Evidence map›Paper›PMID 29652114›Full record

ArticleMinerva endocrinologica2019

Associations between vitamin D levels and polycystic ovary syndrome phenotypes.

Erin M Davis, Jennifer D Peck, Karl R Hansen, Barbara R Neas, LaTasha B Craig

Abstract read
In one paragraph

Article in Minerva endocrinologica, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
–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

18 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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.

Erin M DavisDepartment of Anatomical Sciences and Neurobiology, University of Louisville, Louisville, KY, USA - erin.davis@louisville.edu.
Jennifer D PeckDepartment of Biostatistics and Epidemiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
Karl R Hansen, Section of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
Barbara R NeasDepartment of Biostatistics and Epidemiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
LaTasha B Craig, Section of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.

Funding

Tracking and Evaluation CoreU54GM104938 · NIGMS · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI PAUL G SPICER · 2013 to 2026
$68.2M
NIGMS NIH HHS U54 GM104938
6 · The paper itself

Abstract

backgroundStudies comparing serum 25-hydroxyvitamin D concentrations in women with and without polycystic ovary syndrome (PCOS) have produced inconsistent results. Additionally, no previous studies have evaluated associations between vitamin D and specific PCOS phenotypes.

methodsThis case-control study was conducted among women undergoing intrauterine insemination. Cases (N.=137) were diagnosed with PCOS and then further classified into 3 diagnostic phenotypes based on combinations of the Rotterdam criteria (ovulatory dysfunction+polycystic ovaries [N.=55]; ovulatory dysfunction +androgen excess [N.=15]; and ovulatory dysfunction, +polycystic ovaries, +androgen excess [N.=67]). Controls (N.=103) were ovulatory women without PCOS who were undergoing IUI. Serum total 25-hydroxyvitamin D concentrations were categorized as deficient (≤20 ng/mL), insufficient (21-29 ng/mL), and sufficient (≥30 ng/mL). Prevalence odds ratios (PORs) were calculated using logistic regression.

resultsA higher proportion (59.9%) of PCOS cases lacked sufficient vitamin D levels compared to controls (47.6%; P value=0.06). The odds of vitamin D deficiency in all PCOS cases were twice that of controls (POR=2.03, 95% CI 0.97-4.26); however, the association was attenuated after adjusting for Body Mass Index (BMI) and race/ethnicity (adjPOR=1.43, 95% CI 0.62, 3.26). When examining PCOS phenotypes exhibiting androgen excess, crude associations were observed for deficient vitamin D levels (unadjPOR=2.93, 95% CI: 1.27, 6.77); however, the association decreased after adjustment for BMI and race/ethnicity (adjPOR=2.03, 95% CI: 0.79, 5.19).

conclusionsVitamin D deficiency occurred more frequently in PCOS cases with androgen excess, but associations were attenuated after adjusting for BMI and race/ethnicity. Combining etiologically distinct PCOS subgroups may obscure associations with lower vitamin D levels and other potential risk factors.

Indexed as

AdultCase-Control StudiesFemaleHumansHyperandrogenismInfertilityInsemination, ArtificialPhenotypePolycystic Ovary SyndromePrevalenceRisk FactorsVitamin DVitamin D Deficiency25-hydroxyvitamin DVitamin D

Identifiers

PMID29652114
PMCPMC6467740

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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.