Solar activity and mortality in the United States.
Mortality from all causes, from coronary heart disease, and from stroke in the US was studied in relation to solar activity as measured by the geomagnetic index, Ap, on a daily basis for the years 1964-66 and on a monthly basis for the years 1964-71. The data did not support previous assertions by Soviet researchers of an association between solar activity and cardiovascular mortality.
D055580:Astronomical Phenomena; D001256:Astronomy; D002318:Cardiovascular Diseases / Q000401:mortality*; D002561:Cerebrovascular Disorders / Q000401:mortality; D003327:Coronary Disease / Q000401:mortality; D006801:Humans; D008280:Magnetics; D009026:Mortality; D013472:Sunlight; D014481:United States