Choosing prepositions for writing between and within region disparities

We are working on an methodology, allowing to detect disparities between the regions and within/inside the regions. For example:

• There is a two-fold difference in salary between region A and B - this is a between region disparity.

• Only 2% of residents receive a median salary in region C and 70% in region D - this is a within/inside region disparity.

Does the following sentence, using words between and within carry the same message:

Novel methodology for identifying between and within region disparities in income

Or should I use other words?

Solution 1:

You can't really use the prepositions between and within as adjectives. I would suggest going with Latin prefixes here, using inter-regional and intra-regional:

Novel methodology for identifying inter- and intra-regional disparities in income

The words do actually mean between and within and provide useful combined forms.

If you re-order your title, you can use between and within:

Novel methodology for identifying disparities in income between and within regions