Table 2.
Incidence rate and prevalence estimates of MG in the USA from commercial and Medicare 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 | 53.89 | 55.30 | 54.55 | 68.48 | 202.19 | 191.37 | 197.07 | 316.35 |
| Age group, years | ||||||||||
| 18–34 | 37,214,265 | 38,571,882 | 21.79 | 5.24 | 13.69 | 13.37 | 75.03 | 22.35 | 49.48 | 48.22 |
| 35–44 | 20,646,170 | 20,471,735 | 36.66 | 22.83 | 30.22 | 29.78 | 143.66 | 67.97 | 108.06 | 105.98 |
| 45–54 | 21,440,066 | 20,890,889 | 39.86 | 42.92 | 41.30 | 41.38 | 197.26 | 116.93 | 159.46 | 157.62 |
| 55–64 | 21,745,371 | 20,274,405 | 74.00 | 95.29 | 83.94 | 84.28 | 280.14 | 335.07 | 305.81 | 306.65 |
| ≥65 | 28,295,263 | 22,520,449 | 166.54 | 222.83 | 191.89 | 191.49 | 782.27 | 1,333.88 | 1,030.27 | 1,026.74 |
aStandardized to the 2017 ACS US population.
ACS, American Community Survey; MG, myasthenia gravis.