Table 3.

Incidence rate and prevalence estimates of MG in the USA from Medicaid claims data (2017).

	2017 US population (ACS)		Incidence (cases per 1,000,000 person-years)				Prevalence (cases per 1,000,000 persons)
	Females	Males	Females	Males	Overall	Standardizeda	Females	Males	Overall	Standardizeda
All	129,341,135	122,729,360	51.67	40.40	47.67	49.68	194.75	158.13	181.85	203.67
Age group, years
18–34	37,214,265	38,571,882	12.88	11.80	12.52	12.33	91.72	58.97	81.42	75.05
35–44	20,646,170	20,471,735	30.62	24.37	28.47	27.51	182.87	105.39	155.84	144.30
45–54	21,440,066	20,890,889	61.65	21.42	45.29	41.80	244.20	160.61	209.02	202.95
55–64	21,745,371	20,274,405	68.73	77.36	72.40	72.89	292.54	261.06	278.61	277.35
≥65	28,295,263	22,520,449	123.74	94.28	114.89	110.68	392.06	372.04	385.73	383.19
Race
Non-Hispanic White	81,892,645	78,232,690	50.08	51.67	50.64	50.86	197.96	156.76	183.51	177.83
African American	16,514,154	14,546,359	58.67	31.40	49.63	45.90	221.04	163.32	202.31	194.01
Hispanic	20,055,692	20,240,231	18.19	34.45	23.81		115.86	185.83	137.82
Other			43.56	20.88	33.78		130.69	147.52	137.84

^aStandardized to the 2017 ACS US population. Standardized rate only reported for non-Hispanic White and African American people.

ACS, American Community Survey; MG, myasthenia gravis.