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be inferred. It is because of the strengths that meta-analysis of RCTs which integrate evidence from across multiple experimental studies, are at the pinnacle of evidence hierarchies for questions about treatment effects. Hypotheses are never proved by scientific methods, but RCTs offer the most convincing evidence about whether one variable has a causal effect on another.”To compare to my classmate Maria, the goal of her study of choice is to “determine how a nurses' knowledge as it relates to chest pain management associates with particular demographics; age, level of education, gender, experience or training (Abbas, 2015)”. It is a primary study in contrast to the study that I chose- a meta-analysis of a multitude of study’s to compile the sought out data of cranberry-containing products for prevention of urinary tract infections in susceptible populations. References:Polit, D. F., & Beck, C. T. (2017). Nursing Research: Generating and assessing evidence for nursing practice.Philadelphia: Lippincott Williams & Wilkins.Wang, C.H., Fang, C.C., Chen, N.C., Liu, S.S., Yu, P.H., Wu, T.Y., Chen, W.T., Lee, C.C., Chen, S.C. (2012). Cranberry-Containing Products for Prevention of Urinary Tract Infections in Susceptible Populations: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Retrieved from -Containing_Products_for_Prevention_of_Urinary_Tract_Infections_in_Susceptible_Populations_A_Systematic_Review_and_Meta-analysis_of_Randomized_Controlled_Trials