Table 2.

Proportion of current smokers intending to smoke less or quit smoking given a hypothetical tobacco retail price increase by smoking patterns in Songjiang, Shanghai, China.

Variables	Groups	Smoke less if tobacco retail price increases		LR (a)		LR (b)		Quit smoking if tobacco retail price increases		LR (a)		LR (b)
		n	Proportion (%)	OR	95% CI	OR	95% CI	n	Proportion (%)	OR	95% CI	OR	95% CI
Smoking duration (years)	<20	92	13.47	Ref		Ref		89	13.03	Ref		Ref
	20–29	166	12.71	0.94	0.71–1.23	0.95	0.71–1.26	140	10.72	0.80	0.60–1.06	0.81	0.60–1.08
	30–39	278	10.88	0.78	0.61–1.01	0.76	0.58–0.99	257	10.05	0.75	0.58–0.97	0.71	0.54–0.94
	≥40	250	9.21	0.65	0.51–0.84	0.59	0.44–0.78	196	7.22	0.52	0.40–0.68	0.46	0.34–0.62
Smoking intensity (cigarettes/day)	1–9	270	13.46	Ref		Ref		239	11.91	Ref		Ref
	10–19	71	11.16	0.81	0.61–1.07	0.87	0.65–1.16	64	10.06	0.83	0.62–1.11	0.85	0.63–1.15
	≥20	445	9.64	0.69	0.58–0.81	0.68	0.57–0.81	379	8.21	0.66	0.56–0.78	0.68	0.56–0.82
Sex	Male	785	10.89	Ref		Ref		679	9.42	Ref		Ref
	Female	1	2.04	0.17	0.02–1.24	0.14	0.02–1.05	3	6.12	0.63	0.19–2.03	0.52	0.16–1.68
Monthly income (RMB)	<1500	68	12.39	Ref		Ref		53	9.65	Ref		Ref
	1500–2499	328	10.90	0.87	0.66–1.14	0.89	0.67–1.19	276	9.18	0.95	0.67–1.29	1.01	0.74–1.38
	2500–4999	277	10.62	0.84	0.63–1.12	0.78	0.59–1.04	262	10.04	1.05	0.77–1.43	0.98	0.71–1.34
	≥5000	113	10.33	0.82	0.59–1.12	0.76	0.55–1.07	91	8.32	0.85	0.59–1.21	0.80	0.55–1.16
Monthly cost of smoking (RMB)	<200	115	10.13	Ref		Ref		108	9.52	Ref		Ref
	200–499	454	11.60	1.16	0.94–1.45	1.22	0.97–1.54	392	10.02	1.06	0.85–1.33	1.10	0.86–1.40
	500–999	165	10.15	1.00	1.78–1.29	1.19	0.89–1.60	141	8.68	0.90	0.69–1.18	1.06	0.78–1.44
	≥1000	52	8.86	0.86	0.61–1.22	1.19	0.80–1.79	41	6.98	0.72	0.49–1.04	1.03	0.66–1.58
Tobacco price per pack (RMB)	<10	215	11.16	Ref		Ref		188	9.76	Ref		Ref
	10–19	420	11.56	1.04	0.87–1.24	0.97	0.80–1.16	370	10.18	1.05	0.87–1.26	0.95	0.78–1.15
	20–49	143	10.11	0.90	0.72–1.12	0.76	0.58–1.00	119	8.41	0.85	0.67–1.08	0.71	0.53–0.95
	≥50	8	2.80	0.23	0.11–0.47	0.22	0.11–0.46	5	1.75	0.17	0.07–0.40	0.16	0.06–0.38

LR (a): univariate logistic regression; LR (b): multivariate logistic regression; OR: odds ratio; CI: confidence interval.