Frequency - United States
Sex
Age
Race
Frequency - International
A CDC study of 1,117 patients showed that 1,046 (94%) of patients were non-Hispanic white, 19 (2%) were Hispanic, 12 (1%) were black, and 40 (4%) were from other or unknown racial or ethnic groups.
Of the 1,117 subjects in the CDC study, 927 (83%) of patients were female.
Other countries reporting cases of EMS include Germany (100 cases), Canada (12 cases), and the United Kingdom (11 cases).
The CDC study of 1,117 patients showed that patients with EMS were aged 4-85 years, with a median age of 48 years.
From October 30, 1989, to January 31, 1993, a total of 1,512 cases of EMS were reported. However, only 1,345 of those fulfilled the CDC's surveillance case definition for EMS. An overwhelming majority of the cases of EMS occurred in the United States.
