Which of the following is a true statement regarding longitudinal studies?
AIncidence rate can be calculated
BStudies natural history of disease
CPrimarily designed to establish causation
DMore time consuming than cross-sectional studies
Which one of the following is a good index of the severity of an acute disease?
ACause specific death rate
BCase fatality rate
CStandardized mortality ratio
DFive year survival
Which analysis method categorizes items based on their expenditure, identifying a small number of high-value items and a large number of low-value items?
AABC analysis
BSUS analysis
CHML analysis
DVED analysis
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