Table 3.

Relative excess mortality (%) and % of emergency room visits for heat-related causes occurring during heat waves

	Year	Excess mortality (%)	Hyperthermia (% of visits occurring during heat waves)	Dehydration (% of visits occurring during heat waves	Hyponatremia (% of visits occurring during heat waves
Under 15	2015	16.4%	27%	14%	0%
	2016	−21.0%	5%	2%	3%
	2017	−19.2%	22%	9%	5%
	2018	12.1%	23%	13%	12%
	2019	2%	37%	17%	16%
15–44 years	2015	−4.8%	25%	17%	13%
	2016	−4.1%	4%	2%	3%
	2017	7.4%	21%	11%	12%
	2018	12.5%	22%	15%	12%
	2019	12.5%	44%	22%	15%
45–64 years	2015	9.8%	25%	13%	11%
	2016	6.4%	6%	2%	3%
	2017	2.2%	23%	10%	6%
	2018	8.0%	24%	15%	11%
	2019	3.6%	46%	20%	16%
65–74 years	2015	13.7%	29%	16%	12%
	2016	27.2%	7%	2%	3%
	2017	9.6%	21%	10%	9%
	2018	25.4%	22%	16%	12%
	2019	13.0%	47%	23%	16%
Over 75	2015	22.5%	33%	17%	14%
	2016	12.7%	11%	3%	3%
	2017	6.2%	38%	12%	10%
	2018	14.2%	28%	18%	14%
	2019	9.4%	50%	23%	20%