nonrandomized trial

nonrandomized trial

Nonrandomized control trial Clinical trials A study in which Pts are assigned to an arm–intervention, nonintervention–in a nonrandom fashion. Cf Randomized trial.
References in periodicals archive ?
Comparison between transcatheter and surgical closure of secundum atrial septal defect in children and adults: results of a multicenter nonrandomized trial. J Am Coll Cardiol 2002; 39: 1836-44.
TORONTO -- Using an automated photorefractor-based vision screening in preschool-age children reduced referrals to ophthalmologists and optometrists by one-third, compared with standard chart-based screening, according to a nonrandomized trial conducted in Boston.
A recent quasi-experimental, retrospective, nonrandomized trial compared a preoperative decontamination intervention--2 percent chlorhexidine washcloths and 0.1 2 percent chlorhexidine oral rinse the night before and morning of surgery and the use of 5 percent PVP-I intra-nasally once the morning of surgery--to historical controls without a decontamination protocol to evaluate the impact on SSI rates for patients undergoing elective orthopedic procedures with hardware implantation.
In a nonrandomized trial of 122 patients Schirmer et al found no significant difference in hospital stay.
This effect was identified in a randomized tri al, a nonrandomized trial, and an observational study.
Long-term cardiac outcomes of treating chronic Chagas disease with benznidazole versus no treatment: a nonrandomized trial. Ann Intern Med 2006; 144: 724-734.
(3) In 1 nonrandomized trial of 74 patients with a history of vasovagal syncope, amitriptyline prevented recurrent episodes.
In the first nonrandomized trial, 20 of 27 women at term who received electroacupuncture gave birth between 39 weeks 3 days and 40 weeks, compared with 47 of 102 women in the control group.
International study on syncope of uncertain etiology-2 was a nonrandomized trial, but recently its results were confirmed by the randomized International study on syncope of uncertain etiology-3 trial10.
This effect was identified in a randomized trial, a nonrandomized trial, and an observational study.
One study examined the efficacy of oxcarbazepine in an open, nonrandomized trial of 12 patients with mild to moderate mania.
The program improved birth weights in a nonrandomized trial of 458 low-income women at two institutions.