Evidence map›Paper›PMID 28197716›Full record

SynthesisArchives of gynecology and obstetrics2017

The effect of slow release insemination on pregnancy rates: report of two randomized controlled pilot studies and meta-analysis.

Julian Marschalek, Maximilian Franz, Yael Gonen, Jan-Steffen Kruessel, Amnon Weichselbaum, Lorenz Kuessel, Marie-Louise Trofaier, Johannes Ott

Abstract readMeta-Analysis
In one paragraph

Synthesis in Archives of gynecology and obstetrics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
  4. Intrauterine Insemination: Fundamentals Revisited.Journal of obstetrics and gynaecology of India · 2017
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Julian MarschalekDepartment of Obstetrics and Gynecology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
Maximilian FranzDepartment of Obstetrics and Gynecology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
Yael GonenLin Medical Center, Haifa, Israel.
Jan-Steffen KruesselDepartment of Obstetrics and Gynecology, Interdisciplinary Center for Reproductive Medicine (UniKiD), University of Düesseldorf, Düesseldorf, Germany.
Amnon WeichselbaumAqueduct Medical Ltd., Nazareth, Israel.
Lorenz KuesselDepartment of Obstetrics and Gynecology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
Marie-Louise TrofaierDepartment of Obstetrics and Gynecology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
Johannes OttDepartment of Obstetrics and Gynecology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. johannes.ott@meduniwien.ac.at.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeA modified application technique of intrauterine insemination (IUI) is slow release insemination (SRI), first described by Muharib et al. (Hum Reprod 7(2):227-229, 1992), who postulated higher pregnancy rates with a slow release of spermatozoa for 3 h.

methodsTo investigate this approach, two randomized controlled, cross-over pilot studies were performed from 2004 to 2006 in Israel and Germany to compare SRI with the standard bolus IUI. We aimed to present the results and perform a meta-analysis on available data for SRI. Univariate comparisons of pregnancy rates were performed using one-tailed z tests for method superiority. For meta-analysis, a fixed-effect Mantel-Haentzel weighted average of relative risk was performed.

resultsFifty treatment cycles (IUI: n = 25, SRI: n = 25) were performed in Germany, achieving four pregnancies (IUI: 4%, SRI: 12%, p > 0.05). Thirty-nine treatment cycles (IUI: n = 19, SRI: n = 20) were performed in Israel achieving six pregnancies (IUI: 10.5%, SRI: 20%; p > 0.05). Meta-analysis of all eligible studies for SRI (n = 3) revealed a combined relative risk for pregnancy after SRI of 2.64 (95% CI 1.04-6.74), p = 0.02).

conclusionsIn conclusion, these results lend support to the hypothesis that the pregnancy rate might be improved by SRI compared to the standard bolus technique.

Indexed as

Pregnancy RateAdultCross-Over StudiesFemaleFertilization in VitroGermanyHumansInsemination, ArtificialIsraelMalePilot ProjectsPregnancyRandom AllocationSpermatozoaTime FactorsInfertilityIntrauterine inseminationOutcomePregnancy rateSlow release insemination

Identifiers

PMID28197716
PMCPMC5350232

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.