Ean age (y)Sample Size: In absence of reference data, prevalence of polypharmacy was assumed to be 50 . Sample size N = (Z1-/2)2*pq / l2 Hypothesized frequency of outcome factor in the population, (p): 50 Confidence limits as of 100(absolute +/- ) (l): 5 Z1-/2 value for 95 confidence interval: 1.96 N 96 data collection procedure: Data was collected through review of case sheets of all eld


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