Inset plots can be used to “zoom in” on densely populated areas of a graph or to add extra relevant data in the form of, for example, distribution plots. However, the standard Stata command for combining plots, graph combine, does not permit this type of seamless integration. Each plot within a graph …

Background: Honorary authorship refers to the practice of naming an individual who has made little or no contribution to a publication as an author. Honorary authorship inflates the output estimates of honorary authors and deflates the value of the work by authors who truly merit authorship. This manuscript …

Background/purpose: For prevention of sarcopenia and functional decline in community-dwelling older adults, a higher daily protein intake is needed. A new e-health strategy for dietary counselling was used with the aim to increase total daily protein intake to optimal levels (minimal 1.2 g/kg/day, optimal …

We show how to estimate a Cronbach's alpha reliability coefficient in Stata after running a principal component or factor analysis. Alpha evaluates to what extent items measure the same underlying content when the items are combined into a scale or used for latent variable. Stata allows for testing the reliability …

In de loop der tijd hebben wij op zowel universiteits- als hogeschoolniveau studenten en collega’s zien worstelen en soms ook verdrinken in het computerprograma SPSS. Daar zijn vele oorzaken voor aan te wijzen. Dat gaan we hier niet doen. Wel willen we hier wijzen op een wijdverbreid misverstand. In …