نتایج جستجو برای: randomized clinical study
تعداد نتایج: 4792268 فیلتر نتایج به سال:
BACKGROUND Recent evidence has highlighted deficiencies in clinical trial protocols, having implications for many groups. Existing guidelines for randomized clinical trial (RCT) protocol content vary substantially and most do not describe systematic methodology for their development. As one of three prespecified steps for the systematic development of a guideline for trial protocol content, the...
abstract background: premenstrual syndrome (pms) can cause problems in daily work and relationships. materials and methods: eighty‑six women were randomly assigned to two intervention groups and one control group. patients were asked to fill out the pms daily symptoms record for 2 months, and then the participants were randomly assigned to one of the three study groups. medical intervention was...
abstract backgrounds: subacromial impingement is a common cause of shoulder pain and many patients with this condition recover with conservative management. the most commonly used modalities of nonoperative treatment include activity modification, anti-inflammatory medication and subacromial injection of steroid and ultrasound and physical therapy programs. this study assessed the value of phys...
background: this study aimed to assess the effectiveness of topiramate, a glutamate-modulating agent, in patients with treatment-resistant obsessive-compulsive disorder (ocd) as an adjunct to serotonin reuptake inhibitors (sris). materials and methods: thirty-eight patients with refractory ocd, were randomly assigned to receive topiramate or placebo. this study was designed as a 12-week, double...
glycine allele at codon 16 has previously been associated with the increase in asthma severity, bronchial hyperresponsiveness and also the increase in inhaled corticosteroid dependence. this study was designed to evaluate the genetic alleles in mild asthma.thirty-four patients with diagnosis of mild asthma (fev1 ≥ 80%, positive methacholine test) and body mass index (bmi ≤ 30 kg/m2) were includ...
lamotrigine has been used widely in the treatment of partial and secondary generalized seizures. in this study use of lamotrigine as monotherapy for the newly diagnosed primary generalized tonic–clonic seizure has been investigated and compared with carbamazepine. after dose escalation (3 weeks for carbamazepine and 6 weeks for lamotrigin), patients were followed every 4 weeks for the first 16 ...
a recent randomized clinical trial showed buspirone efficacy in the treatment of attention-deficit/hyperactivity disorder (adhd) in children. however, results from a recent multi-site controlled clinical trial of transdermal buspirone failed to separate it from placebo in a large sample of children with adhd. therefore, due to these inconsistent findings, this study was designed to assess the e...
IMPORTANCE The discontinuation of randomized clinical trials (RCTs) raises ethical concerns and often wastes scarce research resources. The epidemiology of discontinued RCTs, however, remains unclear. OBJECTIVES To determine the prevalence, characteristics, and publication history of discontinued RCTs and to investigate factors associated with RCT discontinuation due to poor recruitment and w...
We apply Bayesian decision analysis (BDA) to incorporate patient preferences in the regulatory approval process for new therapies. By assigning weights to type I and type II errors based on patient preferences, the significance level (α) and power (1-β) of a randomized clinical trial (RCT) for a new therapy can be optimized to maximize the value to current and future patients and, consequently,...
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