title: Prevalence of vitamin D deficiency in apparently healthy children in north India.
abstract: BACKGROUND
  The data on the prevalence of vitamin D deficiency (VDD) in apparently healthy children from India is limited.
  
  
  OBJECTIVE
  To assess the prevalence of VDD in apparently healthy children.
  
  
  METHODS
  Prospective study.
  
  
  METHODS
  Apparently healthy children from the age groups of 3 months-12 years, from the upper socioeconomical status (USES), attending the outpatient department (OPD) of a private pediatric hospital in Chandigarh, India, for minor ailments were enrolled over a period of 6 months (March-August 2013).
  
  
  METHODS
  Plasma levels of 25-hydroxyvitamin D [25(OH)D] were measured by competitive electrochemiluminescence immunoassay.
  
  
  RESULTS
  In total, 338 children (188 boys, 150 girls) with mean age of 3.31 years were enrolled. The percentages of children with deficient, insufficient, and sufficient levels of 25(OH)D were 40.24%, 25.44%, and 34.32%, respectively. Clinical signs of VDD were seen in only 8.53% of the children. The mean (±SD) levels of 25(OH)D were 27.48 (15.99) ng/mL. On univariate analysis, deficient levels of 25(OH)D were associated with relatively younger age group, female sex, failure to thrive, exclusive breastfeeding, inadequate sun exposure, and no vitamin D supplements.
  
  
  CONCLUSIONS
  A high prevalence of clinical and biochemical VDD was noted in apparently healthy children belonging to the USES.
authors.forename: Suresh Kumar
authors.initials: SK
authors.lastname: Angurana
authors.forename: Renu Suthar
authors.initials: RS
authors.lastname: Angurana
authors.forename: Gagan
authors.initials: G
authors.lastname: Mahajan
authors.forename: Neeraj
authors.initials: N
authors.lastname: Kumar
authors.forename: Vikas
authors.initials: V
authors.lastname: Mahajan
mesh_terms: D015415:Biomarkers / Q000097:blood*; D002648:Child; D002675:Child, Preschool; D019587:Dietary Supplements; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007194:India / Q000453:epidemiology; D007223:Infant; D008297:Male; D010281:Parathyroid Hormone / Q000097:blood*; D015995:Prevalence; D011379:Prognosis; D011446:Prospective Studies; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology*
chemical_list: D015415:Biomarkers; D010281:Parathyroid Hormone; D014807:Vitamin D; C104450:25-hydroxyvitamin D