Density was categorised on a dichotomous scale (low/high) by an experienced radiologist blind to the purpose of the study (M.B).
In 1960 education was a four category variable, whereas from 1970 onwards it was categorised on a nine graded scale, allowing for more detailed information.
13 The cells were categorised on an Epics XL (Beckman-Coulter) fluorescence-activated cell-sorter (FACS).
We analysed all available cases as randomised using χ tests to compare dichotomous outcomes, t tests to compare continuous outcomes, and Kruskal Wallis tests to compare ordered categorical outcomes that is, categorised scores on the hospital anxiety and depression scale.
They were categorised into an ordinal scale (excellent, good, fair, poor and failure) by most studies.
Most included studies used closely related scores which were categorised into an ordinal scale of (excellent, good, fair, poor and failure).
Consumption will be categorised as an ordinal scale of no alcohol, below sensible limit, above limit, and binge drinking using the Department of Health definition 2007 [ 42].
After learning, new items are categorised based on a Pearson measurement comparing the firing behaviour of the second subnet on trained items, and the test item.
