Hypothesis: The online 24 hour dietary recall will be comparable to interviewer-administered 24 hour dietary recall considering the limits of agreement in the reporting of energy and macronutrient intake. If the two methods of dietary assessment are comparable (i.e., if greater than 95% of the data plots will lie within the limits of agreement), the online dietary assessment tool could be used in future studies to collect dietary intake data and health data in larger sets of Russian populations, in order to investigate the potential differences in anthropometric risk factors of non-communicable diseases (cancers, diabetes, obesity, hypertension, mortality, etc.) in people with different diet.
Baseline assessments include a demographic questionnaire, including anthropometrics (height, weight), a heath status questionnaire, supplement intake, eating habits, and a food frequency questionnaire, and cardiovascular assessment (blood pressure and heart rate).
Study Type
OBSERVATIONAL
Enrollment
204
24-hr dietary recall
CRO Name: OCT Rus Ltd.
Saint Petersburg, Russia
Eco-Safety LLC
Saint Petersburg, Russia
Astarta, LCC
Saint Petersburg, Russia
Mayly LLC
Saint Petersburg, Russia
Extent of agreement between online self-administered online 24 hour dietary recall and interviewer-administered 24 hour dietary recall in energy and nutrient reporting
Bland Altman analysis of energy and macronutrient (carbohydrates, fat, protein) intake. Data for adults, younger school age children (7-13 years) and older school age children (14-17 years) participants in different age subgroups (7-13 years, 14-17 years, 18 years and older) will be analyzed separately.
Time frame: The average of the two 24 hour periods (recall 1 and recall 2) within each method. Recall 1 and Recall 2 are in-person visits one week apart.
Difference between the self-administered online 24 hour dietary recall and the interviewer-administered 24 hour dietary recall in the reporting of energy and nutrient intake.
Absolute and percent difference. Data for adults, younger school age children (7-13 years) and older school age children (14-17 years) participants in different age subgroups (7-13 years, 14-17 years, 18 years and older) will be analyzed separately.
Time frame: The average of the two 24 hour periods (recall 1 and recall 2) within each method. Recall 1 and Recall 2 are in-person visits one week apart.
Correlation between estimates of energy and nutrient intake reported by self-administered online 24 hour dietary recall and the interviewer-administered 24 hour dietary recall for the same day.
Cross-classification analysis. Data for adults, younger school age children (7-13 years) and older school age children (14-17 years) participants in different age subgroups (7-13 years, 14-17 years, 18 years and older) will be analyzed separately. The relative agreement will be in quartiles: exact agreement, exact plus adjacent quartile, disagreement or extreme disagreement.
Time frame: The average of the two 24 hour periods (recall 1 and recall 2) within each method. Recall 1 and Recall 2 are in-person visits one week apart.
Extent of agreement between measured and self-reported body mass index (BMI)
Bland Altman analysis. Data for adults, younger school age children (7-13 years) and older school age children (14-17 years) participants in different age subgroups (7-13 years, 14-17 years, 18 years and older) will be analyzed separately.
Time frame: The average body mass index (BMI) in kg/m squared of the two 24 hour periods (recall 1 and recall 2) within each method. Recall 1 and Recall 2 are in-person visits one week apart.
Extent of agreement between measured and self-reported weight
Bland Altman analysis. Data for adults, younger school age children (7-13 years) and older school age children (14-17 years) participants in different age subgroups (7-13 years, 14-17 years, 18 years and older) will be analyzed separately.
Time frame: The average weight in kg of the two 24 hour periods (recall 1 and recall 2) within each method. Recall 1 and Recall 2 are in-person visits one week apart.
Extent of agreement between measured and self-reported height
Bland Altman analysis. Data for adults, younger school age children (7-13 years) and older school age children (14-17 years) participants in different age subgroups (7-13 years, 14-17 years, 18 years and older) will be analyzed separately.
Time frame: The average height in cm of the two 24 hour periods (recall 1 and recall 2) within each method. Recall 1 and Recall 2 are in-person visits one week apart.
User acceptability of the online dietary assessment tool based on the evaluation questionnaire data
Evaluation questionnaire. Data for adults, younger school age children (7-13 years) and older school age children (14-17 years) participants in different age subgroups (7-13 years, 14-17 years, 18 years and older) will be analyzed separately.
Time frame: At the conclusion of the second in-person visit, one week after the first in-person visit.
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