We sought to enrol a representative sample of smokers, not just
those seeking help to stop smoking. Participant characteristics
were as follows: 55.7% were women, the mean (SD) age was 41.3
(11.7) years, 96.2% were white, 49.3% had been educated up to age
16 years only, 43.3% were from non-manual occupational groups.
The participants smoked a mean (SD) of 19.5 (11.4) cigarettes per
day with a mean (SD) Fagerstrom Test for Nicotine Dependence
(FTND) of 4.2 (2.3), which means that these smokers were slightly