Tag Prevalence

Epidemiology

The imperfect screening

Diagnostic screening Nobody is perfect. It is a fact. And a relief too. Because the problem is not to be imperfect, it is inevitable. The real problem is to believe one being perfect, to be ignorant of one’s limitations. And…

17/02/2015

Epidemiology

About chalk and cheese

Frequency measures Many times we find things that people insist on mixing and confusing though they are clearly different. This is when we often resort to the saying that they “are like chalk and cheese”, which actually means they are…

04/02/2014

Epidemiology

The table

Contingency tables There’re plenty of tables. And they play a great role throughout our lives. Perhaps the first one that strikes us during our early childhood is the multiplication table. Who doesn’t long, at least the older of us, how…

09/07/2013