Validation of Dietary Calcium Questionnaires Using Diet Records
8. august 2014 opdateret af: University of California, San Francisco
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.
Studieoversigt
Status
Afsluttet
Betingelser
Detaljeret beskrivelse
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.
Undersøgelsestype
Observationel
Tilmelding (Faktiske)
160
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
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California
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San Francisco, California, Forenede Stater, 94115
- University of California San Francisco
-
-
Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
19 år og ældre (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ja
Køn, der er berettiget til at studere
Kvinde
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
Adults
Beskrivelse
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.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Mean calcium intake
Tidsramme: 3 days
|
Participants' 3-day food records were mailed to the study and examined for completeness and legibility. Missing or unclear items were corrected by telephoning the participant. Food records were entered into Food Processor Plus software (ESHA Research, Salem, OR) to determine nutrient content. For food items that were not in the software's database, nutrient content was determined by examination of labels, contact with food manufacturers, search of the US Department of Agriculture nutrient database, or estimation from ingredient content by an RD. At the initial study visit, participants completed a written questionnaire and the online questionnaire. Calcium intake was calculated using a built-in calculator in the online questionnaire and by hand using the instructions in the booklet for the written questionnaire. |
3 days
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Deborah Sellmeyer, MD, University of California, San Francisco
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. marts 2006
Primær færdiggørelse (Faktiske)
1. marts 2008
Studieafslutning (Faktiske)
1. marts 2008
Datoer for studieregistrering
Først indsendt
7. august 2007
Først indsendt, der opfyldte QC-kriterier
7. august 2007
Først opslået (Skøn)
8. august 2007
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
11. august 2014
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
8. august 2014
Sidst verificeret
1. august 2014
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
- H9291-26992
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .