Table 1.
Repeated Measures Analysis of Variance (RM ANOVA) Results for Study 1 (and Comparison Sample) and Study 2
| Instructed puffing (main study) | Uninstructed puffing (comparison sample) | Own cigarette condition comparisons: instructed vs. uninstructed puffing | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cig or e-cig condition | Trial | Cig × Trial | Trial (session) | Study | Trial (session) | Study × Trial | ||||||||
| F | η2p | F | η2p | F | η2p | F | η2p | F | η2p | F | η2p | F | η2p | |
| Study 1 | df = 2, 88 | df = 3, 132 | df = 6, 264 | df = 3, 174 | df = 1, 102 | df = 3, 306 | df = 3, 306 | |||||||
| Puff volume | 11.48*** | 0.21 | 3.74*, a | 0.08 | 0.33 | 0.01 | 5.20*** | 0.08 | 67.43*** | 0.40 | 5.01** | 0.05 | 2.47† | 0.02 |
| Puff duration | 7.04** | 0.14 | 0.27 | 0.01 | 1.18 | 0.03 | 2.91* | 0.05 | 11.16** | 0.10 | 2.44† | 0.02 | 1.35 | 0.01 |
| Interpuff interval | 2.13 | 0.05 | 3.70*, a | 0.08 | 0.80 | 0.02 | 3.05* | 0.05 | 0.22 | 0.00 | 1.54 | 0.02 | 2.83* | 0.03 |
| Number of puffs | 1.19 | 0.03 | 4.29**, a | 0.09 | 0.92 | 0.02 | 2.82* | 0.05 | 143.94*** | 0.59 | 2.24† | 0.02 | 2.09† | 0.02 |
| Study 2 | df = 1, 26 | df = 3, 78 | df = 3, 78 | |||||||||||
| Puff volume | 1.97 | 0.07 | 1.21 | 0.04 | 1.25 | 0.05 | ||||||||
| Puff duration | 0.94 | 0.04 | 2.61 | 0.09 | 0.37 | 0.01 | ||||||||
| Interpuff interval | 0.08 | 0.00 | 2.09 | 0.07 | 1.83 | 0.07 | ||||||||
| Number of puffs | 0.22 | 0.01 | 0.89 | 0.03 | 1.57 | 0.06 | ||||||||
Cig = cigarette, E-cig = electronic cigarette, df = degrees of freedom.
aNo significant differences in follow up pairwise comparisons.
†p ≤ .10; *p < .05; **p < .01, ***p < .001.