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Table 4 Bivariate and multivariate linear regression analysis for PTA (500 Hz-8000 Hz) outcome

From: Auditory dysfunction associated with solvent exposure

Bivariate model   Multivariate model Final multivariate model
Characteristic   Beta p Beta p Characteristic Beta p
Age   0.411 p<0.0001 0.089 0.894 Age 0.365 p<0.0001
Male   0.056 0.594 −0.248 0.093    
Solvent exp. EXP 0.332 0.001 −0.122 0.855 EXP 0.296 0.002
  NEXP Reference       
Tenure   0.415 p<0.0001 −0.068 0.834    
Risk factors Cigarettes 0.197 0.158 0.246 0.083    
  Alcohol 0.200 0.152 0.278 0.043    
  ShootWP −0.060 0.635 0.040 0.754    
  ShootNP −0.035 0.786 0.162 0.246    
  No Shoot Reference       
  Pastnoise 0.174 0.095 0.117 0.377    
Interactions       Interactions   
Age*solvent     0.627 0.581    
  1. Note. Solvent exp: EXP: solvent-exposed group, NEXP: non-exposed group (reference); Tenure: number of years working at the factory exposed to solvents; Cigarettes: Number of cigarettes smoked per week; Alcohol: Number of drinks per month; Shoot WP: history of shooting practice wearing hearing protection; ShootNP: history of shooting practice without wearing hearing protection; No shoot: absence of shooting practice (reference); Pastnoise: history of previous occupational noise exposure; Interaction Age*solvent: factor of age times solvent group (exposed versus non-exposed).