Table 5

Results of multivariate logistic regression examining factors associated with any intention to quit smoking

	Percentage intending to quit	OR	95% CI
City
Beijing	29.1	Reference
Shenyang	32.4	1.13	0.61 to 2.09
Shanghai	16.5	0.50	0.27 to 0.92
Changsha	25.2	0.99	0.58 to 1.69
Guangzhou	14.8	0.54	0.31 to 0.96
Yinchuan	28.3	0.88	0.50 to 1.55
Gender
Male	24.3	Reference
Female	25.3	0.92	0.53 to 1.61
Age in years
18–34	25.3	Reference
35–44	25.4	1.13	0.79 to 1.61
45–54	24.5	1.19	0.80 to 1.76
55 or older	23.2	1.21	0.83 to 1.77
Ethnic group
Han	26.9	Reference
Others	24.3	0.92	0.59 to 1.43
Highest education
Low	19.1	Reference
Medium	24.7	1.16	0.85 to 1.58
High	27.3	1.10	0.72 to 1.67
Household income per month
Low	22.8	Reference
Medium	25.6	1.13	0.85 to 1.51
High	25.5	1.27	0.91 to 1.77
Don't know/cannot say	16.6	0.85	0.52 to 1.39
Number of cigarettes smoked per day
1–10	30.5	Reference
11–20	22.6	0.71	0.60 to 0.84
21–30	15.7	0.50	0.36 to 0.70
31 or more	15.6	0.49	0.33 to 0.72
Think about the money spent on smoking in the last month
Never	19.6	Reference
Occasionally	29.6	1.61	1.26 to 2.05
Often	42.2	2.78	2.17 to 3.57
Don't know/cannot say	12.4	0.85	0.35 to 2.02
Buy less expensive cigarettes at the last purchase
No	26.2	Reference
Yes	21.0	0.75	0.58 to 0.96
Index of knowledge about the adverse health effects of smoking
0–1	11.8	Reference
2–3	17.1	1.49	1.09 to 2.04
4–5	27.5	2.56	1.95 to 3.35
6–8	37.8	3.69	2.59 to 5.23