Eg 4y 5m weight. To enter pounds and ounces enter.
Lexile Score Ssat Score Scale
Weight for height z score interpretation. For example on the height for age distribution for a 36 month old boy the distance from a z score of 2 to a z score of 1 is 38 cm. At the extremes 98th percentile or 2nd percentile small differences in percentiles represent clinically important differences in weightheight. Valid ages from 2 to 20 years age. Predicted percentiles and z scores much over the 95th percentile using the cdc charts may be inaccurate. Head circumference for age and older children weight for stature. The same difference is found between a z score of 0 and a z score of 1 on the same distribution.
One data point mid upper arm 1 to 19 2 to 29 3 circumference heightlength for age 3 z score bmi for age z score 1 to 19 2 to 29 3 weight for 1 to 19 2 to 29 3 heightlength z score malnutrition mild moderate severe. Slower weight gain from age 3 12 months deviation of growth occurs when babies are already on solids ie not deficiency less effect on length than weight at 2 years average weight close to reference. Eg 8 4 for 8 lb and 4 oz height. Absence of acute protein energy malnutrition or normal nutritional status is defined as having a weight for height z score of 20 or greater. Available means and sds of z scores of survey data are being included in the global database. The values corresponding to specific z scores 2 15 1 050 051152 are contained in 8 excel data files representing the 8 different growth curves for infants weight for age.
Thus the only choice available for a clinician and it is a highly serviceable one is converting the childs weight for age to a z score and tracking it over time. Moderate acute protein energy malnutrition is defined as having a weight for height z score of 30 to less than 20. Interpreting the results in terms of z scores has several advantages. Z score can be used in different fields wherever statistical measurement is required. To enter years and months enter y m. The expected ranges of standard deviations of the z score distributions for the three anthropometric indicators are as follows 5.
More simply z score score mean sd. It is not valid for standing height. However in case of nutrition we usually calculate z score for weight for height height for age and weight for age. Weight for length or weight for height that is calculated based on inaccurate lengths or heights is also inaccurate. Nutr clin pract november 2014 doi. At these extremes the z score is a more precise reflection of how far the measurement deviates from the mean and is a useful tool for tracking changes.
The z score scale is linear and therefore a fixed interval of z scores has a fixed height difference in cm or weight difference in kg for all children of the same age. Dewey kg et al.
Gallery of Weight For Height Z Score Interpretation
