Dietary Intake and Vitamin D Level in Adult Women (VDAW)

Study is to Assess the Effect of Dietary Intake of Nutrients and Level of Vitamin D in Women

Vitamin D deficiency is most diagnosed among women living in the Kingdom of Saudi Arabia. Many factors have been attributed to the incidence of vitamin D deficiency. Saudi women are thought to be at greater risk for vitamin D deficiency because of their darker skin type and the likelihood of reduced ultraviolet exposure . The present study entitled, "Dietary Intake and Vitamin D Level in adult Women," was formulated as there is paucity of data on the etiologic importance of dietary intake in Vitamin D level on blood on women. The major objective of the proposed study is to assess the effect of dietary intake of nutrients and level of vitamin D in women .

Study Overview

• Status: Completed
• Conditions: Deficiency of Vitamin D3
• Intervention / Treatment: Other: Vitamin D status

Detailed Description

For this study, the investigators enrolled 168 women 35-55 years old to evaluate Vitamin D status and to determined whether status was correlated with Vitamin D deficiency.

All women completed a self-administered questionnaire about personal socio-demographic characteristics; They all had anthropometric measurements of body mass index and waist circumference. A 24-hour dietary recall was administered to all women.

The proximate analysis of 25 types of food was conducted according to the American Association of Organic Chemists (AOAC) methods. The following parameters were measured: serum calcium. Vitamin D, levels of parathyroid hormone.

• Study Type: Observational
• Enrollment (Actual): 168

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 35 years to 55 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Female

• Sampling Method: Non-Probability Sample

Study Population

Pre and post-menopausal women 35-55 years of age who were able to provide a 24 hour dietary record.

Description

Inclusion Criteria:

• Women 35- 55 years old,
• Women who spoke Arabic language fluently, and
• Women who were willing to fill a 24-hour questionnaire and provide a serum sample for measurements.

Exclusion Criteria:

• Women < 35 years old or > 55 years old.

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Cross-Sectional

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Vitamin D status; Subjects are recruited to asses Vitamin D status with no interventions	Other: Vitamin D status; There is no intervention in this study

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Vitamin D serum levels	1 year

Secondary Outcome Measures

Outcome Measure	Time Frame
Calcium serum levels	1 year
Vitamin D and Calcium Intake	1 year

Other Outcome Measures

Outcome Measure	Time Frame
Exposure to sun	1 year

Collaborators and Investigators

• Sponsor: Princess Nourah Bint Abdulrahman University
• Collaborators: University of Connecticut
• Investigators: Study Chair: Amani Aljajani, PhD, Princess Nourah bint Abdulrahman University

Study record dates

Study Major Dates

• Study Start: August 1, 2015
• Primary Completion (Actual): August 1, 2016
• Study Completion (Actual): August 1, 2016

Study Registration Dates

• First Submitted: September 29, 2016
• First Submitted That Met QC Criteria: September 30, 2016
• First Posted (Estimate): October 3, 2016

Study Record Updates

• Last Update Posted (Estimate): October 3, 2016
• Last Update Submitted That Met QC Criteria: September 30, 2016
• Last Verified: September 1, 2016

More Information

Terms related to this study

• Keywords: Vitamin D; body weight; Calcium; Phytic Acid
• Additional Relevant MeSH Terms: Physiological Effects of Drugs; Micronutrients; Vitamins; Bone Density Conservation Agents; Vitamin D
• Other Study ID Numbers: non

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided