Multivariate modeling of factors associated with changes
in individuals ’ noise exposure over time
We performed a further analysis to determine whether individual
factors could explain an individual ’ s noise reduction experience over
the fi rst six months of use of the monitoring device. In a multivariate
model, neither age, gender, HPD type, baseline hearing, nor baseline
noise exposure level (average exposure level in fi rst month of
downloading) were signifi cantly associated with the rate of decrease
in noise over-exposures that individuals achieved.