Hearing threshold shifts, white-cell count and smoking status in working men.
The association between cardiovascular risk factors and high-frequency hearing loss (HFHL) was examined using medical records from 699 employees with low workplace noise exposure.
High-frequency hearing (averaged frequencies of 4000,6000 and 8000 Hz) was significantly associated with white-blood-cell (WBC) count, smoking status, mean corpuscular volume and the globulin/albumin ratio, especially in men ¾40 years old.
The association with WBC count remained significant after controlling for smoking, cholesterol, blood pressure, and determinants of blood viscosity.
An increase in WBC count of 103/mm3 was associated with a 1.9 decibel (dB) decline in hearing (95% Cl : 0.9,3.0).
Controlling for WBC count reduced the association between high-frequency hearing loss and smoking.
Ever-smokers (former and current) compared with never-smokers demonstrated a 6.8 dB decline in hearing (95% Cl : 2.4,11.1).
Associations between HFHL and cardiovascular risk factors are most apparent in younger adults with less cumulative noise exposure.
HFHL may be a population marker for susceptibility to cardiovascular and cerebrovascular disease.
Mots-clés Pascal : Surdité, Etiologie, Facteur risque, Appareil circulatoire, Numération, Leucocyte, Population active, Homme, Normal, Haute fréquence, Epidémiologie, ORL pathologie, Trouble audition
Mots-clés Pascal anglais : Hearing loss, Etiology, Risk factor, Circulatory system, Numeration, Leukocyte, Labour force, Human, Normal, High frequency, Epidemiology, ENT disease, Auditory disorder
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0469640
Code Inist : 002B10D02. Création : 01/03/1996.