A Statistical Study of the Methyl B₁₂ (Methycobal) in the Intravenous Drip Treatment for Sudden Deafness

Abstract

Out of 102 sudden deafness cases who were treated at Kanto Teishin Hospital, 57 cases were given intravenous drip of Methyl B₁₂ of 2000μg per day with other drugs as steroid and ATP. Methyl B₁₂ group and non-Methyl B₁₂ group were subdivided into 16 classes according to the two variables that were known to influence recovery from sudden deafness. Initial audiogram was divided into 4 classes and the time since onset was also divided into 4. Wilcoxon two sample tests were conducted on the hearing improvement between MB group and non-MB group in each class at 6 frequencies. MB group showed significantly greater improvement of hearing than non-MB group at 250 and 500Hz (p<0.05).