Table 3.

Age distribution of patients with idiopathic cardiomyopathy reported in the second survey, by sex

	Male		Female		Total
Age group (years)	n	%	n	%	n	%
Idiopathic dilated cardiomyopathy
0–9	12	0.9	16	3.0	28	1.4
10–19	12	0.9	10	1.9	22	1.1
20–29	38	2.7	16	3.0	54	2.8
30–39	100	7.1	13	2.4	113	5.8
40–49	204	14.6	55	10.3	259	13.4
50–59	360	25.7	85	16.0	445	23.0
60–69	417	29.8	178	33.5	595	30.8
70–79	201	14.4	128	24.1	329	17.0
≥80	56	4.0	31	5.8	87	4.5
Total	1400	100.0	532	100.0	1932	100.0
Idiopathic hypertrophic cardiomyopathy
0–9	11	0.7	14	2.2	25	1.2
10–19	55	3.7	31	4.8	86	4.0
20–29	39	2.6	31	4.8	70	3.3
30–39	61	4.1	20	3.1	81	3.8
40–49	152	10.2	50	7.8	202	9.5
50–59	348	23.4	101	15.7	449	21.0
60–69	506	34.0	184	28.6	690	32.3
70–79	267	17.9	163	25.3	430	20.1
≥80	51	3.4	50	7.8	101	4.7
Total	1490	100.0	644	100.0	2134	100.0
Idiopathic restrictive cardiomyopathy
0–9	1	7.1	1	8.3	2	7.7
10–19	2	14.3	2	16.7	4	15.4
20–29	3	21.4	0	0.0	3	11.5
30–39	1	7.1	0	0.0	1	3.8
40–49	0	0.0	0	0.0	0	0.0
50–59	1	7.1	1	8.3	2	7.7
60–69	5	35.7	3	25.0	8	30.8
70–70	1	7.1	4	33.3	5	19.2
≥80	0	0.0	1	8.3	1	3.8
Total	14	100.0	12	100.0	26	100.0