Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1988-7-15
pubmed:abstractText
One of the objectives of randomization is to balance the number of patients in each level and combination of levels of prognostic factors. However, as the number of possible prognostic factors increases, some imbalance may occur and make the results of the analysis less interpretable. In order to balance the marginal distribution of each factor and to facilitate more interpretable trial results, the "minimization method" reported by Pocock was applied in our multi-center immunochemotherapy clinical trial. Balancing in every institution was achieved by using Zelen's prespecified value d = 3 for replacing provisional assignment in the individual institution. Nonmetric principal component analysis in S, N factors which were used in minimization process showed good equilibration between groups. Also, in uncontrolled background factors, such as cancer pathology or Borrmann types, acceptable balance was obtained spontaneously at the end of the trial.
pubmed:language
jpn
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0385-0684
pubmed:author
pubmed:issnType
Print
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1935-42
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
[The minimization method in a medium size clinical trial. Study of immunochemotherapy with PSK in gastric cancer].
pubmed:affiliation
Dept. of Gastroenterological Surgery, Aichi Cancer Center.
pubmed:publicationType
Journal Article, Clinical Trial, English Abstract