Time to pregnancy and sex of offspring: cohort study

[...]while poor mucus quality may in itself be a cause of decreased fertility, it is often accompanied by hormonal problems and poor follicular development, conditions that may also give rise to lower birth rates by increasing the probability of early spontaneous abortion. 3 Secondly, after multiple...

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Bibliographic Details
Published in:BMJ 2005-12, Vol.331 (7530), p.1437-1438
Main Authors: Smits, Luc J M, de Bie, Rob A, Essed, Gerard G, van den Brandt, Piet A
Format: Article
Language:English
Subjects:
Adult
Babies
Biological and medical sciences
Boys
Cervical mucus
Cohort Studies
Coitus
Conception
Female
Fetuses
General aspects
Humans
Hypotheses
Infertility
Male
Maternal Age
Medical sciences
Miscarriage
Motherhood
Netherlands
Obstetrics
Pregnancy
Pregnancy - statistics & numerical data
Reproductive system
Sex
Sex chromosomes
Sex Ratio
Sperm
Spermatozoa
Time Factors
Timing
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Summary:[...]while poor mucus quality may in itself be a cause of decreased fertility, it is often accompanied by hormonal problems and poor follicular development, conditions that may also give rise to lower birth rates by increasing the probability of early spontaneous abortion. 3 Secondly, after multiple unsuccessful attempts at getting pregnant, couples may increase their coital rate and optimise the timing of their coital acts.
ISSN:0959-8138
0959-8146
0959-535X
1468-5833
1756-1833
DOI:10.1136/bmj.331.7530.1437