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Research Evidence Appraisal Tool Study Notes

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Johns Hopkins Nursing Evidence-Based Practice

Appendix E

Research Evidence Appraisal Tool

Evidence level and quality rating:

Article title:

Number:

Author(s):

Publication date:

Journal:

Setting:

Sample

(composition and size):

Does this evidence address my EBP question?

Yes

No-

Do not proceed with appraisal of this evidence

Is this study:

QuaNtitative (collection, analysis, and reporting of numerical data)

Measurable data (how many; how much; or how often) used to formulate facts, uncover patterns in

research, and generalize results from a larger sample population; provides observed effects of a

program, problem, or condition, measured precisely, rather than through researcher interpretation of

data. Common methods are surveys, face-to-face structured interviews, observations, and reviews of

records or documents. Statistical tests are used in data analysis.

Go to

Section I: QuaNtitative

QuaLitative (collection, analysis, and reporting of narrative data)

Rich narrative documents are used for uncovering themes; describes a problem or condition from the

point of view of those experiencing it. Common methods are focus groups, individual interviews

(unstructured or semi structured), and participation/observations. Sample sizes are small and are

determined when data saturation is achieved. Data saturation is reached when the researcher identifies

that no new themes emerge and redundancy is occurring. Synthesis is used in data analysis. Often a

starting point for studies when little research exists; may use results to design empirical studies. The

researcher describes, analyzes, and interprets reports, descriptions, and observations from participants.

Go to

Section II: QuaLitative

Mixed methods (results reported both numerically and narratively)

Both quaNtitative and quaLitative methods are used in the study design. Using both approaches, in

combination, provides a better understanding of research problems than using either approach alone.

Sample sizes vary based on methods used. Data collection involves collecting and analyzing both

quaNtitative and quaLitative data in a single study or series of studies. Interpretation is continual and

can influence stages in the research process.

Go to

Section III: Mixed Methods

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Johns Hopkins Nursing Evidence-Based Practice

Appendix E

Research Evidence Appraisal Tool

Section I: QuaNtitative

Level of Evidence (Study Design)

Is this a report of a single research study?



Yes



Go to B

1. Was there manipulation of an independent variable?



Yes



2. Was there a control group?



Yes



3. Were study participants randomly assigned to the intervention

and control groups?



Yes



If Yes to questions 1, 2, and 3, this is a randomized controlled trial (RCT) or

experimental study.

LEVEL I

If Yes to questions 1 and 2 and No to question 3 or Yes to question 1 and

No to questions 2 and 3, this is quasi-experimental.

(Some degree of investigator control, some manipulation of an independent variable,

lacks random assignment to groups, and may have a control group).

LEVEL II

If No to questions 1, 2, and 3, this is nonexperimental.

(No manipulation of independent variable; can be descriptive, comparative, or

correlational; often uses secondary data).

LEVEL III

Study Findings That Help Answer the EBP Question

Skip to the Appraisal of QuaNtitative Research Studies section

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Johns Hopkins Nursing Evidence-Based Practice Appendix E Research Evidence Appraisal Tool Evidence level and quality rating: Article title: Number: Author(s): Publication date: Journal: Setting: Sample (composition and size): Does this evidence address my EBP question? Yes No-Do not proceed with appraisal of this evidence Is this study: QuaNtitative (collection, analysis, and reporting of numerical data) Measurable data (how many; how much; or how often) used to formulate facts, uncover patterns in research, and generalize results from a larger sample population; provides observed effects of a program, problem, or condition, measured precisely, rather than through researcher interpretation of data. Common methods are surveys, face-to-face structured interviews, observations, and reviews of records or documents. Statistical tests are used in data analysis. Go to Section I: QuaNtitative QuaLitative (collection, analysis, and reporting of narrative data) Rich narrative documents are used for uncovering themes; describes a problem or condition from the point of view of those experiencing it. Common methods are focus groups, individual interviews (unstructured or semi structured), and participation/observations. Sample sizes are small and are determined when data saturation is achieved. Data saturation is reached when the researcher identifies that no new themes emerge and redundancy is occurring. Synthesis is used in data analysis. Often a starting point for studies when l ...
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