Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2004-1-21
pubmed:abstractText
Previous studies have suggested an association between subfertility and testicular cancer by using fecundity and semen characteristics to measure fertility. The occurrence of twinning in offspring may be used to investigate male reproductive health, because dizygotic twinning is reduced by male subfertility. We therefore assessed number of children and offspring twinning rates among 4592 Swedish patients with testicular cancer and 12 254 control subjects. Before diagnosis, case patients had a decreased number of children (for testicular cancer, odds ratio [OR] = 0.71, 95% confidence interval [CI] = 0.62 to 0.81; at least three children compared with no children), with a lower frequency of dizygotic twinning (for unlike-sex twins, OR for the father having testicular cancer = 0.49, 95% CI = 0.22 to 1.08). The ratio of unlike-sex to same-sex twins was 0.22 among children of case patients and 0.66 among children of control subjects (adjusted P =.03, two-sided Wald test). We also found an increased occurrence of twinning after diagnosis, probably attributable to treatment for iatrogenic subfertility. Our study strongly supports evidence of an association between subfertility and the subsequent risk for testicular cancer.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1460-2105
pubmed:author
pubmed:issnType
Electronic
pubmed:day
21
pubmed:volume
96
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
145-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Fecundity and twinning rates as measures of fertility before diagnosis of germ-cell testicular cancer.
pubmed:affiliation
Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. lorenzo.richiardi@ meb.ki.se
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't