Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Negative binomial model predicting individual product use over time.
| Predictor | Coefficient | Standard Error | IRR (95% ci) |
|---|---|---|---|
| E-cigarettes | |||
| Lack of premeditation | 0.08 | 0.04 | 1.09 (1.01, 1.17) |
| Hookah | |||
| Lack of premeditation | 0.12 | 0.04 | 1.12 (1.05, 1.21) |
| Anhedonia | 0.04 | 0.01 | 1.04 (1.02, 1.06) |
| Negative affectivity | −0.04 | 0.01 | 0.96 (0.94, 0.99) |
| Cigars | |||
| Positive urgency | 0.08 | 0.04 | 1.09 (1.00, 1.18) |
