2.1 Data sources and search strategy
We screened for researches in Web of Science, PubMed, EMBASE, and other
databases from January 1st, 2000 to September 1st, 2023 that involved
assessment of the prognostic relationship between vertigo and sudden
sensorineural hearing loss. The search terms used were ”sudden hearing
loss OR deafness, sudden OR sudden deafness OR hearing loss, sudden;
vertigo OR vertical OR spinning sensation OR sensation, spinning OR
sensations, spinning OR spinning sensations; and the third, both
strings.”