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Stratified samples may use weighted means so that estimates of the overall sample may be made,as opposed to estimates from each stratum.
Electrical Shock
An injury caused by electric current passing through the body.
Cardiovascular Disease
A class of diseases that involve the heart or blood vessels, including coronary artery disease, hypertension, heart failure, and stroke.
Risk Factor
Anything that increases an individual's likelihood of developing a disease or injury.
Age
The length of time that a person has lived or a thing has existed, often affecting physical and mental capabilities.
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