Sentence examples for made comparison difficult from inspiring English sources

Methodologies differed markedly between studies, which made comparison difficult.

Recall bias and lack of research in Ethiopian context made comparison difficult.

However, large differences between countries and variations from year to year within each country made comparison difficult.

This systematic review explored the variation in study designs used in researching patients' perceptions of coercive measures, which made comparison difficult.

A second limitation is that amongst those who did, there were gaps in the reporting of the data collection processes and inconsistencies across the evaluations that made comparison difficult e.g. varying data collection time points, different health outcome tools, prescriptions calculated as rates, costs and total savings etc.

Also, strong growth in the same quarter last year made comparisons difficult.

Published population-based studies have used variable methodology, which has influenced findings and made comparisons difficult.

When SF-36 was used, the scales scores were not normalized, which made comparisons difficult.

The variation between the studies in definitions and methods used for data collection made comparisons difficult.

The number of genotypes in relation to the total number of isolates was high, which made comparisons difficult.

Several tentative QTL homologies have been identified, but differences in experimental design and genetic map resolution have made comparisons difficult.