MGAM and myasthenia gravis: Post-hoc pairwise comparisons with Bonferroni correction (adjusted α = 0.0167) revealed that the PPV in the US+/MG+ group was significantly higher than that in the US+/MG- group (34.7% vs. 21.6%, p* = 0.001) and the MG+/US- group (34.7% vs. 22.6%, p* = 0.002).