ArticleReproductive medicine and biology
Prevalence and Determinants of Low Serum Vitamin D Among Women Attending Infertility Clinics in Japan: A Real-World Multicenter Cross-Sectional Study.
Article in Reproductive medicine and biology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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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.
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Who cites it
1 citing paper in PubMed.
- The Role of Vitamins in Preconception Care and Infertility Treatment: A Narrative Review.Reproductive medicine and biologyReview
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Authors and funding
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: To estimate the prevalence and correlates of low serum 25-hydroxyvitamin D [25(OH)D] among women attending infertility clinics in Japan. Methods: We conducted a multicenter cross-sectional study of 17 261 women with measured 25(OH)D. Deficiency and insufficiency were defined as < 20 and < 30 ng/mL. Monthly/seasonal variation was assessed, and multivariable logistic regression evaluated correlates of deficiency. In a complete-case subset with vitamin D supplement and multivitamin information, 25(OH)D levels and 3-category status (deficient/insufficient/sufficient) were compared between users and non-users. The association between diminished ovarian reserve (DOR) and vitamin D status categories was assessed using the chi-square test. Results: Median 25(OH)D was 16.4 ng/mL; 66.8% were deficient and 89.0% insufficient. Levels varied by month and season ( Conclusions: Low 25(OH)D is highly prevalent in infertility care in Japan with marked seasonal variation and adiposity-related vulnerability. Supplement use was associated with higher 25(OH)D but did not explain the overall high burden.
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