This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'Which of the following is the reference standard on which classification of protein-energy malnutrition is based – \nSelect and explain. \nA. Gomez classification, B. 10th percentile of weight for age of ICMR, C. 80% of the 50th percentile of weight of ICMR, D. 80% of the 50th percentile of weight for age of American standard', 'role': 'user'}, {'content': 'Answer: D \nExplanation: For national and international comparisons and for monitoring, "reference or standard values" of growth are essential.\nThe well known reference standards are -\n\n1. Harvard (or Boston) standards\n\nNot in common used\nHave been replaced by WHO reference values\n\n2. WHO reference values\n\nMost commonly used reference values for international use.\nThese values are based on the data assembled by the United States National Centre for health statistics (NCHS).\nClassification of PEM is based on these standards.\n\n3. Indian standards\n\n\xa0Are used for Indian children\nValues are based on the data assembled by the Indian Council of Medical Research (ICMR)\n\nNote -\n\n\nThe normal, expected value is 50th percentile of the reference value.\nWhen weight for age is <80% of expected (expected = 50th percentile of reference) → wasting.\nWhen height for age is <90% of expected (expected = 50th percentile of reference) → stunting.', 'role': 'assistant'}]