Exact(1)
Usually, two categories of patients (responders and non-responders) are compared.
Similar(59)
In the Presbyterian churches of British American background, there are usually four categories of church government.
Auden in his introduction to his Collected Poems (well, the first one of his collected poems), said in a writer's work there are usually four categories – he loved categorising things.
There are usually two main categories: passive suppression (PS) and active cancelation [13].
There are usually two 'problem' categories that your skin may fall under, as well as your skin type.
This economic evaluation usually considers two categories of costs: direct and indirect costs.
Globally, predictors of PPD vary as well, however usually four main categories emerge; socio-economic, demographic, maternal and social support.
The definition usually draws on two categories: bad behaviour and unconventional life choices.
Detonating explosives are usually subdivided into two categories, primary and secondary.
For me fighting games have usually fallen into two categories: impossibly arcane (the more common) or mindlessly simple.
With the exception of Julie Christie in Away From Her, OAPs usually fall into two categories on screen.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com