Czaplicki Lauren, Barker Hannah E, Welding Kevin, Islam Farahnaz, Dao Son, Ba Chan Nhu Huynh, Cohen Joanna E
Department of Health, Behavior and SocietyI, nstitute for Global Tobacco Control, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
Department of Health, Behavior and SocietyI, nstitute for Global Tobacco Control, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA.
Tob Control. 2025 Jan 2;34(1):14-20. doi: 10.1136/tc-2023-058062.
Raising cigarette prices, increasing graphic health warning label (HWL) coverage and requiring plain packaging could reduce cigarette smoking in Vietnam. This discrete choice experiment estimates the potential impact of these policies on smoking behaviour.
In February-May 2022, we conducted a phone-based, cross-sectional survey of 1494 Vietnamese adults who smoke. Participants were randomly assigned to view four individual cigarette pack images, varied on price (15 000 (); 20 000; 30 000 or 40 000 Vietnamese dong (VND)) and packaging (branded pack with 50% graphic HWL (); branded pack with 85% graphic HWL; plain pack with 50% graphic HWL or branded pack without HWL). Participants responded if they would quit or continue smoking if they could only purchase the pack shown. We used binomial logistic regressions to estimate the relative risk (RR) of price and packaging on hypothetical quitting.
Participants were more likely to report they would quit when presented with 30 000 VND (RR 1.20, 95% CI 1.07 to 1.35) and 40 000 VND packs (RR 1.40, 95% CI 1.23 to 1.58) vs the 15 000 VND pack. Participants were also more likely to report they would quit when shown the branded pack with 85% HWL (RR 1.30, 95% CI 1.18 to 1.42) and plain pack with 50% HWL (RR 1.34, 95% CI 1.21 to 1.49) vs the branded pack with 50% HWL coverage. Participants had significantly lower quit likelihood (RR 0.41, 95% CI 0.35 to 0.48) when shown the branded pack without a HWL.
Results suggest raising cigarette prices to at least 30 000 VND, implementing larger graphic HWLs or plain packaging could decrease smoking rates in Vietnam.
提高香烟价格、增加图形健康警示标签（HWL）的覆盖范围以及要求采用平装包装可能会减少越南的吸烟率。这项离散选择实验估计了这些政策对吸烟行为的潜在影响。
在2022年2月至5月期间，我们对1494名越南成年吸烟者进行了一项基于电话的横断面调查。参与者被随机分配观看四张单独的香烟包装图片，这些图片在价格（15000越南盾（）；20000；30000或40000越南盾（VND））和包装（带有50%图形HWL的品牌包装（）；带有85%图形HWL的品牌包装；带有50%图形HWL的平装包装或没有HWL的品牌包装）方面有所不同。如果参与者只能购买展示的包装，他们要回答是会戒烟还是继续吸烟。我们使用二项逻辑回归来估计价格和包装对假设戒烟的相对风险（RR）。
与15000越南盾的包装相比，当展示30000越南盾（RR 1.20，95%置信区间1.07至1.35）和40000越南盾的包装时，参与者更有可能报告他们会戒烟。与50%HWL覆盖的品牌包装相比，当展示85%HWL的品牌包装（RR 1.30，95%置信区间1.18至1.42）和50%HWL的平装包装时，参与者也更有可能报告他们会戒烟。当展示没有HWL的品牌包装时，参与者的戒烟可能性显著降低（RR 0.41，95%置信区间0.35至0.48）。
结果表明，将香烟价格提高到至少30000越南盾、实施更大的图形HWL或平装包装可能会降低越南的吸烟率。
