Sentence examples for makes comparisons difficult from inspiring English sources

Heterogeneity of study designs and definitions makes comparisons difficult.

Other colleges and universities, however, have chosen different targets, which makes comparisons difficult.

Continual revision of Ofsted's frameworks makes comparisons difficult and judgments inconsistent, she says.

There is much variation in the design of antifeedant tests between laboratories, which often makes comparisons difficult.

A range of health-related quality-of-life instruments were used in the studies, which makes comparisons difficult.

No competitor has the same global reach or trades as many different commodities, which makes comparisons difficult.

Different testing organizations also used different time-lengths in measuring the chemicals' effect on rodents, in some cases 18 months, in others 24 months, which makes comparison difficult.

Second, the diversity of organizations makes comparison difficult: how could we possibly compare the work of the University of Chicago to a homeless shelter in Albuquerque or to Greenpeace?

This makes comparison difficult.

Furthermore, absence of a control cohort beyond the initial 12 20 week placebo-controlled phase makes comparison difficult.

The classification of AEs in earlier studies was not uniform, which makes comparison difficult.