Linked Life Data

10674880

Source:http://linkedlifedata.com/resource/pubmed/id/10674880

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2000-4-7
pubmed:abstractText
A potential advantage of primary over adjuvant chemotherapy in breast cancer survival had been proposed on theoretical grounds. In 1994, early results of the S6-trial comparing primary chemotherapy vs. adjuvant chemotherapy for operable breast cancer in 390 premenopausal patients had shown significant improvement in survival of the primary chemotherapy arm (p = 0.04). An updated analysis conducted in 1995 showed the disappearance of this difference between the two arms (p = 0.18). In the present analysis, we investigated the potential short and long-term benefits attributable to primary chemotherapy by applying weighted logrank tests designed to assess specifically these effects. Results were compared to those obtained with the classical logrank test. At a median follow-up of 105 months, a significant short-term survival benefit (p = 0.02) in favor of the primary chemotherapy has been shown. However, no long-term survival benefit (p = 0.36) could be documented. The classical logrank test had revealed no significant difference (p = 0.24) between the two groups but the proportional hazard assumption being rejected (p = 0.04), the efficiency of this test can be questioned. Results using the present analysis suggested that primary chemotherapy delayed early death rates, without significantly modifying long-term event rates. It emphasizes that a short-term effect which is not necessarily associated with a long-term benefit may be seen at an early evaluation and disappear later on.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0167-6806
pubmed:author
pubmed:issnType
Print
pubmed:volume
58
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
151-6
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Short and long-term effects on survival in breast cancer patients treated by primary chemotherapy: an updated analysis of a randomized trial.
pubmed:affiliation
Department of Biostatistics, Curie Institute, Paris, France.
pubmed:publicationType
Journal Article, Clinical Trial, Randomized Controlled Trial, Controlled Clinical Trial, Research Support, Non-U.S. Gov't