Comparison of 25-hydroxy Vitamin D Level in Caucasian Women Receiving Vitamin D Supplementation and Not Receiving Supplementation: a Randomized Controlled Trial.
This study has been completed.
Information provided by (Responsible Party):
Murad Alam, Northwestern University
First received: April 15, 2009
Last updated: September 14, 2012
Last verified: September 2012
The objective of this study is to assess whether vitamin D supplements are sufficient to increase females who are deficient or borderline deficient in vitamin D levels to normal levels.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
|Official Title:||Comparison of 25-hydroxy Vitamin D Level in Caucasian Women Receiving Vitamin D Supplementation and Not Receiving Supplementation: a Randomized Controlled Trial.|
Resource links provided by NLM:
U.S. FDA Resources
Further study details as provided by Northwestern University:
Primary Outcome Measures:
- For the randomized controlled trial, the primary outcome measure is comparison of the change in vitamin D levels in the vitamin D supplementation group and the placebo group. [ Time Frame: 3 months ] [ Designated as safety issue: No ]
- For the comparative study, the primary outcome measure is comparison of the vitamin D level for tanning bed users compared to the level for non-tanning bed users. [ Time Frame: 3 months ] [ Designated as safety issue: No ]
Secondary Outcome Measures:
- The secondary outcome measures include evaluation of changes in other laboratory parameters associated with change in vitamin D level. [ Time Frame: 3 months ] [ Designated as safety issue: No ]
|Study Start Date:||April 2009|
|Study Completion Date:||August 2010|
|Primary Completion Date:||August 2010 (Final data collection date for primary outcome measure)|
Experimental: Vitamin D supplement
Receive vitamin D supplements.
Dietary Supplement: vitamin D
Subject will receive vitamin d supplements
Placebo Comparator: Placebo
Receive placebo pills
Subject will receive a placebo.
No Intervention: Tanning bed user
Regular tanning bed users will be assessed for their vitamin D levels.
Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00882505
|United States, Illinois|
|Northwestern University Feinberg School of Medicine, Department of Dermatology|
|Chicago, Illinois, United States, 60611|
Sponsors and Collaborators
|Principal Investigator:||Murad Alam, MD||Northwestern University|