Clinical trial NCT00512733: Validation of Dietary Calcium Questionnaires Using Diet Records
Official title: Validation of Dietary Calcium Questionnaires Using Diet Records
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Healthy
Keywords: Healthy volunteers
Lead sponsor: University of California, San Francisco
Sponsor class: OTHER
Collaborators: name: Dairy Council of California
First posted: 2007-08-08
Enrollment: 160
Sex: FEMALE
Minimum age (years): 19
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Adults

Brief summary: Dairy products continue to be an important source of calcium, providing over half the calcium intake for most individuals. Educational interventions promoting adequate calcium intake with tools estimating dietary calcium that can be easily utilized by consumers would be a valuable asset to promoting skeletal health. Validation of these tools against standard dietary assessment methods enhances their utility. The Dairy Council of California has developed two dietary calcium questionnaires, one electronic and one in print, using known dietary sources of calcium including frequency of consumption and portion size. For these questionnaires to be effective in clinical and research settings they must be a valid measurement of dietary calcium intake. To measure the validity of the dietary calcium questionnaires one hundred seventy three women will complete the two dietary calcium questionnaires and one 3-day food record. The dietary calcium questionnaires will be validated against this established method of dietary intake measurement. The objective of this study is to validate two dietary calcium questionnaires that can be used in clinical and research settings against an established method of dietary intake measurement. It is hypothesized that both dietary calcium questionnaires will be a valid measurement of dietary calcium intake in women.

Detailed description: The Dairy Council of California has developed two dietary calcium questionnaires, one electronic and one in print, using known dietary sources of calcium including frequency of consumption and portion size. For these questionnaires to be effective in clinical and research settings they must be a valid measurement of dietary calcium intake. To measure the validity of the dietary calcium questionnaires one hundred seventy three women will complete the two dietary calcium questionnaires and one 3-day food record. The dietary calcium questionnaires will be validated against this established method of dietary intake measurement. The objective of this study is to validate two dietary calcium questionnaires that can be used in clinical and research settings against an established method of dietary intake measurement.

Eligibility criteria: Inclusion Criteria:

* Independently living women over the age of 19 in generally good health.

Exclusion Criteria:

* Inability to keep a diet record
* Active gastrointestinal disease that limits or restricts diet
* Inability to understand and provide informed consent.

Primary outcomes:
measure: Mean calcium intake
timeFrame: 3 days
Secondary outcomes:
Other outcomes:
Locations:
city: San Francisco
country: United States
facility: University of California San Francisco
state: California
Study officials:
affiliation: University of California, San Francisco
name: Deborah Sellmeyer, MD
role: PRINCIPAL_INVESTIGATOR
References: