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Relation between age of mothers with breast cancer and sex of their children

Olsson, H. LU and Brandt, L. (1980) In British Medical Journal 281(6247). p.1029-1031
Abstract
In a consecutive series of 150 women with breast cancer 122 had borne one or more children. Sixty-two patients were aged below 55 years at diagnosis (group A) and 60 were 55 years or older (group B). In group A 91 out of 153 children (59%) were boys compared with 48 out of 141 (34%) in group B (p=0 000007). In group A 54 of the 62 patients (87%) had given birth to one or more boys compared with 35 of the 60 (58%) in group B (p=0 0003). The mean age at diagnosis in mothers of two or more boys was 49 0 years, in those of one boy 55-2 years, and in those of only girls 61 0 years. The differences between each of the mean ages was significant. The mean age at diagnosis in 28 nulliparous patients was 57-7 years. There was no significant... (More)
In a consecutive series of 150 women with breast cancer 122 had borne one or more children. Sixty-two patients were aged below 55 years at diagnosis (group A) and 60 were 55 years or older (group B). In group A 91 out of 153 children (59%) were boys compared with 48 out of 141 (34%) in group B (p=0 000007). In group A 54 of the 62 patients (87%) had given birth to one or more boys compared with 35 of the 60 (58%) in group B (p=0 0003). The mean age at diagnosis in mothers of two or more boys was 49 0 years, in those of one boy 55-2 years, and in those of only girls 61 0 years. The differences between each of the mean ages was significant. The mean age at diagnosis in 28 nulliparous patients was 57-7 years. There was no significant correlation between the number of female pregnancies and age at diagnosis. These results suggest that in women liable to develop breast cancer male pregnancies are associated with an early onset of the disease. © 1980, British Medical Journal Publishing Group. All rights reserved. (Less)
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author
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type
Contribution to journal
publication status
published
subject
in
British Medical Journal
volume
281
issue
6247
pages
3 pages
publisher
BMJ Publishing Group
ISSN
0959-8146
DOI
10.1136/bmj.281.6247.1029
language
English
LU publication?
yes
id
da1e4e61-f829-4b31-9947-3109b36ebd95
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-0018942429&doi=10.1136%2fbmj.281.6247.1029&partnerID=40&md5=2434821e5030c1df20a6db1ee721912c
date added to LUP
2018-12-11 16:08:08
date last changed
2019-09-11 04:03:08
@article{da1e4e61-f829-4b31-9947-3109b36ebd95,
  abstract     = {In a consecutive series of 150 women with breast cancer 122 had borne one or more children. Sixty-two patients were aged below 55 years at diagnosis (group A) and 60 were 55 years or older (group B). In group A 91 out of 153 children (59%) were boys compared with 48 out of 141 (34%) in group B (p=0 000007). In group A 54 of the 62 patients (87%) had given birth to one or more boys compared with 35 of the 60 (58%) in group B (p=0 0003). The mean age at diagnosis in mothers of two or more boys was 49 0 years, in those of one boy 55-2 years, and in those of only girls 61 0 years. The differences between each of the mean ages was significant. The mean age at diagnosis in 28 nulliparous patients was 57-7 years. There was no significant correlation between the number of female pregnancies and age at diagnosis. These results suggest that in women liable to develop breast cancer male pregnancies are associated with an early onset of the disease. © 1980, British Medical Journal Publishing Group. All rights reserved.},
  author       = {Olsson, H. and Brandt, L.},
  issn         = {0959-8146},
  language     = {eng},
  number       = {6247},
  pages        = {1029--1031},
  publisher    = {BMJ Publishing Group},
  series       = {British Medical Journal},
  title        = {Relation between age of mothers with breast cancer and sex of their children},
  url          = {http://dx.doi.org/10.1136/bmj.281.6247.1029},
  volume       = {281},
  year         = {1980},
}