Evidence map›Paper›PMID 24725979›Full record

ArticleBMC women's health2014

Plasma 25-hydroxyvitamin D and risk of premenstrual syndrome in a prospective cohort study.

Elizabeth R Bertone-Johnson, Susan E Hankinson, Nancy G Forger, Sally I Powers, Walter C Willett, Susan R Johnson, JoAnn E Manson

Open access · goldAbstract read
In one paragraph

Article in BMC women's health, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.5field-weighted citation impact, top 11% of its field
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

7 citing papers in PubMed, 28 citations in OpenAlex.

  1. Trial
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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

7 authors at 4 institutions in 1 country.

Elizabeth R Bertone-JohnsonDivision of Biostatistics and Epidemiology, Department of Public Health, School of Public Health and Health Sciences, University of Massachusetts, 409 Arnold House, 715 North Pleasant Street, Amherst, MA 01003, USA. ebertone@schoolph.umass.edu.
Susan E Hankinson
Nancy G Forger
Sally I Powers
Walter C Willett
Susan R Johnson
JoAnn E Manson
University of Massachusetts Amherst · USBrigham and Women's Hospital · USGeorgia State University · USUniversity of Iowa · US

Funding

Risk Factors for Breast Cancer in Younger NursesR01CA050385 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI ELIASSEN, A. HEATHER, WILLETT, WALTER C. · 1989 to 2019
$32.3M
Life Course Cancer Epidemiology Cohort in WomenUM1CA176726 · NCI · HARVARD SCHOOL OF PUBLIC HEALTH · PI WILLETT, WALTER C. · 2013 to 2017
$15.7M
Epidemiology of premenstrual syndrome and premenstrual dysphoric disorderK01MH076274 · NIMH · UNIVERSITY OF MASSACHUSETTS AMHERST · PI BERTONE-JOHNSON, ELIZABETH R · 2007 to 2011
$848k
NCI NIH HHS CA176726NCI NIH HHS CA50385NIMH NIH HHS MH076274
6 · The paper itself

Abstract

backgroundModerate to severe premenstrual syndrome (PMS) affects 8-20 percent of premenopausal women. Previous studies suggest that high dietary vitamin D intake may reduce risk. However, vitamin D status is influenced by both dietary vitamin D intake and sunlight exposure and the association of vitamin D status with PMS remains unclear.

methodsWe assessed the relation of plasma 25-hydroxyvitamin D (25OHD), total calcium and parathyroid hormone levels with risk of PMS and specific menstrual symptoms in a case-control study nested within the prospective Nurses' Health Study II. Cases were 401 women free from PMS at baseline who developed PMS during follow-up (1991-2005). Controls were women not experiencing PMS (1991-2005), matched 1:1 with cases on age and other factors. Timed luteal phase blood samples were collected between 1996 and 1999 from cases and controls. We used conditional logistic regression to model the relation of 25OHD levels with risk of PMS and individual menstrual symptoms.

resultsIn analyses of all cases and controls, 25OHD levels were not associated with risk of PMS. However, results differed when the timing of blood collection vs. PMS diagnosis was considered. Among cases who had already been diagnosed with PMS at the time of blood collection (n = 279), 25OHD levels were positively associated with PMS, with each 10 nmol/L change in 25OHD associated with a 13% higher risk. Among cases who developed PMS after blood collection (n = 123), 25OHD levels were unrelated to risk of PMS overall, but inversely related to risk of specific menstrual symptoms. For example, each 10 nmol/L increase was associated with a significant 21% lower risk of breast tenderness (P = 0.02). Total calcium or parathyroid hormone levels were unrelated to PMS.

conclusions25OHD levels were not associated with overall risk of PMS. The positive association observed among women already experiencing PMS at the time of 25OHD measurement is likely due to confounding by indication related to use of dietary supplements to treat menstrual symptoms. Results from prospective analyses, which were less likely influenced by this bias, suggest that higher 25OHD levels may be inversely related to the development of specific menstrual symptoms.

Indexed as

AdultCalciumCase-Control StudiesCohort StudiesFemaleHumansLogistic ModelsMiddle AgedOdds RatioParathyroid HormonePremenstrual SyndromeProspective StudiesRisk FactorsVitamin D25-hydroxyvitamin DCalciumParathyroid HormoneVitamin D

Identifiers

PMID24725979
PMCPMC3997197
OpenAlexW2099244002

What OpenQuestion holds

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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.