Table 1

Demographic characteristics of, and number within, each group

Group number	Age group	Gender	Social grade	Number in group
1	16–17	Female	ABC1	7
2	18–24	Female	C2DE	7
3	25–35	Female	ABC1	6
4	36–50	Female	C2DE	6
5	25–35	Female	C2DE	6
6	36–50	Female	ABC1	5
7	18–24	Female	ABC1	5
8	16–17	Female	C2DE	7
9	36–50	Male	ABC1	6
10	50+	Female	C2DE	7
11	36–50	Male	C2DE	5
12	50+	Male	C2DE	6
13	50+	Female	ABC1	6
14	50+	Male	ABC1	7
15	25–35	Male	C2DE	6
16	18–24	Male	ABC1	7
17	16–17	Male	C2DE	6
18	18–24	Male	C2DE	5
19	16–17	Male	ABC1	5
20	25–35	Male	ABC1	5