randomization

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Related to randomized: randomised, Randomized controlled trial, Randomized experiment

randomization

 [ran″dom-ĭ-za´shun]
random assignment.
The use of randomization in the design of a clinical trial. From Gordis, 1996.

ran·dom·i·za·tion

(ran'dom-ĭ-zā'shun),
Random allocation, the process of selecting entities, for example, treatment regimens, using a formal system whereby each entity has a known, generally an equal chance of being selected. This may be accomplished by means of a table of random numbers, toss of a coin, or some other system in which selection or nonselection is determined by chance alone.

randomization

Etymology: ME, randoun, run violently
the process of assigning subjects or objects to a control or experimental group on a random basis.

randomization

Random assignment, random allocation, randomized allocation Statistics The selection of subjects or samples for each 'arm' of a study or experiment based on chance alone–ie, a theoretical coin toss, which is intended to minimize the influence of irrelevant details and selection bias, and produce statistically valid data. Cf Convenience sample.

ran·dom·i·za·tion

(ran'dŏm-ī-zā'shŭn)
Assignment of the subjects of experimental research to groups by chance.
Synonym(s): randomisation.

randomization (ranˈ·d·m·zāˑ·shn),

n a method based on chance in which participants of a clinical study are assigned to comparison and/or control and treatment groups. Randomization minimizes the differences among groups by equally distributing people with particular characteristics among all the trial groups. Randomization can also be done in laboratory and observational studies.

randomization

the performance of a function, e.g. selection, in a random manner.
References in periodicals archive ?
However, foundations are still more willing to fund randomized experiments in medicine than in education, The Gates Foundation, for instance, funded by the multibillionaire founder of Microsoft, has admirably committed $50 million for a carefully designed randomized study of an AIDS prevention initiative in Africa.
Investigators conducting a recently completed randomized intergroup trial (R91-11) compared the effectiveness of the neoadjuvant approach (in which chemotherapy is used to select patients for radiation, similar to the VA trial) to the effectiveness of definitive radiation alone and of combined concurrent chemoradiation for patients with T3 and selected T4 laryngeal cancers.
Use of a commercially available chlorhexidine-impregnated sponge dressing at the insertion site of central venous and arterial catheters led to a threefold reduction in catheterrelated bloodstream infections in a recent prospective, randomized study (22).
For example, in the early recruitment period for the clinical trials, it was estimated that less than 1 percent of patients with metastatic breast cancer who received an ABMT did so within the context of a randomized clinical trial.
The respective rates of adverse events were similar among patients initially randomized to both the VIDEX and ddC arms of CPCRA 002.
If this is the way the game will be played, how will we ever be able to use a randomized trial to study diet?
NASDAQ:VITA), a spine and orthopedic biosurgery company, reported that it has completed patient enrollment for its pivotal, prospective, randomized study for CORTOSS([R]) Bone Augmentation Material in development for the treatment of vertebral compression fractures.
For fluconazole, the mycologic cure rate in three randomized trials totalling 131 patients was 48%, versus 79% in three open studies involving 208 patients, according to Dr.
Moreover, this randomized study has again confirmed the safety and tolerability profile of TracleerTM in the scleroderma patient population.
The authors, Paul Peterson [editor-in-chief] of Education Next] and William Howell, mounted a randomized field trial like those used in medicine in order to rest the effects on achievement of being given a voucher to attend private school, Catholic Schools, by contrast, uses a nonexperimental approach in studying the influence of Catholic schools.
This research team, including leading lipodystrophy researchers Carr and Cooper in Sydney, Australia, randomized 111 adult patients.
8-14] For example, the European Organization for Research and Treatment of Cancer conducted a prospective, randomized trial to compare twice-daily radiotherapy with 80.

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