Table 2

Age and sex specific prevalence

Age	Male	n	Prevalence	Female	n	Prevalence	All	n	Prevalence
0–10	50500	0	0	47700	0	0	98200	0	0
11–20	46700	0	0	43400	1	2	90100	1	1
21–30	55400	0	0	51100	6	12	106500	6	6
31–40	52500	2	4	50100	10	20	102600	12	12
41–50	47400	3	6	47500	10	21	94900	13	14
51–60	35200	5	14	34700	14	40	69900	19	27
61–70	27800	4	14	29600	6	20	57400	10	17
71–80	18300	13	71	24000	12	50	42300	25	59
⩾81	7000	6	86	15100	8	53	22100	14	63
Total	340800	33	10	343200	67	20	684000	100	15