Fig. 5From: Heat stroke admissions during heat waves in 1,916 US counties for the period from 1999 to 2010 and their effect modifiersThe relative risk (RR) of heat stroke on heat wave days as compared with matched control days by definition of a heat wave event. The definitions of heat wave are temperature >97th, 98th, or 99th percentile for at least two or four consecutive daysBack to article page