Social & Preventive Medicine obstetrics,pediatrics and geriatrics 85f892d8 Child survival index is calculated by? A 1000-IMR\/10 B IMR -1000\/10 C 1000-U5MR\/10 D U5MR-1000\/10 High-Yield Explanation Park's textbook of preventive and social medicine 23rd edition. *Child survival rate =(1000- under 5 moality rate)/10.