{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:54:40Z","timestamp":1760144080229,"version":"build-2065373602"},"reference-count":23,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,3,15]],"date-time":"2024-03-15T00:00:00Z","timestamp":1710460800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>The vitamin D status diagnosticator (VDSD), a 16-item tool, effectively identifies hypovitaminosis D in healthy older adults and can assist in determining the need for blood tests in this population. Assessing vitamin D levels is particularly crucial in the context of COVID-19. This study aimed to evaluate the VDSD\u2019s effectiveness in pinpointing hypovitaminosis D in older adults affected by COVID-19. The research involved 102 unsupplemented geriatric inpatients consecutively admitted to the acute geriatric division of Angers University Hospital, France, with an average age of 85.0 \u00b1 5.9 years (47.1% women). The physician-administered VDSD was conducted simultaneously with the measurement of serum 25-hydroxyvitamin D (25(OH)D). Hypovitaminosis D was defined as a serum 25(OH)D concentration of \u226475 nmol\/L for vitamin D insufficiency and \u226450 nmol\/L for vitamin D deficiency. Results revealed that 87 participants (85.3%) had vitamin D insufficiency and 63 (61.8%) had vitamin D deficiency. The VDSD accurately identified vitamin D deficiency with an area under the curve (AUC) of 0.81 and an odds ratio (OR) of 40. However, its accuracy in identifying vitamin D insufficiency was lower (AUC = 0.57). In conclusion, the 16-item VDSD, a concise questionnaire, effectively identifies vitamin D deficiency in geriatric patients with COVID-19. This tool can be valuable in guiding the decision to administer vitamin D supplementation during the early stages of COVID-19.<\/jats:p>","DOI":"10.3390\/nu16060856","type":"journal-article","created":{"date-parts":[[2024,3,15]],"date-time":"2024-03-15T14:05:25Z","timestamp":1710511525000},"page":"856","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Efficiency of the Vitamin D Status Diagnosticator amongst Geriatric Patients with COVID-19"],"prefix":"10.3390","volume":"16","author":[{"given":"Caroline","family":"Charonnat","sequence":"first","affiliation":[{"name":"Department of Geriatric Medicine and Memory Clinic, Research Center on Autonomy and Longevity CeRAL, University Hospital, 49000 Angers, France"},{"name":"UNIV ANGERS, School of Medicine, Health Faculty, 49100 Angers, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8662-5172","authenticated-orcid":false,"given":"Dolores","family":"Sanchez-Rodriguez","sequence":"additional","affiliation":[{"name":"Rehabilitation Research Group, Institut Hospital del Mar d\u2019Investigacions M\u00e8diques (IMIM), 08003 Barcelona, Spain"},{"name":"Geriatrics Department, Brugmann University Hospital, Universit\u00e9 Libre de Bruxelles, 1020 Brussels, Belgium"},{"name":"Geriatrics Department, Hospital Del Mar\u2014Hospital de L\u2019Esperan\u00e7a\u2014Centre F\u00f2rum, Parc de Salut Mar, 08029 Barcelona, Spain"},{"name":"WHO Collaborating Centre for Public Health Aspects of Musculo-Skeletal Health and Ageing, Division of Public Health, Epidemiology and Health Economics, University of Li\u00e8ge, 4000 Li\u00e8ge, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4225-2746","authenticated-orcid":false,"given":"Spyridon N.","family":"Karras","sequence":"additional","affiliation":[{"name":"Laboratory of Biological Chemistry, Medical School, Aristotle University, 55535 Thessaloniki, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Duygu","family":"Gezen-Ak","sequence":"additional","affiliation":[{"name":"Brain and Neurodegenerative Disorders Research Laboratories, Department of Neuroscience, Institute of Neurological Sciences, Istanbul University-Cerrahpasa, 34098 Istanbul, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3701-6674","authenticated-orcid":false,"given":"Erdin\u00e7","family":"Dursun","sequence":"additional","affiliation":[{"name":"Brain and Neurodegenerative Disorders Research Laboratories, Department of Neuroscience, Institute of Neurological Sciences, Istanbul University-Cerrahpasa, 34098 Istanbul, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7199-8109","authenticated-orcid":false,"given":"C\u00e9dric","family":"Annweiler","sequence":"additional","affiliation":[{"name":"Department of Geriatric Medicine and Memory Clinic, Research Center on Autonomy and Longevity CeRAL, University Hospital, 49000 Angers, France"},{"name":"UNIV ANGERS, School of Medicine, Health Faculty, 49100 Angers, France"},{"name":"UNIV ANGERS, UPRES EA 4638, 49045 Angers, France"},{"name":"G\u00e9rontop\u00f4le Long\u00e9vit\u00e9 Autonomie des Pays de la Loire, 44200 Nantes, France"},{"name":"Department of Medical Biophysics, Robarts Research Institute, Schulich School of Medicine and Dentistry, the University of Western Ontario, London, ON N6A 5K8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"266","DOI":"10.1056\/NEJMra070553","article-title":"Vitamin D deficiency","volume":"357","author":"Holick","year":"2007","journal-title":"N. 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