Table 3.

Socio‐demographic characteristics by smoking status and year

	Current smoker		Non‐smoker
	2008	2017	2008	2017
Age, mean (SD)	40.0 (15.85)	41.5 (16.33)	47.6 (19.08)	48.2 (19.25)
Sex, % female (n)	49.6 (2005)	47.9 (1568)	52.0 (7700)	51.6 (8640)
Social grade, % ABC1 (n)	38.3 (1549)	38.4 (1257)	60.2 (8921)	58.4 (9783)
Region, % (n)
North	35.4 (1431)	32.0 (1047)	26.8 (3966)	27.5 (4613)
Central	31.5 (1275)	29.4 (962)	30.9 (4582)	30.4 (5088)
South	33.1 (1340)	38.6 (1264)	42.3 (6259)	42.1 (7049)

SD = standard deviation.