Univariate and multivariate Tobit log-linear regression models were used to evaluate variables associated to metal levels. The use of Tobit models allows for an estimate of the effect despite having a large number of samples below the LOD.
Univariate and multivariate Tobit log-linear regression modelswere used to evaluate variables associated to metal levels. Theuse of Tobit models allows for an estimate of the effect despite havinga large number of samples below the LOD.