non-comparability
The main difficulty is the small number of cases and their lack of comparability.
We have made some suggestions on how to improve the study design and comparability of data.
The auditors have warned against investors expecting too much comparability between figures in annual reports.
Adjustments have to be made to ensure comparability.

SMART Vocabulary: related words and phrases

Similar and the same
adjacent
affinity
akin
alike
allied
ballpark
be no better than (a) somethingidiom
congruent
ditto
equivalency
equivalent
equivalent of something
equivalent to something
equivalently
non-distinctive
not make any differenceidiom
of the kindidiom
one and the sameidiom
respecter
synonymous