Long-term effects of smoking on tooth loss after cessation among middle-aged Finnish adults: the Northern Finland Birth Cohort 1966 Study

Table 1 Distribution of the participants’ smoking status and other study variables (n = 6344)

	Never smoker* (n = 3062)		Former smoker** (n = 1525)		Current smoker*** (n = 1757)
	%	n	%	n	%	n
Gender (n = 6344)
Male	40	1213	52	786	52	916
Female	60	1849	48	739	48	841
Education (n = 6248)
Basic	4	114	8	112	11	197
Secondary	27	817	40	603	46	794
Higher	69	2094	52	783	43	734
Tooth brushing (n = 6324)
Once daily or less	28	862	38	573	45	782
At least twice daily	72	2191	62	947	55	969
Alcohol use, g/week (n = 6336)
Moderate to heavy drinker^a	5	162	11	165	19	327
Non-drinker or light drinker^b	95	2895	89	1359	81	1428
Diabetes (n = 6256)
Yes	3	103	4	65	5	85
No	97	2925	96	1423	95	1655
Number of teeth^c (n = 5540)
0–27	35	933	42	559	49	742
28–32	65	1763	58	785	51	758

*Those who had never smoked, or have smoked less than a year and did not smoke at the time of the survey
**Those who have smoked at least for a year but did not smoke at the time of the survey
***Those who smoked at the time of the survey
^a>230 g/week for men and >150 g/week for women
^b0–230 g/week for men and 0–150 g/week for women
^cIncluding third molars

ISSN: 1471-2458