The objective of this descriptive study was to evaluate the performance of the international World Health Organization (WHO) child growth standards in the Czech Republic and determine the prevalence of wasting among children using the 1991 Czech growth reference and the WHO growth standards. The study utilized the 2006 WHO Child Growth Standards and the 1991 Czech growth references. The WHO standards were based on a longitudinal study of 882 children aged 0-24 months and on cross-sectional studies of 6669 children aged 18-71 months. The 1991 Czech growth references were based on a cross-sectional survey including 90 910 children aged 0-18 years (34 164 were children aged < 5 years). The prevalence of wasting was significantly higher among Czech children when using the WHO growth standards compared with the Czech references. The prevalence of wasting among 0-5-month-old children was 15.5% among boys and 12.9% among girls compared with the expected 2.3% of the WHO standards. In the length category of 50 cm, 9.0% of boys and 9.9% of girls fell under the WHO wasting cut-off compared with the 3% from the Czech growth reference. The application of the WHO growth standards may results in a significant increase of Czech children classified in the category of wasting, especially among infants aged 0-5 months. The performance and potential impacts of the WHO growth standards should be evaluated further before their adoption in the Czech Republic and other countries with local growth references.
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