Table 1. Survey respondents on smoking status by survey period and sex.

	Baseline		5-year follow-up		10-year follow-up
	Number of participants	(%)	Number of participants	(%)	Number of participants	(%)
Men
Responder	47,044	(100)	38,636	(100)	36,951	(100)
Never smoker	11,290	(24.0)	8,797	(22.8)	8,159	(22.1)
Former smoker	11,257	(23.9)	12,143	(31.4)	14,395	(39.0)
Current smoker	24,497	(52.1)	17,696	(45.8)	14,397	(39.0)
Non-responder	0		6,670		5,952
Total	47,044		45,306		42,903
Women
Responder	51,703	(100)	44,980	(100)	43,783	(100)
Never smoker	47,649	(92.2)	41,352	(91.9)	40,102	(91.6)
Former smoker	882	(1.7)	1,348	(3.0)	1,795	(4.1)
Current smoker	3,172	(6.1)	2,280	(5.1)	1,886	(4.3)
Non-responder	0		5,881		5,775
Total	51,703		50,861		49,558