| Description |
1 online resource (11 pages) : color illustrations. |
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text rdacontent |
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computer rdamedia |
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online resource rdacarrier |
| Series |
National health statistics reports ; no. 54 |
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DHHS publication ; no. (PHS) 2012-1250 |
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National health statistics reports ; no. 54.
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DHHS publication ; no. (PHS) 2012-1250.
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| Note |
"July 12, 2012." |
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Title from title screen (viewed on Oct. 22, 2014). |
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"CS230449." |
| Bibliography |
Includes bibliographical references (pages 6-7). |
| Access |
Use copy Restrictions unspecified star MiAaHDL |
| Summary |
Objective--Biological variation consists of between-person (BP) and within-person (WP) variation. Estimates of WP coefficients of variation (CVw) and BP coefficients of variation (CVg) for hematology laboratory tests were estimated from the 1999-2002 National Health and Nutrition Examination Survey (NHANES). Methods--NHANES is a survey of the civilian noninstitutionalized U.S. population that uses a stratified, multistage probability design. Between- and within-person variations were estimated for 18 hematology tests. For WP variation, a nonrandom sample was obtained with a median of 17 days between two test measurements. Between-person variation was estimated from the WP sample and additional participants were matched for age group, gender, and race and ethnicity to the WP sample. Results--The BP and WP variations were estimated on as many as 2,496 and 852 sample participants, respectively. Mean corpuscular hemoglobin concentration had the lowest CVg (2.25% for men and 2.40% for women), and mean corpuscular volume had the lowest CVw (0.31% for men and 0.37% for women). The index of individuality (CVw /CVg) ranged from 0.06 for mean corpuscular volume for men and women to 0.62 for segmented neutrophil number for men, and 0.55 for segmented neutrophil percent for women. Women had higher CVw compared with men for hematocrit, hemoglobin, mean corpuscular volume, red blood cell count, and red blood cell distribution width. Several hematology tests' CVw also differed by age group, including mean corpuscular volume; eosinophil, lymphocyte and segmented neutrophil percent; monocyte and segmented neutrophil number; white blood cell count; and red blood cell distribution width. |
| Reproduction |
Electronic reproduction. [S.l.] : HathiTrust Digital Library, 2011. MiAaHDL |
| System Details |
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212 MiAaHDL |
| Processing Action |
digitized 2011 HathiTrust Digital Library committed to preserve pda MiAaHDL |
| Subject |
National Health and Nutrition Examination Survey (U.S.)
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National Health and Nutrition Examination Survey (U.S.) (OCoLC)fst00626984
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Blood -- Analysis -- Statistics.
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Blood -- Analysis.
(OCoLC)fst00834552
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Bias (Epidemiology) |
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Clinical Laboratory Techniques -- standards. |
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Hematology -- standards. |
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Nutrition Surveys. |
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United States. |
| Genre/Form |
Statistics. (OCoLC)fst01423727
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Ebook.
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| Added Author |
Barletta, Janet, author.
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Hughes, Jeffery P., author.
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National Center for Health Statistics (U.S.), issuing body.
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| Other Form: |
Paper version: Lacher, David A. Biological variation of hematology tests based on the 1999-2002 National Health and Nutrition Examination Survey (OCoLC)851079469 |
| Gpo Item No. |
0500-E-18 (online) |
| Sudoc No. |
HE 20.6209/3-2:54 |
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