Silica and diesel exposures were modelled as cumulative time-weighted measures.
This paper presents methods to evaluate the reliability and optimize the maintenance of engineering systems that are damaged by shocks or transients arriving randomly in time and overall degradation is modeled as a cumulative stochastic point process.
Tests for trend were based on the p-value of the coefficient of the natural log of cumulative exposure modeled as a continuous time-dependent variable in a Cox regression model that included the same covariates as the corresponding model of cumulative PFOA exposure as a categorical variable.
Intersubject variability (IIV) was modeled as an additive variability on cumulative probability of PGA.
Results are presented graphically in cause-specific cumulative hazard plots, as CPE colonization is modeled as a time-varying risk factor, and cumulative incidence functions cannot be interpreted for time-varying risk factors (25).
Subsequently, the damage and deformation induced by creep and fatigue have been modeled as functions of applied stress and cumulative plastic strain, individually.
In this paper, both the duration and the cost of an activity are modeled as random variables, and accordingly, the cumulative cost at each time point also becomes a random variable along a project's progress.
Time-dependent cumulative exposure was modeled as lags of 0, 5, and 10 years, as continuous, and in quartiles.
In secondary analyses, the FNRS was modeled as a repeated measure using the cumulative average diet approach (Hu et al., 1999).
Cumulative prediction accuracy was modeled as a function of FFPE sample age.
