NCT01692028

Brief Summary

Hypothesis: low vitamin D status is associated with increased insulin resistance and increased blood pressure. Approach: Multiple regression analysis of information extracted from a large database accumulated by a Canadian health foundation, specifically evaluating statistical associations between serum 25(OH)D levels and insulin responsiveness measures as well as blood pressure, after adjusting these variables for BMI, age, sex, and waist circumference.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
4,116

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Feb 2012

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 1, 2012

Completed
Same day until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2012

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2012

Completed
8 months until next milestone

First Submitted

Initial submission to the registry

September 13, 2012

Completed
12 days until next milestone

First Posted

Study publicly available on registry

September 25, 2012

Completed
Last Updated

September 25, 2012

Status Verified

September 1, 2012

Enrollment Period

Same day

First QC Date

September 13, 2012

Last Update Submit

September 21, 2012

Conditions

DiabetesHypertension

Keywords

vitamin DAssociational study

Outcome Measures

Primary Outcomes (1)

  • HOMA-IR

    A composite measure of insulin resistance (HOMA-IR)

    Observational/cross-sectional study

Secondary Outcomes (1)

  • Blood pressure

    cross-sectional study

Eligibility Criteria

Age18 Years - 95 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Healthy adults living in or near Calgary and associated with the oil and gas industries

You may qualify if:

  • Age \> 18

You may not qualify if:

  • Diabetes
  • Elevated HOMA-IR (\>16)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Pure North S'Energy Foundataion

Calgary, Alberta, Canada

Location

MeSH Terms

Conditions

Diabetes MellitusHypertension

Condition Hierarchy (Ancestors)

Glucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System DiseasesVascular DiseasesCardiovascular Diseases

Study Design

Study Type
observational
Observational Model
ECOLOGIC OR COMMUNITY
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 13, 2012

First Posted

September 25, 2012

Study Start

February 1, 2012

Primary Completion

February 1, 2012

Study Completion

February 1, 2012

Last Updated

September 25, 2012

Record last verified: 2012-09

Locations

CA(1)