The relation between ambulance transports stratified by heat stroke and air temperature in all 47 prefectures of Japan in August, 2009: ecological study

Table 2 Simple correlation analysis between numbers of ambulance transports stratified by heat stroke and air temperature parameters in 47 prefectures

	Ambulance transports stratified by heat stroke
	Per total number of ambulance transports (%)		Per 10,000 persons
	r	p	r	p
Mean of the mean air temperature (°C)	0.686	<0.0001	0.797	<0.0001
Mean of the highest air temperature (°C)	0.708	<0.0001	0.799	<0.0001
Mean of the lowest air temperature (°C)	0.609	<0.0001	0.739	<0.0001
The highest air temperature (°C)	0.713	<0.0001	0.673	<0.0001
The lowest air temperature (°C)	0.548	<0.0001	0.703	<0.0001

ISSN: 1347-4715