[Risk factors for recurrence of benign paroxysmal positional vertigo: a Meta analysis].

To investigate the risk factors for recurrence after otolith reduction of benign paroxysmal positional vertigo by Meta analysis.The relevant literatures of risk factors for recurrence of BPPV were searched by the database of PubMed, Embase, OVID, Springer, Proquest. Revman 5.3 software was used to perform Meta analysis of the included literature. A total of 15 articles were included in the final analysis and a total of 4 477 cases were included. Meta analysis results showed: the recurrent after otolith reduction of BPPV in patients with the hyperlipidemia and Meniere's disease increased significantly, compared to the patients without the hyperlipidemia and Meniere's disease, difference was statistically significant［=1.74, 95%(1.14-2.65),=0.01;=4.57,95%(2.78-7.52),<0.01］. There was no significant difference in the recurrence after otolith reduction of BPPV in patients with diabetes and migraine compared without diabetes and migraine［=1.14,95%(0.84-1.54),>0.05; =0.99, 95%(0.66-1.47),>0.05］.Hyperlipidemia and Meniere's disease are risk factors for the recurrence after otolith reduction of BPPV.