Sentence examples for proved difficult to compare from inspiring English sources

It therefore proved difficult to compare the equivalent benefits of each study.

Because of expected variations in both numerators and denominator, it proved difficult to compare this EIR with IR found in previous research [ 30, 32, 34, 38, 53, 54].

They have therefore proved difficult to compare using conventional sequence analysis techniques, and functions remain to be elucidated for most of them.

It will prove difficult to compare the opening of "Into Darkness" against the launch Abrams' 2009 "Star Trek," because the latter debuted at 7 p.m. on a Thursday.

Neutrality proved difficult to maintain, though.

Alas, it proved difficult to find.

Genocide has proved difficult to prosecute.

The effect proved difficult to measure.

Spectacular early results proved difficult to sustain.

Yet reform proved difficult to implement.

The furlough plan proved difficult to enforce.