Relative risk perceptions held by a majority of respondents, overall and for key subpopulations
| Proportion of samples in which a majority of respondents held a particular perception of relative risk (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product comparison | Samples* | Less | Less or equal | Equal | Equal or greater | Greater | Don't know† | None‡ | Unknown§ |
| SLT vs CCs (ref) | Overall (n=77) | 18 | 3 | 13 | 6 | 0 | 0 | 27 | 32 |
| General population (n=20) | 20 | 0 | 20 | 15 | 0 | 0 | 30 | 15 | |
| Smokers (n=38) | 13 | 0 | 11 | 5 | 0 | 0 | 16 | 55 | |
| SLT users (n=13) | 38 | 8 | 15 | 0 | 0 | 0 | 31 | 8 | |
| SLT non-users (n=6) | 0 | 17 | 0 | 0 | 0 | 0 | 83 | 0 | |
| ECs vs CCs (ref) | Overall (n=46) | 70 | 0 | 0 | 0 | 0 | 4 | 17 | 9 |
| General population (n=11) | 64 | 0 | 0 | 0 | 0 | 0 | 27 | 9 | |
| Smokers (n=16) | 81 | 0 | 0 | 0 | 0 | 0 | 19 | 0 | |
| Non-smokers (n=2) | 0 | 0 | 0 | 0 | 0 | 50 | 0 | 50 | |
| EC users (n=16) | 75 | 0 | 0 | 0 | 0 | 0 | 19 | 6 | |
| EC non-users (n=1) | 0 | 0 | 0 | 0 | 0 | 100 | 0 | 0 | |
| NRT vs CCs (ref) | Overall (n=20)¶ | 35 | 0 | 10 | 5 | 0 | 0 | 0 | 50 |
| General population (n=4) | 75 | 0 | 0 | 25 | 0 | 0 | 0 | 0 | |
| Smokers (n=12) | 25 | 0 | 17 | 0 | 0 | 0 | 0 | 58 | |
| NRT users (n=2)¶ | 50 | 0 | 0 | 0 | 0 | 0 | 0 | 50 | |
| NRT non-users (n=2)¶ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 100 | |
| SLT vs NRT (ref) | Overall (n=2)¶ | 0 | 0 | 0 | 0 | 0 | 100 | 0 | 0 |
| ECs vs NRT (ref) | Overall (n=1)¶ | 0 | 0 | 0 | 0 | 0 | 0 | 100 | 0 |
Bold results indicate the proportion of samples in which a majority of respondents held the epidemiologically correct perception of relative risk, for each product comparison.
*Sample sizes reflect those extracted from observational studies for which quantitative comparable findings were reported. Samples from the following studies were excluded due to their experimental nature: SLT versus CCs.39 ,43 Samples from the following studies were excluded due to use of an incompatible measure: SLT versus CCs;45 ECs versus CCs;69 ,73 ECs versus NRT.69
†Denotes samples in which a majority of respondents reported not knowing the relative risk of given products.
‡Denotes samples in which a particular perception of relative risk was not held by a majority of respondents.
§Denotes samples for which insufficient information was given to discern whether a majority of respondents held a particular perception of relative risk.
¶Denotes findings which should be interpreted with caution, given limitations with available data.