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Validation of weighed records and other methods of dietary assessment using the 24 h urine nitrogen technique and other biological markers

  • S. A. Bingham (a1), A. Cassidy (a1), T. J. Cole (a2), A. Welch (a1), S. A. Runswick (a1), A. E. Black (a1), D. Thurnham (a3), C. Bates (a2), K. T. Khaw (a4), T. J. A. Key (a5) and N. E. Day (a6)...
Abstract

Results from analysis of 24 h urine collections, verified for completeness with para-amino benzoic acid, and blood samples collected over 1 year were compared with 16 d weighed records of all food consumed collected over the year, and with results from 24 h recalls, food-frequency questionnaires and estimated food records in 160 women. Using the weighed records, individuals were sorted into quintiles of the distribution of the urine N excretion: dietary N intake ratio (UN:DN). UN exceeded DN in the top quintile of this ratio; mean ratio UN:DN = 1·13 Individuals in this top quintile were heavier, had significantly greater body mass indices, were reportedly more restrained eaters, had significantly lower energy intake:basal metabolic rate ratios (EI:BMR), and had correlated ratios of UN:DN and EI:BMR (r - 0·62). Those in the top quintile reported lower intakes of energy and energy-yielding nutrients, Ca, fats, cakes, breakfast cereals, milk and sugars than individuals in the other quintiles but not lower intakes of non-starch polysaccharides, vitamin C, vegetables, potatoes or meat. Correlations between dietary intake from weighed records and 24 h urine K were 0·74 and 0·82, and between dietary vitamin C and β-carotene and plasma vitamin C and β-carotene 0·86 and 0·48. Correlations between dietary N intake from weighed records and 24 h urine excretion were high (0·78–0·87). Those between N from estimated food records and urine N were r 0·60–0·70. Correlations between urine N and 24 h recalls and food-frequency questionnaires were in the order of 0·01 to 0·5. Despite problems of underreporting in overweight individuals in 20% of this sample, weighed records remained the most accurate method of dietary assessment, and only an estimated 7 d diary was able to approach this accuracy.

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C. J. Bates & T. D. Cowen (1988). Effects of age and dietary vitamin C on the contents of ascorbic acid and acid-soluble thiol in lens and aqueous humour of guinea pigs. Experimental Eye Research 46, 937945.

S. Bingham & J. H. Cummings (1983). The use of 4-aminobenzoic acid as a marker to validate the completeness of 24 h urine collections in man. Clinical Science 64, 629635.

S. Bingham , D. R. R. Williams , T. J. Cole , C. P. Price & J. H. Cummings (1988). Reference values for analytes of 24-h urine collections known to be complete. Annals of Clinical Biochemistry 25, 610619.

A. E. Black , S. A. Jebb , S. Bingham , S. Runswick & S. Poppit (1995). The validation of energy and protein intakes by doubly labelled water and 24 h urine N excretion in post obese subjects. Journal of Human Nutrition and Dietetics (In the Press).

N. J. Fuller , C. J. Bates & K. J. Scott (1983). A radioassay for folate in red cells. Clinica Chimica Acta 131, 343348.

G. R. Gibson , J. H. Cummings , G. T. MacFarlane , C. Allison , I. Segal , H. H. Voster & A. R. P. Walker (1990). Alternative pathways for hydrogen disposal during fermentation in the human colon. Gut 31, 679683.

L. Le Marchand , L. R. Wilkens , P. Harwood & R. V. Cooney (1992). Use of breath hydrogen and methane as markers of colonic fermentation in epidemiologic studies: Circadian patterns of excretion. Environmental Health Perspectives 98, 199202.

S. W. Lichtman , K. Pisarska , E. R. Berman , M. Pestone , H. Dowling , E. Offenbacher , H. Weisel , S. Heshka , D. E. Matthews & S. B. Heymsfield (1992). Discrepancy between self-reported and actual caloric intake and exercise in obese subjects. New England Journal of Medicine 327, 18931898.

M. B. E. Livingstone , A. M. Prentice , J. J. Strain , W. A. Coward , A. E. Black , M. E. Barker , P. G. McKenna & R. G. Whitehead (1990). Accuracy of weighed dietary records in studies of diet and health. British Medical Journal 300, 708712.

A. J. Stunkard & S. Messick (1985). The three-factor eating questionnaire to measure dietary restraint, disinhibition and hunger. Journal of Psychosomatic Research 29, 7181.

T. van Strien , J. E. R. Frijters , G. P. A. Bergers & P. B. Defares (1986). The Dutch eating behaviour questionnaire for assessment of restrained, emotional, and external eating behaviour. International Journal of Eating Disorders 5, 295315.

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British Journal of Nutrition
  • ISSN: 0007-1145
  • EISSN: 1475-2662
  • URL: /core/journals/british-journal-of-nutrition
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