Table 1.
Participant response and OR of change, following introduction of reduced ignition propensity (RIP) cigarettes
| Response | n | No. of baseline cases | No. of follow-up cases | Before, %* | After, %* | OR† | 95% CI | p Value |
|---|---|---|---|---|---|---|---|---|
| Consumers' product perceptions | ||||||||
| Cigarettes taste very or somewhat unpleasant | 298 | 45 | 59 | 14.8 | 20.1 | 1.54 | 0.92 to 2.63 | 0.109 |
| Cigarettes not at all or only a little satisfying | 300 | 33 | 24 | 12.7 | 7.7 | 0.68 | 0.36 to 1.26 | 0.243 |
| Cigarettes go out between puffs | 304 | 157 | 216 | 51.6 | 70.1 | 4.28 | 2.54 to 7.60 | <0.001 |
| Cigarettes go out between puffs often | 139 | 41 | 65 | 29.3 | 44.2 | 2.71 | 1.44 to 5.42 | 0.001 |
| Lit end or live ash fall off the end of cigarette on its own | 300 | 119 | 101 | 43.2 | 33.7 | 0.69 | 0.45 to 1.05 | 0.089 |
| Noticed changes in brand | 268 | 67 | 109 | 26.7 | 41.7 | 2.83 | 1.73 to 4.77 | <0.001 |
| Purchasing patterns | ||||||||
| Purchase cigarettes from difference source | 305 | 28 | 37 | 9.4 | 13.0 | 1.43 | 0.79 to 2.63 | 0.262 |
| Self-reported smoking behaviour | ||||||||
| Smoke >20 cigarettes per day | 304 | 67 | 49 | 21.5 | 15.6 | 0.25 | 0.08 to 0.63 | 0.001 |
| 0–5 min to first cigarette | 295 | 68 | 66 | 23.5 | 22.3 | 0.94 | 0.57 to 1.55 | 0.905 |
| Inhale deeply into chest or as deeply as possible | 297 | 157 | 133 | 56.1 | 46.7 | 0.53 | 0.32 to 0.86 | 0.009 |
| Take few puffs on each cigarette | 285 | 18 | 29 | 6.3 | 9.3 | 1.85 | 0.90 to 3.95 | 0.099 |
| Let cigarette burn for 30 s or less between puffs | 273 | 211 | 195 | 77.1 | 72.2 | 0.64 | 0.39 to 1.05 | 0.081 |
| Fire-risk behaviours | ||||||||
| Left burning cigarette unattended | 303 | 77 | 83 | 26.5 | 28.1 | 1.17 | 0.73 to 1.89 | 0.567 |
| Smoked in bed | 306 | 60 | 59 | 19.2 | 19.6 | 1.10 | 0.42 to 2.89 | 1.000 |
| Extinguish cigarette in sand or water | 307 | 140 | 142 | 48.5 | 45.9 | 1.05 | 0.66 to 1.66 | 0.912 |
| Scorched or burned clothes | 301 | 42 | 50 | 16.0 | 18.0 | 1.40 | 0.76 to 2.62 | 0.312 |
| Quitting intentions | ||||||||
| Sure you would succeed in quitting in next 6 months | 289 | 143 | 141 | 51.5 | 51.2 | 0.95 | 0.61 to 1.50 | 0.913 |
| Want to quit | 302 | 250 | 258 | 83.6 | 86.4 | 1.73 | 0.78 to 4.02 | 0.201 |
| Plan to quit in next 6 months | 288 | 123 | 125 | 42.8 | 45.6 | 1.04 | 0.68 to 1.59 | 0.919 |
| Set a quit date | 181 | 37 | 26 | 21.3 | 15.6 | 0.62 | 0.32 to 1.16 | 0.144 |
| Quitting permanently somewhat or very hard | 301 | 245 | 261 | 79.6 | 87.3 | 2.45 | 1.18 to 5.48 | 0.014 |
| Think about quitting due to cigarette price | 191 | 155 | 167 | 80.5 | 88.1 | 1.92 | 0.95 to 4.09 | 0.073 |
| Think about quitting due to changes in cigarette brand | 191 | 34 | 43 | 19.0 | 23.5 | 1.43 | 0.79 to 2.63 | 0.262 |
| Think about quitting due to not enjoying smoking as much | 190 | 124 | 116 | 64.4 | 60.7 | 0.76 | 0.44 to 1.31 | 0.366 |
*
Weighted
†
Unweighted