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Evaluation of the Haemoglobin Colour Scale and comparison with the HemoCue haemoglobin assay

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Název: Evaluation of the Haemoglobin Colour Scale and comparison with the HemoCue haemoglobin assay
Autoři: Paddle J.J.
Zdroj: Bulletin of the World Health Organization, Vol 80, Iss 10, Pp 813-816 (2002)
Informace o vydavateli: The World Health Organization, 2002.
Rok vydání: 2002
Sbírka: LCC:Public aspects of medicine
Témata: Hemoglobinometry/methods, Reference standards, Comparative study, Developing countries, Public aspects of medicine, RA1-1270
Popis: OBJECTIVE: To evaluate the Haemoglobin Colour Scale developed by WHO for estimating haemoglobin concentration and to compare the results obtained using it and the HemoCue assay with those determined using a reference method, the Technicon H3 analyser. METHODS: The Colour Scale and HemoCue assay were used to test 408 blood samples. Subsequently, Bland-Altman plots were determined and the proximity of the test results to those obtained using the reference method was determined. FINDINGS: The mean difference between the Haemoglobin Colour Scale and the reference method was 0.19 g/dl (95% confidence interval: 3.50 g/dl below to 3.11 g/dl above); the corresponding value for the HemoCue assay was 0.50 g/dl (1.16 g/dl below to 0.16 g/dl above). Only 46.08% of the results obtained by means of the Colour Scale were within 1.0 g/dl of the reference method, whereas 95.34% of the HemoCue results fell within this limit; 22.79% of the Colour Scale results but none of the HemoCue results lay more than 2.0 g/dl from the reference method. CONCLUSION: The Haemoglobin Colour Scale test is too inaccurate for general use, particularly if devices such as the HemoCue are available.
Druh dokumentu: article
Popis souboru: electronic resource
Jazyk: English
ISSN: 0042-9686
Relation: http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0042-96862002001000010; https://doaj.org/toc/0042-9686
Přístupová URL adresa: https://doaj.org/article/1f281526be3b45f087dc0cb4622a5a00
Přístupové číslo: edsdoj.1f281526be3b45f087dc0cb4622a5a00
Databáze: Directory of Open Access Journals
Popis
Abstrakt:OBJECTIVE: To evaluate the Haemoglobin Colour Scale developed by WHO for estimating haemoglobin concentration and to compare the results obtained using it and the HemoCue assay with those determined using a reference method, the Technicon H3 analyser. METHODS: The Colour Scale and HemoCue assay were used to test 408 blood samples. Subsequently, Bland-Altman plots were determined and the proximity of the test results to those obtained using the reference method was determined. FINDINGS: The mean difference between the Haemoglobin Colour Scale and the reference method was 0.19 g/dl (95% confidence interval: 3.50 g/dl below to 3.11 g/dl above); the corresponding value for the HemoCue assay was 0.50 g/dl (1.16 g/dl below to 0.16 g/dl above). Only 46.08% of the results obtained by means of the Colour Scale were within 1.0 g/dl of the reference method, whereas 95.34% of the HemoCue results fell within this limit; 22.79% of the Colour Scale results but none of the HemoCue results lay more than 2.0 g/dl from the reference method. CONCLUSION: The Haemoglobin Colour Scale test is too inaccurate for general use, particularly if devices such as the HemoCue are available.
ISSN:00429686