A surprising finding in this study was a small mortality reduction in patients receiving erythropoietin.

This shift may result in mortality reduction.

Ellison's 1932 British study of measles showed a significant mortality reduction, but the patients were allocated by the ward to which they had been admitted.

Inclusion of any of these studies would have made little difference to our conclusions about mortality reduction.

Although this relationship is complex, mortality reduction may be a prerequisite to a decline in fertility.

The highest level of evidence is taken as mortality reduction in controlled, randomized clinical trials.

The highest level of evidence and greatest benefit from screening is mortality reduction in a randomized controlled trial.

This reflects mortality reduction and life extension (or avoidance of premature deaths).

In 1993, the institute required the screening trials to show statistically significant mortality reduction for women in their 40's.

(3) There was no evidence of mortality reduction.