title: Predictive factors influencing pregnancy rates after intrauterine insemination with frozen donor semen: a prospective cohort study.
abstract: The extent to which certain parameters can influence pregnancy rates after intrauterine insemination with frozen donor semen was examined prospectively. Between July 2011 and September 2015, 402 women received 1264 IUI cycles with frozen donor semen in a tertiary referral infertility centre. A case report form was used to collect data prospectively. The primary outcome measure was clinical pregnancy rate (CPR), confirmed by detection of a gestational sac and fetal heartbeat using ultrasonography at 7-8 weeks of gestation. Statistical analysis was carried out using generalized estimating equations (GEE) to account for the correlation between observations from the same patient. Overall, CPR per cycle was 17.2%. Multivariate GEE analysis revealed the following parameters as predictive for a successful pregnancy outcome: female age (P = 0.0003), non-smoking or smoking fewer than 15 cigarettes a day (P = 0.0470 and P = 0.0235, respectively), secondary infertility (P = 0.0062), low progesterone levels at day zero of the cycle (P = 0.0164) and use of ovarian stimulation with HMG and recombinant FSH compared with clomiphene citrate and natural cycle (P = 0.0006 and P = 0.0004, respectively). These parameters were the most important factors influencing the success rate in a sperm donation programme.
authors.affiliation: Genk Institute for Fertility Technology, Department of Obstetrics and Gynecology, Ziekenhuis Oost-Limburg, Schiepse Bos 6, 3600 Genk, Belgium; Hasselt University, Department of Physiology, Martelarenlaan 42, 3500 Hasselt, Belgium. Electronic address: annelies.thijssen@uhasselt.be.
authors.forename: Annelies
authors.initials: A
authors.lastname: Thijssen
authors.affiliation: Hasselt University, Center for Statistics (CENSTAT), Agoralaan building D, 3590 Diepenbeek, Belgium.
authors.forename: An
authors.initials: A
authors.lastname: Creemers
authors.affiliation: Hasselt University, Center for Statistics (CENSTAT), Agoralaan building D, 3590 Diepenbeek, Belgium.
authors.forename: Wim
authors.initials: W
authors.lastname: Van der Elst
authors.affiliation: Genk Institute for Fertility Technology, Department of Obstetrics and Gynecology, Ziekenhuis Oost-Limburg, Schiepse Bos 6, 3600 Genk, Belgium.
authors.forename: Eva
authors.initials: E
authors.lastname: Creemers
authors.affiliation: Genk Institute for Fertility Technology, Department of Obstetrics and Gynecology, Ziekenhuis Oost-Limburg, Schiepse Bos 6, 3600 Genk, Belgium.
authors.forename: Eva
authors.initials: E
authors.lastname: Vandormael
authors.affiliation: Genk Institute for Fertility Technology, Department of Obstetrics and Gynecology, Ziekenhuis Oost-Limburg, Schiepse Bos 6, 3600 Genk, Belgium.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Dhont
authors.affiliation: Genk Institute for Fertility Technology, Department of Obstetrics and Gynecology, Ziekenhuis Oost-Limburg, Schiepse Bos 6, 3600 Genk, Belgium; Hasselt University, Department of Physiology, Martelarenlaan 42, 3500 Hasselt, Belgium.
authors.forename: Willem
authors.initials: W
authors.lastname: Ombelet
mesh_terms: D000328:Adult; D015925:Cryopreservation; D005260:Female; D006801:Humans; D007316:Insemination, Artificial, Heterologous / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D018873:Pregnancy Rate; D011446:Prospective Studies; D012661:Semen; D055101:Semen Analysis / Q000706:statistics & numerical data; D013094:Spermatozoa; D055815:Young Adult
keywords: Donor sperm; IUI; Prognostic factor; Prospective cohort study; Success rate