Nonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study

David E McCarty,1 Aronkumar Reddy,1 Quinton Keigley,2 Paul Y Kim,1 Stephen Cohen,2 Andrew A Marino1 1Division of Sleep Medicine, Department of Neurology, Louisiana State University Health Sciences Center, 2School of Medicine, Louisiana State University, Shreveport, LA, USA Background: The purpose of...

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Autores principales:	McCarty DE, Reddy A, Keigley Q, Kim PY, Cohen S, Marino AA
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495
Acceso en línea:	https://doaj.org/article/45b2c637a5dd447d84571cb63583cb25
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spelling	oai:doaj.org-article:45b2c637a5dd447d84571cb63583cb252021-12-02T06:53:02ZNonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study1179-1608https://doaj.org/article/45b2c637a5dd447d84571cb63583cb252013-03-01T00:00:00Zhttp://www.dovepress.com/nonspecific-pain-is-a-marker-for-hypovitaminosis-d-in-patients-undergo-a12425https://doaj.org/toc/1179-1608David E McCarty,1 Aronkumar Reddy,1 Quinton Keigley,2 Paul Y Kim,1 Stephen Cohen,2 Andrew A Marino1 1Division of Sleep Medicine, Department of Neurology, Louisiana State University Health Sciences Center, 2School of Medicine, Louisiana State University, Shreveport, LA, USA Background: The purpose of this cross-sectional study was to test the hypothesis that serum vitamin D levels are abnormally low in sleep clinic patients admitting to chronic nonspecific musculoskeletal pain and to assess the associated risk factors. A secondary purpose was to identify a clinical biomarker for vitamin D deficiency. Methods: We enrolled 153 consecutive patients who admitted to the presence of chronic nonspecific musculoskeletal pain during a comprehensive sleep evaluation at a specialist sleep medicine clinic within an academic center. Venous blood sampling was performed for determination of serum 25-hydroxyvitamin D. Risk factors for vitamin D deficiency (25-hydroxyvitamin D &lt; 20 ng/mL) were identified by odds ratios. Receiver-operating characteristic curve analysis was performed with 10-fold cross-validation to identify a biomarker for vitamin D deficiency calculated by linear discriminant analysis. Results: The mean serum 25-hydroxyvitamin D level was 19.8 &plusmn; 11.1, with 54% of the study population having vitamin D deficiency. This mean 25-hydroxyvitamin D level was lower than that observed historically in healthy controls, and was either similar or lower than in all but one representative historical cohort formed on the basis of chronic nonspecific musculoskeletal pain. Risk factors for vitamin D deficiency were black ethnicity, age &lt; 60 years, and obesity. These risk factors were identified both in the entire cohort and separately in subgroups with and without obstructive sleep apnea. The biomarker (based on race, age, and body mass index) had a sensitivity and specificity for predicting vitamin D deficiency of 0.73 and 0.74, respectively. Conclusion: Vitamin D deficiency was prevalent in patients with sleep disorders and chronic nonspecific musculoskeletal pain on evaluation in a sleep medicine clinic. Vitamin D deficiency was reliably estimated in the study population using a biomarker derived from common demographic characteristics. Keywords: vitamin D, biomarker, pain, sleep, linear discriminant analysis, receiver-operating analysisMcCarty DEReddy AKeigley QKim PYCohen SMarino AADove Medical PressarticlePsychiatryRC435-571Neurophysiology and neuropsychologyQP351-495ENNature and Science of Sleep, Vol 2013, Iss default, Pp 37-42 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495
spellingShingle	Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495 McCarty DE Reddy A Keigley Q Kim PY Cohen S Marino AA Nonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study
description	David E McCarty,1 Aronkumar Reddy,1 Quinton Keigley,2 Paul Y Kim,1 Stephen Cohen,2 Andrew A Marino1 1Division of Sleep Medicine, Department of Neurology, Louisiana State University Health Sciences Center, 2School of Medicine, Louisiana State University, Shreveport, LA, USA Background: The purpose of this cross-sectional study was to test the hypothesis that serum vitamin D levels are abnormally low in sleep clinic patients admitting to chronic nonspecific musculoskeletal pain and to assess the associated risk factors. A secondary purpose was to identify a clinical biomarker for vitamin D deficiency. Methods: We enrolled 153 consecutive patients who admitted to the presence of chronic nonspecific musculoskeletal pain during a comprehensive sleep evaluation at a specialist sleep medicine clinic within an academic center. Venous blood sampling was performed for determination of serum 25-hydroxyvitamin D. Risk factors for vitamin D deficiency (25-hydroxyvitamin D &lt; 20 ng/mL) were identified by odds ratios. Receiver-operating characteristic curve analysis was performed with 10-fold cross-validation to identify a biomarker for vitamin D deficiency calculated by linear discriminant analysis. Results: The mean serum 25-hydroxyvitamin D level was 19.8 &plusmn; 11.1, with 54% of the study population having vitamin D deficiency. This mean 25-hydroxyvitamin D level was lower than that observed historically in healthy controls, and was either similar or lower than in all but one representative historical cohort formed on the basis of chronic nonspecific musculoskeletal pain. Risk factors for vitamin D deficiency were black ethnicity, age &lt; 60 years, and obesity. These risk factors were identified both in the entire cohort and separately in subgroups with and without obstructive sleep apnea. The biomarker (based on race, age, and body mass index) had a sensitivity and specificity for predicting vitamin D deficiency of 0.73 and 0.74, respectively. Conclusion: Vitamin D deficiency was prevalent in patients with sleep disorders and chronic nonspecific musculoskeletal pain on evaluation in a sleep medicine clinic. Vitamin D deficiency was reliably estimated in the study population using a biomarker derived from common demographic characteristics. Keywords: vitamin D, biomarker, pain, sleep, linear discriminant analysis, receiver-operating analysis
format	article
author	McCarty DE Reddy A Keigley Q Kim PY Cohen S Marino AA
author_facet	McCarty DE Reddy A Keigley Q Kim PY Cohen S Marino AA
author_sort	McCarty DE
title	Nonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study
title_short	Nonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study
title_full	Nonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study
title_fullStr	Nonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study
title_full_unstemmed	Nonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study
title_sort	nonspecific pain is a marker for hypovitaminosis d in patients undergoing evaluation for sleep disorders: a pilot study
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/45b2c637a5dd447d84571cb63583cb25
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Nonspecific pain is a marker for hypovitaminosis D in patients undergoing evaluation for sleep disorders: a pilot study

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