Table 4

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

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).

Fuente et al.

Fuente et al. BMC Public Health 2013 13:39   doi:10.1186/1471-2458-13-39

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