Table 2.

Demographic characteristics (N=3514)

	Long-term quitters	Short-term quitters	Relapsed smokers	Smokers
Demographics	N=262	N=383	N=45	N=2824
Sex*	Per cent	Per cent	Per cent	Per cent
Male	87.79	79.90	84.44	85.73
Female	12.21	20.10	15.56	14.27
Age‡
<30	8.78	13.05	8.89	14.09
30–44	37.79	31.07	17.78	38.49
45–59	28.63	29.24	44.44	30.95
≥60	24.81	26.63	28.89	16.47
Education
Below junior school	34.10	34.46	40.00	34.64
High school	35.63	33.94	31.11	37.41
University/college above	30.27	31.59	28.89	27.95
Marital status‡
Single	11.45	16.45	15.56	21.82
Married	81.68	74.67	73.33	68.79
Separated, widowed	6.87	8.88	11.11	9.39
Employed‡
Yes	63.98	62.14	60.00	74.42
No	36.02	37.86	40.00	25.58
Monthly income(NT$)†
Low (≤20 000)	29.01	34.73	46.67	28.61
Medium (20 001–49 999)	31.68	35.77	24.44	35.98
High (≥50 000)	39.31	29.50	28.89	35.41
Any disease at baseline
Yes	31.30	36.81	40.00	33.55
No	68.70	63.19	60.00	66.45

Using χ² test for four groups, *p<0.05; †p<0.01; ‡p<0.001.