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Titolo:
Lifestyle interventions influence relative errors in self-reported diet intake of sodium and potassium
Autore:
Espeland, MA; Kumanyika, S; Wilson, AC; Wilcox, S; Chao, D; Bahnson, J; Reboussin, DM; Easter, L; Zheng, BY;
Indirizzi:
Wake Forest Univ, Bowman Gray Sch Med, Dept Publ Hlth Sci, Biostat Sect, Winston Salem, NC 27157 USA Wake Forest Univ Winston Salem NC USA 27157 , Winston Salem, NC 27157 USA London Sch Hyg & Trop Med, Med Stat Unit, London WC1, England London Sch Hyg & Trop Med London England WC1 t Unit, London WC1, England Univ Illinois, Dept Human Nutr & Dietet, Chicago, IL USA Univ Illinois Chicago IL USA , Dept Human Nutr & Dietet, Chicago, IL USA Univ Penn, Sch Med, Philadelphia, PA 19104 USA Univ Penn Philadelphia PA USA 19104 , Sch Med, Philadelphia, PA 19104 USA UMDNJ, Robert Wood Johnson Med Sch, Dept Med, New Brunswick, NJ USA UMDNJNew Brunswick NJ USA nson Med Sch, Dept Med, New Brunswick, NJ USA Univ S Carolina, Sch Publ Hlth, Dept Exercise Sci, Columbia, SC 29208 USA Univ S Carolina Columbia SC USA 29208 xercise Sci, Columbia, SC 29208 USA
Titolo Testata:
ANNALS OF EPIDEMIOLOGY
fascicolo: 2, volume: 11, anno: 2001,
pagine: 85 - 93
SICI:
1047-2797(200102)11:2<85:LIIREI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLOOD-PRESSURE; ELDERLY TONE; EXCRETION; TRIAL; HYPERTENSION; WITHDRAWAL; BIAS;
Keywords:
measurement error; electrolytes; blood pressure; nutrition; Gibbs sampling;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Espeland, MA Wake Forest Univ, Bowman Gray Sch Med, Dept Publ Hlth Sci, Biostat Sect, Med Ctr Blvd, Winston Salem, NC 27157 USA Wake Forest Univ Med Ctr Blvd Winston Salem NC USA 27157 USA
Citazione:
M.A. Espeland et al., "Lifestyle interventions influence relative errors in self-reported diet intake of sodium and potassium", ANN EPIDEMI, 11(2), 2001, pp. 85-93

Abstract

PURPOSE: To characterize the distribution of errors in self-reported sodium and potassium dietary intakes relative to mure objective urine measures among participants receiving lifestyle interventions. METHODS: We analyzed longitudinal data from 900 individuals with hypertension who had been enrolled in a randomized controlled clinical trial to establish with ther usual care or three lifestyle interventions (weight loss, sodium reduction, and combined weight loss and sodium reduction) could effectively substitute for phamacotherapy. Repeated standardized 24-hour diet recalls and 24-hour urine collections were collected over up to three years of follow-up to estimate sodium and potassium intakes. By contrasting self-reported and urine-based sodium and potassium data collected before and during interventions, we examined the relative impact of intervention assignment on estimated intakes, repeatability, and multivariate measurement error. RESULTS: Relative to urine based measures, mean self-reported sodium intakes were biased about 10% lower among participants assigned to combined weight loss and sodium reduction, hut were unaffected by the other interventions. The repeatability of self-report measures increased slightly with time, particularly among participants assigned to sodium interventions. Errors inself-reported sodium and potassium intakes were correlated before the start of the intervention, but became uncorrelated among individuals assigned to sodium restriction interventions. CONCLUSIONS: Lifestyle interventions may influence not only diet intake, hut also the measurement of diet intake. Ann Epidemiol 2001;11:85-93. (C) 2001 Elsevier Science Inc. All rights reserved.

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Documento generato il 29/03/20 alle ore 01:18:35