After we properly normalize the measurements with respect to age, gender, geography and economic considerations, there remains little evidence of a difference between the two groups.
to reduce to variations by excluding irrelevant aspects
Hyphenation
to re·duce to variations by ex·clud·ing ir·rel·e·vant aspects
Turkish pronunciation
tı ridus tı verieyşınz bay îkskludîng îrelıvınt äspekts