At Arms, about 300 of the 600 employees agreed to participate in the study.

First, the ad said nothing about how many women had participated in the study.

Only a small proportion of our patients could and would participate in the study.

He helped recruit women to participate in the new study.

Over 350 users and 15 staff members participated in the study.

A total of 266 freshmen students from a high school science class participated in the study.

So the researchers are doing additional studies by following the women who agree to participate in the study over time.

A nearly equal number of men and women participated in the study.

A total of 521 unrelated individuals participated in the study.

The federal government has agreed to participate in the study.