Table 8.
Quit intention outcomes
| No. | Author(s), publication year | Group | Quit Intentions | OR or Beta | Measures | |
|---|---|---|---|---|---|---|
| Pre | Post | |||||
| 2 | Borland et al., 2009* | Australia | 1.68 | 2.04 | NA | Cognitive responses combined two questions: “Extent to which the warnings both made the respondent think about the health risks of smoking” and “made them more likely to quit smoking” |
| UK | 1.95 | 1.81 | NA | |||
| Canada | 1.93 | 1.84 | NA | |||
| 3 | Brewer et al., 2016 | NA | 2.3 (0.9) | 2.7 (1.0) | NA | Quit intentions combined three questions: “How likely are you to quit smoking in the next month?”, “How much do you plan to quit smoking in the next month?” and “How interested are you in quitting smoking in the next month?” |
| 4 | Brewer et al., 2019 | NA | 0.26 (0.18, 0.35) | 0.16 (0.07, 0.24 | NA | Quit intentions combines 3 questions: “How interested are you in quitting smoking in the next month?”, “How likely are you to quit smoking in the next month?” and “Are you planning to quit smoking” |
| 6 | Durkin et al., 2015 | Pre PP | NA | NA | 36.10% (OR:1.00) | “Do you intend to quit in the next month?” |
| Late transition | NA | NA | 42% (OR: 1.42) | |||
| Post 1 year PP | NA | NA | 35.60% (OR: 0.98) | |||
| 7 | Elton-Marshall et al., 2015 | NA | 9.0% | 18.0% | NA | “To what extent, if at all, do the health warnings on cigarette packs make you more likely to quit smoking?” |
| 8 | Fathelrahman et al., 2010 | NA | 30 (42.9%) | 28 (40.0%) | NA | “Planning to quit smoking in the future (within the next month, within the next 6 months, sometime in the future beyond six months or not planning to quit)” |
| 9 | Fathelrahman et al., 2013 | NA | 418 (41.1%) | 239 (29.8%) | NA | “any interest in quitting” |
| 11 | Gravely et al., 2016a | NA | 20.6 | 31.3 | OR: 1.76 | “To what extent do the health warnings on cigarette packs make you think about quitting smoking?” |
| 12 | Gravely et al., 2016b | NA | 19.8% (95% CI 14.6; 26.4) | 20.5% (95% CI 15.2; 27.0) | NA | “Are you planning to quit using smokeless tobacco”: Within the next month; Within the next 6 months; Sometime in the future beyond 6 months; Not planning to quit |
| 13 | Green et al., 2014 | NA | 13.50% | 26.60% | OR: 2.69 (95% CI = 1.75–4.15) | “To what extent, if at all, do the warning labels on cigarette packs make you more likely to quit smoking” |
| 15 | Hall et al., 2018 | NA | 2.3 (0.9) | 2.57 (1.07) | NA | Quit intentions combined 3 questions: “How much do you plan to quit smoking in the next month?”, “How interested are you in quitting smoking in the next month?” and “How likely are you to quit smoking in the next month?” |
| 16 | Hitchman et al., 2014 | NA | NA | NA | OR: −0.504 (×2 = 6.48) | “To what extent, if at all, do the warning labels on cigarette packs make you more likely to quit smoking” |
| 19 | Li et al., 2015 | NA | 2.1 | 1.9 | NA | Cognitive response combined 3 questions: “made them think about the health risks of smoking”, “made them more likely to quit smoking” and “if ‘warning labels on cigarette packages’ motivated them to think about quitting in the past 6 months” |
| 20 | Lin et al., 2016 | Thailand | 0.49 (0.06) | 0.61 (0.06) | NA | Cognitive response combined 2 questions: “made them think about the health risks of smoking” and “made them more likely to quit smoking” |
| Malaysia (wave 2–4) | 0.07 (0.06) | 1.01 (0.06) | NA | |||
| Malaysia (wave 4–6) | 1.01 (0.06) | 0.47 (0.06) | NA | |||
| 23 | McQueen et al., 2015 | NA | 130 (71%) | 133 (73%) | NA | “made them think about quitting” |
| 24 | Nagelhout et al., 2016 | UK | NA | NA | OR: 1.34 | Cognitive responses combined 3 questions: “To what extent, if at all, do the warning labels make you think about the health risks of smoking?”, “To what extent, if at all, do the warning labels on cigarette packs make you more likely to quit smoking?” and “In the past 6 months, have warning labels on cigarette packages led you to think about quitting?” |
| France | NA | NA | OR: 0.7 | |||
| 26 | Nicholson et al., 2017 | NA | 50 | 54 | NA | “Perceive warning labels effective to quit or stay quit” |
| 27 | Osman et al., 2016 | NA | NA | NA | OR: 1.21 | “Their intention to quit smoking” |
| 28 | Parada et al., 2017* | NA | 2.4 (mean) | 2.6 | NA | Three questions: “How interested are you in quitting smoking in the next month,” “How much do you plan to quit smoking in the next month?” and “How likely are you to quit smoking in the next month?” |
| 31 | Schneider et al., 2012 | NA | NA | NA | 18.59 (6.31) | Motivation to quit was assessed with four items: What extent the warnings induced them to: “consider ceasing their cigarette consumption”, “consider reducing their cigarette consumption”, “think about the health risks associated with smoking” and “refrain from smoking a cigarette at the moment” |
| 34 | Yong et al., 2013 | NA | 27.9 (2.37) | 42.0 (2.19) | NA | “To what extent, if at all, do the health warnings on cigarette packs make you more likely to quit smoking?” |
*Results generated online from web plot digitize