Table 4.

ORs and 95% CIs from logistic regression models of whether ever smokers still smoke nowadays

	Model 1 (n=5525)	Model 2 (n=5525)	Model 3 (n=5525)	Model 4 (n=5280)
Health literacy
Adequate	Reference	Reference	Reference	Reference
Limited	1.493 (1.307 to 1.704)***	–	1.338 (1.165 to 1.536)***	1.194 (1.034 to 1.378)*
General cognitive ability†	–	0.772 (0.718 to 0.829)***	0.805 (0.747 to 0.868)***	0.878 (0.810 to 0.951)**
Age	0.952 (0.945 to 0.958)***	0.943 (0.936 to 0.951)***	0.943 (0.936 to 0.950)***	0.938 (0.929 to 0.947)***
Age2	0.999 (0.999 to 1.000)**	0.999 (0.999 to 1.000)**	0.999 (0.999 to 1.000)**	0.999 (0.998 to 1.000)**
Sex
Female	Reference	Reference	Reference	Reference
Male	0.744 (0.655 to 0.845)***	0.707 (0.622 to 0.803)***	0.714 (0.628 to 0.811)***	0.755 (0.661 to 0.863)***
Age left full-time education
14 years or under	–	–	–	Reference
15–16 years	–	–	–	0.734 (0.593 to 0.908)**
17–18 years	–	–	–	0.515 (0.384 to 0.687)***
19 years or older	–	–	–	0.432 (0.308 to 0.578)***
Occupational class
Managerial and professional	–	–	–	Reference
Intermediate	–	–	–	1.390 (1.144 to 1.689)***
Routine and manual	–	–	–	1.614 (1.375 to 1.961)***

*p<0.05, **p<0.01, ***p<0.001.

†ORs (95% CI) for general cognitive ability are the odds of reporting being a current smoker for a 1 SD increase in general cognitive ability.

Age ², Age squared.