In humans, the limited number of patients as well as the heterogeneity of the procedure led to the difficult evaluation of the efficiency of the different treatments.
As a former policeman, Kalivoda had passed a difficult psychological evaluation as part of the police selection procedure.
The faint bands on DGGE gels are of difficult evaluation and often ignored [3, 10, 18, 19], while sequencing of the intense bands has sometimes revealed the presence of more than one species [10].
The general view is that it is too difficult in an evaluation of such a broad scope to dig deep into each activity and gather sufficient evidence to make impact statements.
He flourished at a time that has been judged by historians as on the whole decadent, fideistic, and radically skeptical, in contrast to the period in which, for example, Thomas Aquinas worked (d. 1274); this historical viewpoint already made difficult an objective evaluation of Rimini.
We did not weigh each study by a quality score, because no such score has received general agreement for use in a meta-analysis, especially of observational studies, making more difficult the evaluation of its usefulness (Altman, 2001).
Extensive tenosynovial invasion can complicate the assessment of altered tendons so that even a complete tendon rupture can become a diagnostic challenge, because tendon edema and inhomogeneous echo texture make difficult the evaluation of tendon continuity and tenosynovitis.
In Things to Come, Isabelle Huppert plays Nathalie, a long-tenured philosophy teacher at a Parisian university whose comfortable existence gets upended by the revelation of her husband's adultery and leads her into a difficult process of self-evaluation.
These conditions rendered direct comparison between therapeutic processes and therapeutic regimens more difficult despite a systematic evaluation of the data.
Third, ratings are a difficult cognitive task, requiring evaluation of the intensity of preference on a predetermined numerical scale [14].
