −0.11** | −0.03 | −0.05 | −0.01 | −0.07 |
| (Ref = White) | (0.05) | (0.05) | (0.05) | (0.05) | (0.04) | (0.05) |
a
Sample sizes differ from Table 1 because some participants did not complete the demographic survey.
b
Standard errors in parentheses.
*
Significant at 0.10 level.
**
Significant at 0.05 level.
***
Significant at 0.01 level.