Evidence map›Paper›PMID 32101336›Full record

Trial reportPaediatric and perinatal epidemiology2020

Comparison of woman-picked, expert-picked, and computer-picked Peak Day of cervical mucus with blinded urine luteinising hormone surge for concurrent identification of ovulation.

Joseph B Stanford, Karen C Schliep, Chun-Pin Chang, John-Paul O'Sullivan, Christina A Porucznik

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Paediatric and perinatal epidemiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed.

  1. Article
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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

5 authors.

Joseph B StanfordOffice of Cooperative Reproductive Health, Division of Public Health, Department of Family & Preventive Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA.ORCID 0000-0002-9932-3947
Karen C SchliepOffice of Cooperative Reproductive Health, Division of Public Health, Department of Family & Preventive Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA.
Chun-Pin ChangOffice of Cooperative Reproductive Health, Division of Public Health, Department of Family & Preventive Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA.ORCID 0000-0002-0878-997X
John-Paul O'SullivanGreater Glasgow Health Board, Glasgow, UK.
Christina A PorucznikOffice of Cooperative Reproductive Health, Division of Public Health, Department of Family & Preventive Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA.

Funding

Clinical Research in Human FertilityK23HD001479 · NICHD · UNIVERSITY OF UTAH · PI STANFORD, JOSEPH B · 2001 to 2005
$673k
NICHD NIH HHS 1K23 HD0147901-01A1NICHD NIH HHS K23 HD001479
6 · The paper itself

Abstract

backgroundPrevious research has demonstrated that women instructed in fertility awareness methods can identify the Peak Day of cervical mucus discharge for each menstrual cycle, and the Peak Day has high agreement with other indicators of the day of ovulation. However, previous studies enrolled experienced users of fertility awareness methods or were not fully blinded.

objectiveTo assess the agreement between cervical mucus Peak Day identified by fertile women without prior experience on assessing cervical mucus discharge with the estimated day of ovulation (1 day after urine luteinising hormone surge).

methodsThis study is a secondary analysis of data from a randomised trial of the Creighton Model FertilityCare

resultsFifty-seven women with 187 complete cycles were included. A Peak Day was identified in 117 (63%) cycles by women, 185 (99%) cycles by experts, and 187 (100%) by computer algorithm. The woman-picked Peak Day was the same as the referent day in 25% of 117 cycles, within ±1 day in 58% of cycles, ±2 days in 84%, ±3 days in 87%, and ±4 days in 92%. The ±1 day and ± 4 days' agreement was 50% and 90% for the expert-picked and 47% and 87% for the computer-picked Peak Day, respectively.

conclusionsWomen's daily tracking of cervical mucus is a low-cost alternative for identifying the estimated day of ovulation.

Indexed as

Luteinizing HormoneAdultAlgorithmsBiomarkersCervix MucusCorrelation of DataDiagnosis, Computer-AssistedFemaleFertile PeriodHumansMenstrual CycleOvulationReproducibility of ResultsSelf-ExaminationTime-to-PregnancyBiomarkersLuteinizing Hormonebiomonitoringcervical mucuscreighton model fertilitycare systemfertilityovulation

Identifiers

PMID32101336
PMCPMC8495767

What Socratic holds

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Registered trials

None linked

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 Socratic graph.