Attractiveness | Quitting intentions | t (p value) | |||
---|---|---|---|---|---|
Mean post (95% CI) | Mean pre (95% CI) | Mean post (95% CI) | Mean paired (post–pre) difference (95% CI) | ||
Study 2: Minute | 2.44 | 2.83 | 0.38 (0.23 to 0.54) | 4.90 (<0.001)§ | |
Study 1: Minute | 1.17 (0.79 to 1.55)* | 3.26 (2.62 to 3.91)† | 3.94 (3.35 to 4.53)‡ | 0.68 (0.32 to 1.04) | 3.81 (<0.001)§ |
Study 1: Toxic | 1.26 (0.79 to 1.73)* | 3.83 (3.16 to 4.51)† | 4.07 (3.44 to 4.69)‡ | 0.23 (0.02 to 0.45) | 2.25 (0.032)§ |
Study 1: Control | 2.36 (1.94 to 2.79)* | 3.00 (2.10 to 3.90)† | 3.13 (2.23 to 4.02)‡ | 0.13 (0.02 to 0.27) | 1.81 (0.083)§ |
*ANOVA comparing mean postexposure attractiveness across minute/toxic/control conditions F=9.16 (p<0.001).
†ANOVA comparing mean pre-exposure quitting intentions across minute/toxic/control conditions F=1.38 (p=0.258).
‡ANOVA comparing mean postexposure quitting intentions across minute/toxic/control conditions F=2.08 (p=0.131).
§t and p values assessing change (post–pre) in quitting intentions using paired-samples t test.
Scale ranges from 0 to 6 with 6 indicating higher quitting intentions/attractiveness; attractiveness is an aggregation of four items; quitting intentions is an aggregation of three items in Study 2.
ANOVA, analysis of variance.