When placebo is absent, and another comparator is used it can be difficult to compare the effect of treatment across different trials.
Accordingly, it can be difficult to compare standards of living between countries that exhibit widely differing degrees of dispersion.
As well as charging different rates, providers calculate interest from different times so it can be difficult to compare costs fairly.
Ben Tobias, a spokesman for the Gainesville Police Department, wrote in an e-mail that it would be difficult to compare the arrest rate for football players in those years with the general arrest rate for Florida students.
So the numbers can be difficult to compare.
It can be difficult to compare firms with different basis for diversification.
Hence, it would be difficult to compare them on a common basis.
The prevalence of medication overuse may also be difficult to compare across studies using different data collection methods.
Since different reforms could impact on different groups of individuals, LATE effects may be difficult to compare across countries.
It would be difficult to compare grades associated with quizzes in the two pedagogical approaches due to their vast differences.
Unfortunately it can be difficult to compare results between studies given the variety of methodologies employed [19].
