Locomotor, Depression/bad mood, general practice Musculoskeletal Diseases Vitamin D deficiency, unspecified
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Non-Western immigrants 2. Aged 18-60 years 3. 25-hydroxyvitamin D (25-OH-D) level less than 50 nmol/L 4. Non-specific musculoskeletal complaints 4.1. lasting for more than12 weeks 4.2. 3 periods in the last two years, each more than 1 month Note: depression is NOT an exclusion criterion
Exclusion criteria
Exclusion criteria: 1. Vitamin D supplementation in the last 4 months 2. Rachitis 3. Low kidney function (creatinine > 150 nmol/L), Sarcoidosis, hypercalcaemia 4. ESR > 35, use of corticosteroids, cyclosporin, statins
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Current primary outcome measures as of 21/03/2014: Our primary goal is to assess the difference in self-reported improvement of pain (5-point Likert scale) 12 weeks after administration of placebo or 2 x 200.000 IU cholecalciferol. Measured on day 42, and day 84. Previous primary outcome measures: Our primary goal is to assess the difference in self-reported improvement of pain (5-point Likert scale) 12 weeks after administration of placebo or 2 x 150.000 IU cholecalciferol. Measured on day 42, day 84 and day 96. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary outcome measures will be: 1. Self-reported improvement of pain in 6 weeks 2. Improvement of mood at week six and week 12 and correlation of these improvements with level of 25-OH-D at start 3. Correlation of improvement of mood with self-reported improvement of pain 4. Improvement in ability to walk up the stairs at week six and week 12 5. Correlation of VAS-scores for pain with self-reported pain (all 5 point Likert scales) Added 21/03/2014: 6. Correlation of self-reported improvement of pain in 12 weeks and 'bioavailable vitamin D' at baseline All outcomes are measured on day 0, 42, 84 and 96. | — |
Countries
Netherlands