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Daily Fecundability
First Results from a New Data Base

 

Bernardo Colombo
Guido Masarotto

 
VOLUME 3 - ARTICLE 5
 
Date Received: 19 Jul 2000
Date Published: 6 Sep 2000

http://www.demographic-research.org/volumes/vol3/5/

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Abstract
This multicentre study has produced a database of 7017 menstrual cycles contributed by 881 women. It provides improved knowledge on length and location of the "fertile window" (identified as of up to 12 days duration) and the pattern and level of daily conception probability. The day of ovulation was identified in each cycle from records of basal body temperature and mucus symptoms. By referencing days of intercourse to the surrogate ovulation markers, estimates of daily fecundability were computed either directly or by the Schwartz model, both for single and multiple acts of intercourse in the fertile window. The relationship between coital pattern and fecundability has been explored. Univariate analysis underlines the significant link with fecundability only of the woman’s reproductive history.

Author's affiliation
Bernardo Colombo
University of Padua, Italy
Guido Masarotto
University of Padua, Italy

Keywords
daily fecundability, fertile period, fertility, fertility awareness, natural family planning, Schwartz model

Word count (Main text)
6889

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