Sentence examples for studies are difficult to from inspiring English sources

But such studies are difficult to conduct.

Large screening studies are difficult to do because they're expensive and require women to have two mammograms.

However, the results of these case studies are difficult to generalize.

These studies are difficult to perform due to practical considerations of time and cost.

With so many different factors involved, controlled studies are difficult to do.

The published studies are difficult to compare and to summarize because emphasis was put on different aspects of the disease.

However, comparisons of pressure ulcer prevalence across studies are difficult to interpret because of different reporting methods.

Longitudinal studies are difficult to conduct, however, contrary to short-term studies, they can uncover how conceptual development related to learning and understanding science occurs.

Additionally, the results of different studies are difficult to compare due to different empirical setups and data preprocessing, possibly leading to contradictory results.

Goodwin and Jamison (1990) pointed out that earlier studies are difficult to interpret due to a wide variation in the criteria used to define social class between studies.

Further research on the use of adhesion-reduction agents is essential to better understand their impact on clinical outcomes, recognising that such studies are difficult to undertake [12].