Table 2

Epidemiological and socioeconomic characteristics of patients with amyotrophic lateral sclerosis and annual incidence and prevalence per 100 000 in Korea

Year	Incidence										Prevalence
Year	2011		2012		2013		2014		2015		2011		2015
Characteristics at first diagnosis	N	Inc*	N	Inc*	N	Inc*	N	Inc*	N	Inc*	N	Pre†	N	Pre†
Age
<40	38	0.14	27	0.10	23	0.09	22	0.09	30	0.12	75	0.28	63	0.25
40–49	64	0.73	73	0.83	62	0.70	73	0.82	63	0.71	195	2.22	225	2.52
50–59	139	1.99	157	2.10	147	1.90	162	2.03	177	2.16	382	5.46	509	6.20
≥60	264	3.43	392	4.93	342	4.10	385	4.44	409	4.50	685	8.89	973	10.71
Sex
Male	315	1.25	383	1.51	336	1.32	411	1.60	433	1.68	807	3.19	1072	4.15
Female	190	0.75	266	1.05	238	0.93	231	0.90	246	0.95	530	2.11	698	2.71
Income‡
High	178	1.09	235	1.42	184	1.10	247	1.47	244	1.44	468	2.85	611	3.61
Middle	195	0.85	246	1.07	221	0.95	247	1.06	265	1.14	494	2.15	624	2.68
Low	132	1.19	168	1.51	169	1.53	148	1.33	170	1.50	375	3.38	535	4.72
Region
Seoul city§	95	0.93	130	1.29	108	1.06	127	1.25	141	1.39	301	2.94	408	4.03
Metropolitan¶	124	0.96	130	1.03	144	1.11	153	1.17	156	1.19	331	2.57	402	3.07
Other areas**	286	1.05	389	1.38	322	1.16	362	1.29	382	1.35	705	2.58	960	3.38
Total	505	1.00††	649	1.28††	574	1.13††	642	1.25††	679	1.32††	1337	2.65††	1770	3.43††
Adjusted incidence/prevalence		0.79‡‡		0.97‡‡		0.83‡‡		0.89‡‡		0.92‡‡		2.07‡‡		2.38‡‡

*Incidence rate per 100 000 inhabitants in Korea.
†Prevalence rate per 100 000 inhabitants in Korea.
‡Income-based insurance contributions.
§Seoul metropolitan city.
¶Other metropolitan cities.
**Non-metropolitan area.
††Crude rate.
‡‡Age-adjusted incidence/prevalence (per 100 000 inhabitants) using WHO (2000–2025) world standard population.