Division of Environmental and Preventive Medicine, Department of Social Medicine, Faculty of Medicine, Tottori University.
National Hospital Organization Kurihama Medical and Addiction Center.
J Epidemiol. 2020 Dec 5;30(12):547-555. doi: 10.2188/jea.JE20190199. Epub 2019 Nov 30.
In this study, we aim to estimate the prevalence of heated tobacco product (HTP) smokers 3 years after the launch of HTPs in Japan.
Our study, performed in February 2018 in Japan, had a cross-sectional population-based design. A total of 4,628 adult participants (2,121 men and 2,507 women) were randomly sampled from all regions of Japan. The response rate was 57.9%. Interviews were conducted by trained investigators who visited participants' homes. A survey on current (past 30 days) and lifetime tobacco use (including e-cigarettes and HTPs), as well as numerous sociodemographic factors, was conducted.
The age-adjusted rates and estimated number of lifetime-HTP smokers were 14.1% (95% confidence interval [CI], 12.5-15.6%; 7.11 million men) and 3.7% (95% CI, 2.9-4.4%; 1.99 million women). The age-adjusted rates for current HTP smokers were 8.3% (95% CI, 7.1-9.6%; 4.21 million men) and 1.9% (95% CI, 1.3-2.4%; 1.02 million women). Multiple variables were found to be associated with a higher prevalence of current HTP use, including being male, aged 20-39 years, a current Internet user, a risky drinker, or a heavy episodic drinker. HTP use was also higher among men with 10 years or more of education, women with 15 years or less of education, and men with middle- or high-level household incomes.
We concluded that HTP use has increased substantially in Japan. However, regulations for HTPs are weaker than those for combustible cigarettes in Japan. Thus, HTPs should be subjected to the same regulations as combustible tobacco products.
本研究旨在估计日本加热烟草产品（HTP）推出 3 年后 HTP 吸烟者的流行率。
我们的研究于 2018 年 2 月在日本进行，采用基于人群的横断面设计。从日本各地随机抽取了 4628 名成年参与者（2121 名男性和 2507 名女性）。回应率为 57.9%。由经过培训的调查员进行访谈，他们亲自到参与者家中进行访问。调查了当前（过去 30 天）和终生烟草使用情况（包括电子烟和 HTP）以及许多社会人口因素。
调整年龄后的终生 HTP 吸烟者的比例和估计人数分别为 14.1%（95%置信区间[CI]，12.5-15.6%；711 万男性）和 3.7%（95% CI，2.9-4.4%；199 万女性）。当前 HTP 吸烟者的调整年龄后的比例为 8.3%（95% CI，7.1-9.6%；421 万男性）和 1.9%（95% CI，1.3-2.4%；102 万女性）。许多变量与当前 HTP 使用的更高流行率相关，包括男性、年龄在 20-39 岁、当前互联网用户、有风险的饮酒者或重度间歇性饮酒者。受教育程度在 10 年或以上的男性、受教育程度在 15 年或以下的女性以及中等或高收入家庭的男性中，HTP 的使用率也更高。
我们的结论是，HTP 在日本的使用大幅增加。然而，日本对 HTP 的监管比可燃香烟弱。因此，HTP 应受到与可燃烟草产品相同的监管。
