<prompt> Which of the following is the reference standard on which classification of protein-energy malnutrition is basedGomez classification10th percentile of weight for age of ICMR80 of the 50th percentile of weight of ICMR80 of the 50th percentile of weight for age of American standard  <response>: For national and international comparisons and for monitoring, reference or standard values of growth are essential.The well known reference standards are -1. Harvard or Boston standardsNot in common usedHave been replaced by WHO reference values2. WHO reference valuesMost commonly used reference values for international use.These values are based on the data assembled by the United States National Centre for health statistics NCHS.Classification of PEM is based on these standards.3. Indian standards Are used for Indian childrenValues are based on the data assembled by the Indian Council of Medical Research ICMRNote -The normal, expected value is 50th percentile of the reference value.When weight for age is 80 of expected expected 50th percentile of reference wasting.When height for age is 90 of expected expected 50th percentile of reference stunting. 