Table 3. Odds ratios of age and equivalent income for HTP smokers versus only combustible cigarette smokers using logistic regression analysis.

		OR for being HTP smokersb
		aORa (95% CI)
Men	Age, years
(n = 585)	20–29	16.38 (6.07–44.17)
	30–39	6.93 (2.57–18.72)
	40–49	3.68 (1.34–10.12)
	50–59	2.25 (0.78–6.52)
	60–69	1.00 (reference)
	Equivalent income, JPY/year
	<2 million	1.00 (reference)
	2.00–2.99 million	1.41 (0.64–3.11)
	3.00–3.99 million	2.20 (1.03–4.71)
	≥4 million	2.48 (1.23–5.01)
Women	Age, years
(n = 264)	20–29	22.26 (4.58–108.13)
	30–39	4.13 (0.77–22.11)
	40–49	2.90 (0.56–14.94)
	50–59	1.19 (0.19–7.51)
	60–69	1.00 (reference)
	Equivalent income, JPY/year
	<2 million	1.00 (reference)
	2.00–2.99 million	1.23 (0.34–4.41)
	3.00–3.99 million	3.34 (1.11–10.04)
	≥4 million	2.54 (0.88–7.35)

aOR, adjusted odds ratio; CI, confidence interval; HTP, heated tobacco product.

^aAdjusted for age and equivalent income.

^bHTP smokers: smokers using only HTPs or HTPs and other tobacco products.