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Which of the following is considered a secondary source of evidence? Randomized controlled trial Meta-analysis Textbook...

Which of the following is considered a secondary source of evidence?

Randomized controlled trial

Meta-analysis

Textbook

Case study

When conducting a literature search, which conjunction (Boolean operator) would you use if you want to increase the number of articles that you find?

a)

OR

b)

AND

c)

NOT

d)

YET

Solutions

Expert Solution

Answers

Q1- Answer is option C- Textbook

              Textbook is an example for secondary source of evidence why because the author is not participated directly or became an eyewitness in the historical event or periods while the other three options are included in the primary source of evidence.

Q2- Answer is option A- OR

         The Boolean operator “OR” will helps to expand the number of search results for all possible variations with the same meaning. “AND” will narrow the search results to include only the relevant results and “NOT” will limit the result by excluding the keywords and phrases from the results. YET is not included in the Boolean operators.

Nightingale answered 2 years ago
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