Table 1

Sample composition of focus groups: number, age, social grade and smoking status

Group	Number	Age	Social grade	Smoking status
1	6	15–17	C2DE	Occasional
2	6	15–17	C2DE	Non-smokers
3	6	18–24	ABC1	Occasional
4	6	12–14	ABC1	Non-smokers
5	7	15–17	ABC1	Non-smokers
6	7	18–24	ABC1	Non-smokers
7	6	12–14	C2DE	Non-smokers
8	6	12–14	C2DE	Non-smokers
9	6	12–14	ABC1	Non-smokers
10	6	15–17	ABC1	Occasional
11	6	18–24	C2DE	Non-smokers
12	7	18–24	C2DE	Occasional