What type of literature may a systematic review include to be considered Level 1 evidence on the Melnyk & Fineout-Overholt levels of evidence hierarchy?
A. Phenomenology studies
B. Grounded theory studies
C. Descriptive studies
D. Cohort studies
E. Controlled trials without randomization
F. Randomized controlled trials
What type of study is described in the following excerpt?
An interprofessional team wants to test a new intervention to see whether it will improve central-line associated bloodstream infection (CLABSI) rates. Subjects were randomized into either the intervention or the control group by pulling a slip of paper with either a one or a two written on it from a manila envelope (those pulling ones were randomized to the intervention group; those pulling twos were randomized to the control group). When the study began, the intervention group received the intervention and the control group received equal attention. Data was collected and analyzed using the Statistical Package for the Social Sciences (SPSS). Descriptive statistics were used to report the data.
What type of research article is this?
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