Estimating the population distribution of usual 24-hour sodium excretion from timed urine void specimens using a statistical approach accounting for correlated measurement errors.
Background: High US sodium intake and national reduction efforts necessitate developing a feasible and valid monitoring method across the distribution of low-to-high sodium intake.Objective: We examined a statistical approach using timed urine voids to estimate the population distribution of usual 2...
| Publicado en: | Journal of Nutrition Vol. 145; no. 5; pp. 1017 - 1025 |
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| Autores principales: | , , , , , , , , |
| Formato: | research randomized controlled trial Journal Article |
| Publicado: |
Elsevier B.V.
May2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=109784294&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109784294 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00223166 NUI jtl: Journal of Nutrition issn: 00223166 maglogo: N pubinfo: dt: May2015 vid: 145 iid: 5 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 109784294 NLM25833885 2012994408 10.3945/jn.114.206250 NLM25833885 PMC4408737 109784294 ppf: 1017 ppct: 8 formats: tig: atl: Estimating the population distribution of usual 24-hour sodium excretion from timed urine void specimens using a statistical approach accounting for correlated measurement errors. aug: au: Wang, Chia-Yih Carriquiry, Alicia L Chen, Te-Ching Loria, Catherine M Pfeiffer, Christine M Liu, Kiang Sempos, Christopher T Perrine, Cria G Cogswell, Mary E affil: Division of Health and Nutrition Examination Surveys, National Center for Health Statistics, CDC, Hyattsville, MD; cwang@cdc.gov. sug: subj: Models, Biological Sodium Urine Sodium, Dietary Administration and Dosage Urinary Tract Physiology Adolescence Adult Algorithms Calibration Circadian Rhythm District of Columbia Female Human Male Nutritional Assessment Reproducibility of Results Reproduction Sodium, Dietary Metabolism Urban Health Young Adult Adolescent: 13-18 years Adult: 19-44 years Female Male ab: Background: High US sodium intake and national reduction efforts necessitate developing a feasible and valid monitoring method across the distribution of low-to-high sodium intake.Objective: We examined a statistical approach using timed urine voids to estimate the population distribution of usual 24-h sodium excretion.Methods: A sample of 407 adults, aged 18-39 y (54% female, 48% black), collected each void in a separate container for 24 h; 133 repeated the procedure 4-11 d later. Four timed voids (morning, afternoon, evening, overnight) were selected from each 24-h collection. We developed gender-specific equations to calibrate total sodium excreted in each of the one-void (e.g., morning) and combined two-void (e.g., morning + afternoon) urines to 24-h sodium excretion. The calibrated sodium excretions were used to estimate the population distribution of usual 24-h sodium excretion. Participants were then randomly assigned to modeling (n = 160) or validation (n = 247) groups to examine the bias in estimated population percentiles.Results: Median bias in predicting selected percentiles (5th, 25th, 50th, 75th, 95th) of usual 24-h sodium excretion with one-void urines ranged from -367 to 284 mg (-7.7 to 12.2% of the observed usual excretions) for men and -604 to 486 mg (-14.6 to 23.7%) for women, and with two-void urines from -338 to 263 mg (-6.9 to 10.4%) and -166 to 153 mg (-4.1 to 8.1%), respectively. Four of the 6 two-void urine combinations produced no significant bias in predicting selected percentiles.Conclusions: Our approach to estimate the population usual 24-h sodium excretion, which uses calibrated timed-void sodium to account for day-to-day variation and covariance between measurement errors, produced percentile estimates with relatively low biases across low-to-high sodium excretions. This may provide a low-burden, low-cost alternative to 24-h collections in monitoring population sodium intake among healthy young adults and merits further investigation in other population subgroups. pubtype: Academic Journal doctype: research randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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