Table 1.

The sample structure.

Age Group	Male Wave 1	Male Wave 2	Male Wave 3	Male Total	Female Wave 1	Female Wave 2	Female Wave 3	Female Total
15–29	29	40	29	358	24	19	28	329
30–39	48	45	37	295	36	29	40	290
40–49	40	25	37	229	30	27	30	226
50–59	43	44	45	245	42	39	40	265
60–69	42	55	63	353	82	86	86	466
Total	202	209	211	622	214	200	224	638