Vitamin D Deficiency Epidemiological Research in Sichuan, China

Vitamin D Status and Its Correlation to Bone Density, Bone Turnover Markers and Muscle Function in Community-dwelling People in Sichuan Province , P.R. China

Vitamin D insufficiency and deficiency is pandemic in the world.Sichuan Basin has a subtropical monsoon climate with China's lowest sunshine totals. Inferably, the prevalence of vitamin D insufficiency/deficiency in Sichuan basin is high, and possibly the highest in China. This study will research the serum 25OHD level to get the prevalence of vitamin D deficiency and insufficiency of urban and rural residents in Sichuan Province, China.

Study Overview

• Status: Unknown
• Conditions: Healthy

• Study Type: Observational
• Enrollment (Anticipated): 1500

Contacts and Locations

Study Locations

• China
  • Sichuan
    • Chengdu, Sichuan, China, 610041
      • West China hospital, Sicuhuan University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 30 years to 90 years (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: Female

• Sampling Method: Probability Sample

Study Population

In total, 1500 female subjects aged more than 30 years old (750 urban and 750 rural females) will be included

Description

Inclusion Criteria:

• Females aged 30 years old living in Sichuan province.

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort
subjects; it is a cross-sectional research and there is only one group.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Serum 25OHD	It is a cross-sectional study. All measurements will be performed once after subjects are enrolled.	0 day.
serum calcium and phosphate, creatinine, PTH, BALP and CTX	It is a cross-sectional study. All measurements will be performed once after subjects are enrolled.	0 day
Bone mineral density of lumbar spine and hip	It is a cross-sectional study. All measurements will be performed once after subjects are enrolled.	0 day.
Short physical performance battery	It is a cross-sectional study. All measurements will be performed once after subjects are enrolled.	0 day.

Collaborators and Investigators

• Sponsor: West China Hospital

Study record dates

Study Major Dates

• Study Start: December 1, 2011
• Primary Completion (Anticipated): February 1, 2012
• Study Completion (Anticipated): December 1, 2012

Study Registration Dates

• First Submitted: October 17, 2011
• First Submitted That Met QC Criteria: October 20, 2011
• First Posted (Estimate): October 21, 2011

Study Record Updates

• Last Update Posted (Estimate): October 21, 2011
• Last Update Submitted That Met QC Criteria: October 20, 2011
• Last Verified: October 1, 2011

More Information

Terms related to this study

• Other Study ID Numbers: IISP-VDCHINA