Modifications of the rate of syncope, in all the patients who presented to ED for syncope and in subpopulations of different age and gender, grouped according to three epochs.

Max Temperature is the mean ± SD of daily Maximal Temperatures. Max Temperature Variability is the mean ± SD of day by day Maximal Temperatures variations in each epoch. Admitted Syncope refers to patients admitted to hospital for syncope. n is the number; ‰ is the number of Syncope ED visits per thousand, in respect to Total ED visits; % is the percentage of Admitted Syncope in respect to Syncope ED visits and of Syncope aged >75 yrs in respect to Syncope ED visits.*p§p#p