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Assessment
In obese adults, what is the prediction accuracy and maximum overestimation and understimation errors compared to measured resting metabolic rate when using the Harris-Benedict formula (actual body weight)?
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Conclusion
In a study of high-quality research methods, the Harris-Benedict equation predicted RMR within 10% of measured RMR in 64% of obese individuals, and, of the 36% remaining, 30% were overestimations and 6% were underestimations. A concurring, high quality research methods study reported that the Harris-Benedict equation predicted within +/-10% of measured RMR in 64% of obese males; the remaining 36% were overestimation errors. In a moderate quality research design, the Harris-Benedict equation predicted RMR within 10% of measured RMR in obese individuals by 39%; in the remaining 61%, 52% were overestimations and 9% were underestimations. In another moderate quality research design study with only females, 59% were within +/-10% of predicted values using Harris-Benedict; of the remaining 41%, 21% were overestimations and 20% were underestimations. A small study reported individual RMR estimation errors in overweight and obese women of approximately 396 kcals/day using actual weight. Overestimations by 43% to underestimations by 35% occurred in obese individuals using all studies that reported individual errors ranges.
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Grade: I
- Grade I means there is Good/Strong evidence supporting the statement;
- Grade II is Fair;
- Grade III is Limited/Weak;
- Grade IV is Expert Opinion Only;
- Grade V is Not Assignable.
- High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
- Moderate (B) means we are moderately confident in the effect estimate;
- Low (C) means our confidence in the effect estimate is limited;
- Very Low (D) means we have very little confidence in the effect estimate.
- Ungraded means a grade is not assignable.
In obese adults, what is the prediction accuracy and maximum overestimation and understimation errors compared to measured resting metabolic rate when using the Harris-Benedict formula (adjusted body weight)?-
Conclusion
A high quality study reports Harris-Benedict estimated within +/-10% of measured RMR in 26% of individuals with the remaining 74% including 2% overestimations and 72% underestimations. In the same study, when extremely obese individuals were evaluated separately using adjusted body weight, the Harris-Benedict equation did not predict RMR within +/-10% of measured with underestimations occurring in all individuals. A small study reported individual RMR error in females of approximately 272 kcals/day using adjusted body weight. The individual error range was a maximal overestimation by 25% to an underestimation by 42%.
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Grade: I
- Grade I means there is Good/Strong evidence supporting the statement;
- Grade II is Fair;
- Grade III is Limited/Weak;
- Grade IV is Expert Opinion Only;
- Grade V is Not Assignable.
- High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
- Moderate (B) means we are moderately confident in the effect estimate;
- Low (C) means our confidence in the effect estimate is limited;
- Very Low (D) means we have very little confidence in the effect estimate.
- Ungraded means a grade is not assignable.
In obese adults, what is the prediction accuracy and maximum overestimation and understimation errors compared to measured resting metabolic rate when using the Harris-Benedict formula (ideal body weight)?-
Conclusion
In a high quality research methods study, the Harris-Benedict equation predicted RMR within +/- 10% in only 26% of obese males; and of the remaining 74%, 4% were overestimations and 70% were underestimations. A neutral research method design reports Harris-Benedict estimated within +/- 10% of measured RMR in 13% of obese individuals with the remaining 87% as underestimations. The individual error range was a maximal overestimation by 5% to an underestimation by 94%.
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Grade: II
- Grade I means there is Good/Strong evidence supporting the statement;
- Grade II is Fair;
- Grade III is Limited/Weak;
- Grade IV is Expert Opinion Only;
- Grade V is Not Assignable.
- High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
- Moderate (B) means we are moderately confident in the effect estimate;
- Low (C) means our confidence in the effect estimate is limited;
- Very Low (D) means we have very little confidence in the effect estimate.
- Ungraded means a grade is not assignable.
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Conclusion
FNCE 2023
Session 357. Providing MNT for the Pediatric Type 1 Diabetes Population: What Does the Evidence Show?
Monday, October 9, 8:30 AM - 9:30 AM
See session information ♦ See EAL review results