SiarnikP,KollarB,CarnickaZ,SurdaPet , Hsieh SW, Lai CL, Liu CK, Hsieh CF, Hsu CY al showed a significantly higher prevalence of OSA in the WUS compared with the NWUS population. While Koo et al. Koo BB, Bravata DM,Tobias LA,MackeyJS, Miech EJ, Matthias MS, Stahl SM, Sico JJ, Vaz Fragoso CA, Williams LS, Lampert R, Qin L, Yaggi HK found no difference in the prevalence of OSA between the WUS and NWUS groups. However, when genderstratified analysis was performed, a significantly higher prevalence of OSA was revealed in the WUS of only the male population.