Diet Clinical Trial
Official title:
Recontacting Participants in the Observing Protein and Energy Nutrition Study: ReOPEN
Verified date | June 2019 |
Source | National Institutes of Health Clinical Center (CC) |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
This study will evaluate the structure of error in self-reporting instruments on diet, in
following up the Observing Protein and Energy Nutrition Study (OPEN) conducted in 1999 and
2000. The OPEN study, the largest of its kind, resulted in a wealth of nutritional biomarker
data-measurable indicators of changes in organisms at the level of molecules or cells. A
biomarker could help in understanding how environment and disease are related and about
disease risks. Furthermore, its findings showed that the relative estimates of disease risk
may be weakened by a food frequency questionnaire and a 24-hour questionnaire. Scientists
have long recognized that self-reported information from questionnaires and interviews
contains errors, but there has been uncertainty about the structure of such errors. For the
proposed study, a food record and a food checklist-adjusted food frequency questionnaire will
be compared with the previously used questionnaires, to determine whether the newer study
instruments present less chance of measurement error. The results may provide better tools
for a study on nutritional epidemiology, that is, the incidence and other aspects of disease
and nutrition. OPEN study participants will be invited for follow-up.
Patients who completed the 1999-2000 study who are not currently pregnant or a liquid weight
loss diet may be eligible for this study. The original study recruited men and women 40 to 69
years of age. A letter with summary results from the original OPEN study will be sent to each
of the 482 participants.
Both the Food Record and the food checklist, called the Daily Food List, are instruments to
be given. The Food Record asks the participant to record all foods and beverages consumed.
The Daily Food List asks respondents to write in to the number of times a limited number of
food categories are consumed. In addition, respondents will be asked to complete the National
Cancer Institute Diet History Questionnaire (DHQ), identical to the one that they completed
in the original OPEN study, regarding the previous 12 months. Participants will randomly be
assigned to one of two groups. All will receive four study mailings over a 3-month period:
the DHQ, First 4-Day Food Record (4-day FR), Second 4-day FR, and Booklet of 7-Day Food Lists
(7-day FL), the latter listing selected foods that the participants will mark if consumed on
the reporting day. Study Group A will receive the DHQ, first 4-day FR, second 4-day FR, and
7-day FL. Study Group B will receive the DHQ, 7-day FL, first 4-day FR, and second 4-day FR.
Within 10 days after receiving the DHQ, participants will be called to schedule an
appointment for a 30- to 45-minute visit. Participants will undergo the following procedures:
- Complete the Physical Activity Questionnaire (by telephone for those who have moved out
of the local area or are unable to attend the visit)
- Have weight measured
- Be asked about whether he or she has recently developed certain medical conditions,
experienced dramatic changes in diet, or gained special education in nutrition
The completion time for each instrument in dietary assessment is approximately as follows:
- DHQ-60 minutes.
- Each 4-day FR-80 minutes (20 minutes a day).
- 7-day FL-35 to 49 minutes (5 to 7 minutes a day).
Status | Completed |
Enrollment | 384 |
Est. completion date | February 24, 2020 |
Est. primary completion date | December 22, 2004 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 19 Years to 69 Years |
Eligibility |
- INCLUSION CRITERIA: As this is a follow-up to a previous study with NCI SSIRB approval, there will be no recruitment of new participants. In the original OPEN study, we recruited a sample of men and women between 40-69 years of age. This age group represents those most likely to be recruited for large-scale epidemiological studies of diet and cancer. It is in this same group that we seek to assess measurement error problems for other dietary assessment instruments. |
Country | Name | City | State |
---|---|---|---|
United States | National Cancer Institute (NCI), 9000 Rockville Pike | Bethesda | Maryland |
Lead Sponsor | Collaborator |
---|---|
National Cancer Institute (NCI) |
United States,
Freedman LS, Midthune D, Carroll RJ, Krebs-Smith S, Subar AF, Troiano RP, Dodd K, Schatzkin A, Bingham SA, Ferrari P, Kipnis V. Adjustments to improve the estimation of usual dietary intake distributions in the population. J Nutr. 2004 Jul;134(7):1836-43. Erratum in: J Nutr. 2005 Jun;135(6):1524. Bingham, Sheila A [added]. — View Citation
Kipnis V, Subar AF, Midthune D, Freedman LS, Ballard-Barbash R, Troiano RP, Bingham S, Schoeller DA, Schatzkin A, Carroll RJ. Structure of dietary measurement error: results of the OPEN biomarker study. Am J Epidemiol. 2003 Jul 1;158(1):14-21; discussion 22-6. — View Citation
Subar AF, Kipnis V, Troiano RP, Midthune D, Schoeller DA, Bingham S, Sharbaugh CO, Trabulsi J, Runswick S, Ballard-Barbash R, Sunshine J, Schatzkin A. Using intake biomarkers to evaluate the extent of dietary misreporting in a large sample of adults: the OPEN study. Am J Epidemiol. 2003 Jul 1;158(1):1-13. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Not an intervention but we will assess biomarker data with self-reportdietary data to assess measurement error. | Measurement error in the reporting of dietary intakes | 9 months |
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