Use a uniform instrument to estimate fall rate.
D000058:Accidental Falls / Q000706:statistics & numerical data*; D003625:Data Collection / Q000592:standards*; D003627:Data Interpretation, Statistical; D006761:Hospitals / Q000706:statistics & numerical data; D006801:Humans; D011159:Population Surveillance; D012307:Risk Factors; D012308:Risk Management / Q000379:methods*; D014481:United States / Q000453:epidemiology