[Conditional probability analysis between tinnitus and comorbidities in patients attending the National Rehabilitation Institute-LGII in the period 2012-2013].

Autor:	Gómez Toledo V; Servicio de Audiología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra (INR-LGII), Ciudad de México, México., Gutiérrez Farfán I; Servicio de Audiología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra (INR-LGII), Ciudad de México, México., Verduzco-Mendoza A; Servicio de Neurobiología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra (INR-LGII), Ciudad de México, México., Arch-Tirado E; Servicio de Neurobiología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra (INR-LGII), Ciudad de México, México. Electronic address: arch@terra.com.mx.
Jazyk:	Spanish; Castilian
Zdroj:	Cirugia y cirujanos [Cir Cir] 2017 May - Jun; Vol. 85 (3), pp. 225-233. Date of Electronic Publication: 2016 Oct 13.
DOI:	10.1016/j.circir.2016.09.002
Abstrakt:	Background: Tinnitus is defined as the conscious perception of a sensation of sound that occurs in the absence of an external stimulus. This audiological symptom affects 7% to 19% of the adult population. The aim of this study is to describe the associated comorbidities present in patients with tinnitus usingjoint and conditional probability analysis. Patients: Patients of both genders, diagnosed with unilateral or bilateral tinnitus, aged between 20 and 45 years, and had a full computerised medical record, were selected. Methods: Study groups were formed on the basis of the following clinical aspects: 1) audiological findings; 2) vestibular findings; 3) comorbidities such as, temporomandibular dysfunction, tubal dysfunction, otosclerosis and, 4) triggering factors of tinnitus noise exposure, respiratory tract infection, use of ototoxic and/or drugs. Results: Of the patients with tinnitus, 27 (65%) reported hearing loss, 11 (26.19%) temporomandibular dysfunction, and 11 (26.19%) with vestibular disorders. When performing the joint probability analysis, it was found that the probability that a patient with tinnitus having hearing loss was 2742 0.65, and 2042 0.47 for bilateral type. The result for P (A ∩ B)=30%. Bayes' theorem P (AiB) = P(Ai∩B)P(B) was used, and various probabilities were calculated. Therefore, in patients with temporomandibulardysfunction and vestibular disorders, a posterior probability of P (Aі/B)=31.44% was calculated. Conclusions: Consideration should be given to the joint and conditional probability approach as tools for the study of different pathologies. (Copyright © 2016 Academia Mexicana de Cirugía A.C. Publicado por Masson Doyma México S.A. All rights reserved.)
Databáze:	MEDLINE
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