Prospective Cohort Study Analysis Task
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A Prospective Cohort Study Analysis Task is a group-based study analysis task of prospective cohort data (for a prospective cohort study where study group assignment precedes study group observation).
- Example(s):
- Counter-Example(s):
- See: Posthoc Analysis, Prospective Data Analysis Task.
References
2008
- (Park, 2008) ⇒ Hun Myoung Park (2008). “Hypothesis testing and statistical power of a test". The University Information Technology Services (UITS) Center for Statistical and Mathematical Computing, Indiana University, 102. URL: http://hdl.handle.net/2022/19738 , Full Report(PDF file)
- What is the power of a test? The power of a statistical test is the probability that it will correctly lead to the rejection of a false null hypothesis (Greene, 2000). The statistical power is the ability of a test to detect an effect, if the effect actually exists (High, 2000). Cohen (1988) says, it is the probability that it will result in the conclusion that the phenomenon exists (p.4). A statistical power analysis is either retrospective (post hoc) or prospective (a priori). A prospective analysis is often used to determine a required sample size to achieve target statistical power, while a retrospective analysis computes the statistical power of a test given sample size and effect size.