APOE4 carriers had significantly lower overall AHI, RDI, and ODI; REM AHI, as well as lower NREM AHI and ODI when compared to APOE4 non-carriers (all p < 0.05; see Table S4), indicating that in this cohort, APOE4 carriers did not have greater OSA severity compared to non-carriers. The gene discussed is APOE; the disease is obstructive sleep apnea syndrome.