Fig. 1

Mean score among patients by MGFA class, indicating the degree of physician-assessed ADL impairment. ADL, activities of daily living; MG, myasthenia gravis; MGFA, Myasthenia Gravis Foundation of America; n, number of patients. Figure shows marginal mean score by MGFA classification with 95% confidence intervals. Total score ranged from 0 to 22, with higher score indicating greater impairment. p-values are from linear regression analysis to test association between MGFA class and score while adjusting for sex and Charlson Comorbidity Index. The number of patients was n = 367 for MGFA class I, n = 579 for MGFA class II, and n = 286 for MGFA class III/IV