Abstract
Citation
Rankin D, Ellis SM, Macintyre UE, Hanekom SM, Wright HH. Dietary intakes assessed by 24-h recalls in peri-urban African adolescents: validity of energy intake compared with estimated energy expenditure. Eur J Clin Nutr 2011 Aug;65(8):910-9. Epub 2011 May 11.
Abstract
BACKGROUND/OBJECTIVE: The objective of this study is to determine the relative validity of reported energy intake (EI) derived from multiple 24-h recalls against estimated energy expenditure (EE(est)). Basal metabolic rate (BMR) equations and physical activity factors were incorporated to calculate EE(est). SUBJECTS/METHODS: This analysis was nested in the multidisciplinary PhysicaL Activity in the Young study with a prospective study design. Peri-urban black South African adolescents were investigated in a subsample of 131 learners (87 girls and 44 boys) from the parent study sample of 369 (211 girls and 158 boys) who had all measurements taken. Pearson correlation coefficients and Bland-Altman plots were calculated to identify the most accurate published equations to estimate BMR (P<0.05 statistically significant). EE(est) was estimated using BMR equations and estimated physical activity factors derived from Previous Day Physical Activity Recall questionnaires. After calculation of EE(est), the relative validity of reported energy intake (EI(rep)) derived from multiple 24-h recalls was tested for three data subsets using Pearson correlation coefficients. Goldberg's formula identified cut points (CPs) for under and over reporting of EI. RESULTS: Pearson correlation coefficients between calculated BMRs ranged from 0.97 to 0.99. Bland-Altman analyses showed acceptable agreement (two equations for each gender). One equation for each gender was used to calculate EE(est). Pearson correlation coefficients between EI(rep) and EE(est) for three data sets were weak, indicating poor agreement. CPs for physical activity groups showed under reporting in 87% boys and 95% girls. CONCLUSION: The 24-h recalls measured at five measurements over 2 years offered poor validity between EI(rep) and EE(est).
Full Text
The full text is available at https://dx.doi.org/10.1038/ejcn.2011.60
At A Glance
Individual Dietary Behavior Variables
| Intake |
|---|
| Total Energy/Energy Density |
Domain(s)
Individual Dietary Behavior
Measure Type
24-hour dietary recall
Measure Availability
Not reported
Number of Items
Not applicable
Study location
Metro/Urban
Ikageng, North West province of South Africa, South Africa
Languages
Not applicable
Information about Development of Measure
Nothing to add
Study Design
Study Participants
Age
12 - 18 Years
Sex
Female
Male
Race/Ethnicity
Black/African American
Predominantly Low-income/Low-SES
Yes
Sample Size
81
Study Design
Design Type
Validation/Reliability
Health Outcomes Assessed
None
Obesity Measures
Not reported
BMI Measured or Self-reported
Measured height
Measured weight
Covariates
Not reported
Data Reported on Race/Ethnicity
Quantitative data on study sample
Data Reported on SES
Not applicable
SES-related Variables
Not applicable
How To Use
Administration
Who Administered
Researcher-administered
How Administered
In-person
Time Required
Not reported
Training Required
Yes, time not reported
Instructions on Use
Instructions on instrument use included in article
Data Analysis
Data Collection/Analysis Costs
Not available
Data Collection/Protocol
Subjects were assessed at seven measurement points: March (baseline), June, August, and September 2004, and March, June, and September 2005. Dietary intakes were assessed by standardized 24-hour recall interviews at each measurement point. Two trained and experienced interviewers, supervised by a registered dietician, conducted the interviews. Estimated energy expenditure was calculated for each subject for each of the seven measurement points using the equation by Black (2000) and a Basal Metabolic Rate (BMR) value that was also estimated.
Instructions on Data Analysis
Instructions on analysis included in article
Validity (2)
| Type of validity | Construct/subscale assessed | Criterion measure used | Test/statistic used | Result |
|---|---|---|---|---|
| Criterion | Energy intake derived from a single 24-hour recall (Boys and girls) | Estimated energy expenditure | Pearson correlation coefficient | r = -0.15 to 0.38 |
| Criterion | Mean energy intake derived from 3 to 4 24-hour recalls (Boys and girls) | Estimated energy expenditure | Pearson correlation coefficient | r = -0.12 to 0.38 |
Reliability (0)
There are no reliability tests reported for this measure.