نتایج جستجو برای: randomized clinical trial rct

تعداد نتایج: 1464736  

Journal: :BMC Health Services Research 2005
Zelda Di Blasi Fay Crawford Colin Bradley Jos Kleijnen

BACKGROUND A significant proportion of trial participants respond to placebos for a variety of conditions. Despite the common conduct of these trials and the strong emphasis placed on informed consent, very little is known about informing participants about their individual treatment allocation at trial closure. This study aims to address this gap in the literature by exploring treatment belief...

Journal: :Journal of the American Board of Family Medicine : JABFM 2007
Pamela W Lee Allen J Dietrich Thomas E Oxman John W Williams Sheila L Barry

BACKGROUND Re-Engineering Systems for Primary Care Treatment of Depression (RESPECT-D) sought to improve patient outcomes by disseminating the 3-component model of depression management. The purpose of this study was to determine whether an integrated model of depression management continued to be used by primary care clinicians after the end of a randomized controlled trial (RCT). METHODS A ...

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2012
William J Catalona

As aprostate cancer expert, I amdisturbed by the recent U.S. Preventive Services Task Force (USPSTF) draft recommendation against prostate cancer screening in asymptomatic men (1) and hope to clarify information from recent studies on this issue. Implementation of the USPSTF draft recommendation has the potential to cause great harm. Prostate cancer is a leading cause of cancer death, and count...

Journal: :Nurse education today 1999
G Rolfe

Evidence-based medicine was first proposed in the early 1990s as a means of integrating clinical expertise with the best evidence from research. It has recently gained a foothold in nursing, where despite calls for a broad and nursing-oriented definition of what should count as evidence, it appears to be propounding the randomized controlled trial (RCT) as the gold standard. This paper challeng...

Journal: :Vaccine 2003
Joanne M Langley Scott A Halperin Bruce Smith

We sought to measure the anxiety felt by parents at the time of entry into a randomized controlled vaccine trial, and to determine if anxiety level was associated with parental demographic variables or past experience. The children were 2-month-old infants entering a randomized controlled clinical trial (RCT) of a diphtheria-tetanus toxoid-acellular pertussis vaccine adsorbed with Haemophilus i...

2012
Benjamin Kasenda Erik B von Elm John You Anette Blümle Yuki Tomonaga Ramon Saccilotto Alain Amstutz Theresa Bengough Jörg Meerpohl Mihaela Stegert Kari A O Tikkinen Ignacio Neumann Alonso Carrasco-Labra Markus Faulhaber Sohail Mulla Dominik Mertz Elie A Akl Dirk Bassler Jason W Busse Ignacio Ferreira-González Francois Lamontagne Alain Nordmann Rachel Rosenthal Stefan Schandelmaier Xin Sun Per O Vandvik Bradley C Johnston Martin A Walter Bernard Burnand Matthias Schwenkglenks Heiner C Bucher Gordon H Guyatt Matthias Briel

BACKGROUND Randomized controlled trials (RCTs) may be discontinued because of apparent harm, benefit, or futility. Other RCTs are discontinued early because of insufficient recruitment. Trial discontinuation has ethical implications, because participants consent on the premise of contributing to new medical knowledge, Research Ethics Committees (RECs) spend considerable effort reviewing study p...

Journal: :بینا 0
محمدعلی جوادی ma javadi shahid beheshti university of medical sciencesدانشگاه علوم پزشکی شهید بهشتی سپهر فیضی s feizi shahid beheshti university of medical sciencesدانشگاه علوم پزشکی شهید بهشتی محمدرضا مشیدی فارسانی mr jamshidi-farsani shahid beheshti university of medical sciencesدانشگاه علوم پزشکی شهید بهشتی

purpose: to compare the outcomes of deep anterior lamellar keratoplasty (dalk) using the big-bubble technique with that of penetrating keratoplasty (pk) in patients with keratoconus. methods: this double-blind clinical trial included patients with moderate to advanced keratoconus and poor spectacle-corrected visual acuity or contact lens intolerance. refractive errors, best corrected visual acu...

2016
Dan-Ni Yao Chuan-Jian Lu Ze-Huai Wen Yu-Hong Yan Mei-Ling Xuan Xiao-Yan Li Geng Li Ze-Hui He Xiu-Li Xie Jing-Wen Deng Xin-Feng Guo Ai-Hua Ou

BACKGROUND To provide evidence that the Chinese herbal medicine (CHM) PSORI-CM01 combined with Western medicine reduces the relapse rate of psoriasis vulgaris (PV), we plan to conduct a large-scale randomized control trial (RCT). In order to improve and perfect the RCT, this pilot study was designed to determine the feasibility and the potential of a modified protocol for the full-scale RCT. ...

2015
José W. Geurts Jan-Willem Kallewaard Alfons Kessels Paul C. Willems Henk van Santbrink Carmen Dirksen Maarten van Kleef

BACKGROUND Low back pain (LBP) is a common health problem and a substantial part of LBP is presumed to be attributable to degeneration of the intervertebral disc. For patients suffering from intractable discogenic LBP, there are few evidence-based effective interventional treatment options available. In 2010, the results of a randomized controlled trial (RCT) were published concerning "intradis...

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