'vitamin D deficiency' and 'hypovitaminosis D'
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - aged between 6 months and 4 years - visiting the 'consultatiebureau' in the measurement period
Exclusion criteria
Exclusion criteria: • Malabsorption by coeliakie, cystic fibrosis and inflamatory bowel disease • Chronic liver or kidney disease • Medication influencing vitamin D metabolism like oral glucocorticosteroïds and anticonvulsivants • Contra-indication for drawing blood • Impaired immunostatus, HIV/AIDS/TBC • Osteogenesis imperfecta
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| By capillary blood drawing followed by analysis with the Dried Blood Spot methode the 25(OH)D status will be determined. Rachitic symptoms, infectious airway diseases, growth, weight status, and motoric development will be determined by physical examination. | — |
Secondary
| Measure | Time frame |
|---|---|
| Recent history of infectious diseases, oral hygiene, exposure to sunlight, skin color, dietary and supplementary vitamin D will be assessed by questionnaire. | — |
Countries
Netherlands