Table 2.

Number of participants; number of recalled events from the most recent year; number of recalled events from 1, 2, and 3 years ago; and total number of recalled events per age group

Age Group	N	Most recent year	1 year ago	2 years ago	3 years ago	Total
16–20 years	159	569	288	141	75	1,587
21–25 years	489	1,529	830	323	261	4,890
26–30 years	131	351	195	70	41	1,307
31–35 years	116	332	139	39	32	1,156
36–40 years	66	133	75	27	19	660
41–45 years	29	66	25	10	5	289
46–50 years	20	41	19	5	6	199
51–55 years	25	53	17	7	8	249
56–60 years	32	44	15	8	10	319
61–65 years	22	26	10	3	4	220
Total	1,089	3,144	1,613	633	461	10,876