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"QUAC-stick" in assessment of nutritional status of pre-school children.

The nutritional status of 918 preschoolers from Agra India was examined using 2 methods and standards: The Quac-stick and weight for age measures. The former sizes the circumference of the arm and is age independent; the latter is a simple measurement which considers weight as a function of age. By using the Quac-stick standards (armcircumference for height) below 85% and 80% of NCHS standards the percentage of children deemed "malnourished" was 34.75 and 8.2% respectively. The less than 80% standard using weight for age found 38.3% below that percentage. Using weight for age falling below 80% and a Quac-stick standard falling below 85% different numbers of children were counted as malnourished in the 2 methods. Using statistical sensitivity calculations it is concluded that the Quac-stick method at a less than 85% standard is a more sensitive index than the less than 80% weight for age in detecting subclinical malnutrition. The Quac-stick standard of less than 80% was not as sensitive as the less than 80% weight for age limit. Early detection of malnutrition is crucial for preventing future physical and mental complications. Sensitivity of malnutrition detection methods is therefore crucial as a preventive public health measure.