Multiple Choice
The Baltimore Longitudinal Study of Aging (BLSA) is a research study of normative aging started in the 1950s.Volunteers,free of chronic conditions,are recruited and followed every 4,2,or 1 year(s) until their death.What type of study design is this?
A) Cross-sectional
B) Ecologic
C) Randomized trial
D) Retrospective cohort
E) Prospective cohort
Correct Answer:
Verified
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