Twenty - two patients with elevated prostate - specific antigen and biopsy - proven prostate carcinoma who underwent MRI of the prostate at 1.5 T with endorectal coil were divided into two groups: those who were treated with androgen deprivation, radiation therapy, or both, and a Gleason - matched control group who had not received such therapy. (sciencedaily.com)
82 % of Silver CREST students took a STEM AS Level, compared to 68 % of a statistically matched control group. (education-today.co.uk)
The pattern around the 1992 Cable Act is representative: I find that firms experiencing major regulatory change see their valuations rise 12 % compared to closely matched control groups. (hbr.org)