The command roctg allows visualizing sensitivity (Se) and specificity (Sp) curves according to the range of values of a new diagnostic test, given a "true" state of an event, the reference test. On request,several options for displaying Se and Sp estimates in, or enhancements for, the graphs are...

The command kapci calculates 100(1 - alpha) percent confidence intervals for the kappa statistic using an analytical method in the case of dichotomous variables or bootstrap for more complex situations. For instance, kapci allows estimating CI f or polychotomous variables using weighted kappa or...

Several significant developmental and socialisation processes in the life of children and adolescents take place in the area where they live. The extent to which they can feel and be safe in this environment is an important component of the success of those processes. This study highlights the...

We evaluate the association between income inequality (Gini index) and oral health and in particular the role of alternative models in explaining this association. We also studied whether or not income at the individual level modifies the Gini effect. We used data from an oral health survey in...