Review of Study Types/Designs – PST06210 Operational Research

NTA Level 6 • Semester 2 • PST06210

Review of Study Types/Designs

Operational Research • Source Session/Topic 12
Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability.

Session 12: Review of Study Types/Designs

Total Session Time: 120 minutes

Prerequisites

 None

Learning Tasks

By the end of this session students are expected to be able to:

• Describe the study types most used in research
• Explain uses and limitation of each study type most used in research
• Describe how the study design can influence the validity and reliability of the study result
• Identify the most appropriate study design for research proposal being developed

Resources Needed

 Flip charts, marker pens, and masking tape

 Black/white board and chalk/whiteboard markers

 Computer and LCD Projector

SESSION OVERVIEW

Activity/

Step Time Content

Method

1 05 minutes Presentation Introduction, Learning Tasks

Presentation

2 40 minutes Study Types Most Used in Research

Brainstorming

Presentation Uses and Limitation of Study Types most Used in

3 35 minutes

Buzzing Research

4 15 minutes Presentation Influence of Study Design on the Validity and

Reliability of the Study Result

10 minutes Presentation

5 Identification of the Most Appropriate Study Design

for Research Proposal being developed

6 05 minutes Presentation Key Points

7 05 minutes Presentation Evaluation

8 05 minutes Presentation Assignment

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SESSION CONTENTS

STEP1: Presentation of Session Title and Learning Tasks (5 minutes)

READ or ASK students to read the learning tasks and clarify

ASK students if they have any questions before continuing

STEP 2: Study Types Most Used in Research (10 minutes)

Activity: Brainstorming (10 minutes)

Ask students to brainstorm on the following question:

 What study types are mostly used in research?

ALLOW few students to respond?

WRITE their responses on the flip chart/ board

CLARIFY and SUMMARISE by using the content below

REFER SESSION 6

STEP 3: Uses and Limitation of Each Study Type Most Used in Research

(10 minutes)

Activity: Buzzing (5 minutes)

ASK students to pair up and buzz on the following question for 2 minutes

• ‘What are the uses and limitation of each study type most used in research?

ALLOW few pairs to respond and let other pairs to add on points not mentioned

WRITE their response on the flip chart/board

CLARIFY and SUMMARIZE by using the content in SESSION 6

___________________________________________________________________________

PST 06210 Operational Research NTA Level 6 Semester 2 Facilitator Guide 99

___________________________________________________________________________

PST 06210 Operational Research NTA Level 6 Semester 2 Facilitator Guide

100

STEP 4: Influence of Study Design on the Validity and Reliability of the

Study Result (15 minutes)

• Validity: means that your scientific observations actually measure what they

intend to

measure (your conclusions are true).

o Internal validity: Difference in the dependent variable is actually a result of the

o independent variable.

o External validity: Results of the study are generalizable to other groups and

environments outside the experimental setting.

• Reliability: means that someone else using the same method in the same

circumstances

should be able to obtain the same findings (your findings are repeatable).

o Reliability (repeatability) refers to the possibility to replicate (repeat) the

observations

and is related to the precision of the instrument used for scientific

observations.

o Validity refers to the soundness of the observations and to the accurateness

of the data collected by the research method/instrument.

STEP 5: Identification of the Most Appropriate Study Design for Research

(10 Minutes)

 Consider:

o Nature of the problem/topic

o State of knowledge about the problem/topic

o Resources available

o Skills of the researcher

STEP 6: Key Points (5 minutes)

 A descriptive study involves describing the characteristics of a particular situation, event

or case

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PST 06210 Operational Research NTA Level 6 Semester 2 Facilitator Guide

101

 An analytical study attempts to establish causes or risk factors for certain problems

 Any study designs used, should give valid and reliable findings

STEP 7: Evaluation (5 minutes)

 What study types are most used in research?

 What will you consider when selecting study design for research proposal?

STEP 8: Assignment (5 minutes)

Activity: Take Home Individual Assignment (5 minutes)

ASK each student to select an appropriate study type/design for a research proposal being

developed

ALLOCATE time for students to do the assignment and submit

REFER students to recommended reference

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102

References

Hardon A, Boonmongkon P, and Streefland P. et al (2001). Applied Health research,

Anthropology of health and health care, (3rd Ed) Amsterdam, The Netherlands: Het

Spinhuis Publishers

Beaglehole R, Bonita R and Kjellstrom (1993) Basic epidemiology: Geneva, Switzerland:

World Health Organization,

Kothari C.R (1985). Research Methodology – Methods and techniques, (2nd ed); New Delhi,

India; Wiley Eastern Limited

Stewart A (2001). Basic Statistics and epidemiology, A practical guide,; London, United

Kingdom: Radcliffe Medical Press,

Varkevisser, C. M, Pathmanathan, I and Brownlee, A (1991). Designing and Conducting

Health Systems Research Projects, Vol. 2 Part I: Ottawa, Canada: IDRC

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PST 06210 Operational Research NTA Level 6 Semester 2 Facilitator Guide

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