Sentence examples for by variations in study from inspiring English sources

However, comparisons of response rates across these studies are complicated by variations in study design and in patients' baseline characteristics.

Inconsistencies among studies are again likely to be caused by variations in study methodology, particularly lack of detailed exposure assessment in some earlier studies.

However, prevalence results originating from other studies performed in Switzerland were significantly lower than our result which might be explained by variations in study design and definition of diagnosed diabetes.

Although our results conflict with two other recent studies of blood PCB concentration and secondary sex ratio, the discrepancy between these studies and ours may be explained, in part, by variations in study design and population.

However, comparisons of incidence rates for IS among different regions should be careful as these rates may be affected by variations in study methods, differences in genetic and lifestyle factors, and health care practices.

Comparability between studies is hampered by use of a range of different measures and by variations in study design, although there are clear anti-TNF class effects with relatively small differences in efficacy between agents.

The quality of evidence was limited by variation in study design, heterogeneity of details regarding treatment and outcomes, limited follow-up, and small sample sizes.

Investigation in this area is limited by small sample sizes, primarily due to difficulty in obtaining tissue samples, and by variation in study protocols and result interpretation.

The review may be limited by variation in study quality, especially with the earlier publications having lower STROBE scores (as is often seen when comparing older with more recent studies due to different standards).

Such inconsistencies may be explained by variations in the study population or whether the severity or presence of symptoms was evaluated.

The inconsistencies could not be explained by variations in intake per study site.