Table 3
Evaluation of statistical interaction between level of waterpipe tobacco condition and dependence level, Oklahoma City, Oklahoma, 2017-2018*
(2) | P value | |
| Smoking topography | ||
| Average flow rate | 9.34 | 0.0094 |
| Average interpuff interval | 1.94 | 0.38 |
| Average puff volume | 9.64 | 0.0081 |
| Average puff duration | 5.66 | 0.059 |
| Maximum puff volume | 0.20 | 0.91 |
| Total puffing time | 5.06 | 0.080 |
| Total smoking time | 5.47 | 0.065 |
| Total inhaled volume | 3.59 | 0.17 |
| Total number of puffs | 1.89 | 0.39 |
| Biomarkers of exposure | ||
| Plasma nicotine boost | 0.56 | 0.75 |
| eCO boost | 9.74 | 0.0077 |
| Subjective drug liking | ||
| Enjoyed product | 2.02 | 0.36 |
| Interested in using product in future | 5.08 | 0.079 |
| Liked product | 2.98 | 0.23 |
| Found product pleasurable | 2.66 | 0.26 |
| Found product satisfying | 3.28 | 0.19 |
| Willingness to use product in future | 2.47 | 0.29 |
| Behavioural intentions | ||
| Try product again | 5.52 | 0.063 |
| Pay to smoke product in hookah lounge/bar | 3.48 | 0.18 |
| Purchase product for personal use | 4.58 | 0.10 |
| Use product regularly | 1.60 | 0.45 |
*Likelihood ratio tests were used to evaluate statistical significance of interaction terms in full versus reduced mixed-effects regression models.
eCO, expired carbon monoxide.