data collection tools development: quantitative data · research questions and their corresponding...
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Data Collection Tools Development:
Quantitative data
First Training Workshop on Research Capacity Strengthening and Proposal Development for
Basic Health Services Professionals
16 – 23 February 2020 DMR, Pyin Oo Lwin
Le Le Win Deputy Director (Retired)
Health Systems Research Division Department of Medical Research
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What is data?
• numerical facts collected together for reference or for
information
• observations or measurement characteristics of person,
objects, etc.
• actual measurement
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Variables Data
Examples
(i) Age of a child = variable
10 years = age data of the study population
(ii) Sex = variable
male / female (Data)
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What is data collection?
• A process of gathering and measuring information
on targeted variables in an established system to
answer relevant questions and evaluate outcomes
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Why do we need data collection methods?
• allow systematic data collection about objects of study
(people, households, RHC, etc.)
• certain set of facts are collected about a large no. of
persons
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Quantitative data
• measures of values or counts
• expressed in numbers and statistics
• data about numeric variables
e.g., how many, how much or how often
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Types of Quantitative data
(i) Secondary data
(ii) Primary data
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Secondary data
• Use available information
• A large body of data already collected by others
• It may not necessarily have analyzed or published
• Need to locate sources and retrieve the information
Types of secondary data
• Census data
• Unpublished reports
• Hospital records
• Information routinely collected by others such as
researchers, anthropologists, HMIS data, etc. 8
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Sources of published
secondary data
• Government publications
• Publications of UN, INGOs,
etc.
• Journals
• Books, magazines,
newspapers
• Reports
• Thesis
• Statistical year book
• Public records, historical
documents
• Etc.
Source of unpublished
secondary data
• Diary
• Letters
• Unpublished
biographies, auto-
biographies
• Etc.
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Caution when using secondary data
• Reliability of data
• Suitability for data relating to the study under
problem
• Adequacy of data
missing required or lack of data such as
interested years / age group, etc.
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Primary data
• Original in character
• Provide first-hand information or direct evidence of event
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Quantitative data collection tools for primary data
• Interview methods (Questionnaires)
• Self-administered questionnaires
• Mail questionnaires
• Structured Observation checklist
• Electronic data capture
• Web-based questionnaires
• Performance based instruments
• Through schedules (proforma)
• Etc.
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1. Interview methods
Personal interviews (FTFI)
• useful when researcher is relatively knowledgeable about
expected answers and when no. of respondents being
interviewed is relatively large
• use a questionnaire with a fixed list of questions in a
standard sequences
• interviewers can probe for responses
• interviewers and respondents can clarify uncertainties
• more complicated and detailed questions can be asked
• no literacy requirements for respondents 13
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2. Self-administered questionnaire (SAQ)
• administering written questionnaire
• answer by respondents in written form
• useful in collection of data on sensitive topics
e.g., opinion on supervision, use of drug, etc.
• instructions or questions are more likely to be misunderstood
without an interviewer to help explain them
• portions of questionnaire are more likely to be left blank
• difficult to incorporate many conditional sequences of
questions (skip questions) 14
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Ways of gathering data by Self-administered questionnaire
(i) Gather respondents in one place at one time
• give oral or written instructions
• 2 ways of recording the questionnaire
respondents fill out the questionnaire and may help
them in recording their answers
questions are filled in by the interviewers
(ii) Hand-deliver questionnaires to respondents and collect later
(iii) Mailing
(iv) Online 15
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Types of questionnaires
• Structured
• Un-structurerd
• Semi-structured
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Structured questionnaires
• appropriate when straight forward factual information
are desired
• fixed-standardised questions
• close-ended answers
• pre-coded response choices
• presented to respondents in the same way, no variation
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Example
Result of the interview (Circle the appropriate code) |_|
1 = completed
2 = partially completed
3 = refusal
4 = not at home
5 = no eligible age group at home
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Unstructured questionnaires
• a combination of fixed questions
• allows the interviewer to probe
• enable the respondent to raise other relevant issues
• use open-ended questions
Example
What is your opinion on services provided at this health
centre? |_|
-------------------------------------------------------
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Semi-structured interview
• ask a certain no. of specific questions
• additional probes are allowed and encouraged
• include both open- and closed-ended questions
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Example
Result of the interview (Circle the appropriate code) |_|
1 = completed
2 = partially completed (please specify)
3 = refusal
4 = not at home
5 = no eligible age group at home
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Reason for partially completed |_|
-------------------------------------------------------------------
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Example
Objective
To determine TB Knowledge, Attitude and Practices of urban
community members
Source: WHO. 2008. A guide to developing
Knowledge, Attitude and Practice Survey
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Background characteristics
1. Age (completed years) ------- |_|_|
2. Sex |_|
1 = male 2 = female
3. Marital status |_|
1 = unmarried (skip to Q 5) 2 = married (go to Q4)
4. How many children do you have? ------------- |_|_|
5. Occupation |_|
1 = Dependent
2 = Government staff
3 = Private Company staff
4 = Odd jobs
5 = Other (Specify) ------------------
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Knowledge
1. How can a person get TB? (allow more than one response)
Through hand shakes |_|
Through the air when a person with TB coughs or |_|
sneezes
Through sharing dishes |_|
Trough eating from same place |_|
Through touching items in public places (door knobs,
handles in transportation, etc.) |_|
Don’t know |_|
Other (Specify) ------- |_|
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Attitude about TB transmission
1. Which statement is closed to your feeling about people with
TB disease? |_|
(Read the following choice and circle one of the answers)
1. Feel compassion and desire to help
2. Feel compassion, but I tend to stay away from these
people
3. It is their problem and I cannot get TB
4. I fear them because they may infect me
5. I have no particular feeling
6. Other (specify) ---------------------
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Alternative way to ask Attitude using Likert Scale
Statement
Strongly
disagree Disagree Neutral Agree
Strongly
agree
1
2
3
4
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Care seeking behavior for TB
1. Do you think you can get TB? |_|
1 = yes (go to Q2) 2 = no (go to Q 3)
2. What would you do if you thought you had symptoms of
TB? (allow more than one answer)
Go to hospital |_|
Go to pharmacy |_|
Go to traditional healer |_|
Pursue other self-treatment options (herbals), etc. |_|
Other (specify) ----------- |_|
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3. Structured observation checklist
• use when research issues of interest are well-established
and can be clearly specified
• researcher directly observes some phenomenon at a given
moment in time
• use detailed structured observation checklist
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Items Observed Reported
not seen
Not
available
Clean running water (piped,
bucket with tap, or pour
pitcher)
1 2 3
Hand washing soap / liquid
soap 1 2 3
Sharp container (safety box) 1 2 3
Example of Structured observation check list
Please tell me if the following resources / supplies used for infection
control are available in general outpatient area of this facility today.
(Ask to see the items)
Source: Nation-wide Service Availability and Readiness Assessment (SARA),
Myanmar, 2015 29
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Questionnaire design
• ask only questions relevant for your research
• avoid duplications
• clear instructions what the respondent needs to do
(e.g. circle, underline, write)
• exclude leading questions
• do not include two questions in one
• do not split the question and the answer on 2 pages
• do not use professional jargon
• in close ended questions, wherever possible, offer an open-
ended answer
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Contd. Questionnaire design
• follow some logical order
(Introduction – socio-demographic data, K, A, P, etc.
divide sections by sub-headings)
– start with the most straightforward questions
– the least sensitive questions at the beginning
– more difficult towards the middle part
– finish the questionnaire with easy questions
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Coding
• think about coding for data entry process when designing
questionnaire
• can assign numbers to close-ended answers
• list of codes to be prepared for open-ended questions
following the completion of interviewing of all study
participants
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Choosing the appropriate data collection tool
Depends on
• Objective of study
• Study participants
patients, community, health providers, etc.
• Education level
literate or illiterate
• Required types of information
sensitive or common / mutual information
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Pretesting the questionnaire
• done with sample from the group with same characteristics
of main study population
• discuss with the group their responses
• is each question measuring what is intended
• the understanding of wording
• the understanding of instructions
• comprehensiveness of close-ended answers
• comprehensiveness of the questionnaire
• layout of the questionnaire
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Quantitative data collection techniques
or methods Data collection tools
Using available information
Checklist, Data
compilation forms
Interviewing
(FTFI , Telephone)
Questionnaire
Administering written
Questionnaires
(SAQ, Mailing, Online)
Questionnaire
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Quantitative data collection techniques
or methods Data collection tools
Structured Observation
Eyes and other senses,
Pen/paper, Checklist, Watch,
Scales, Camera, Video,
Microscope, etc.
Clinical measurement
(BP, weight, Height,
etc. )
Eyes and other senses,
Pen/paper, Checklist, Scales,
etc.
Investigation
(X-ray, CT scan, USG,
etc.)
Instruments Eyes and other
senses, Pen/paper, Checklist,
Watch, Scales,
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Type of research questions
Qn. data collection methods
Qn. data collection tools
Events or patterns of cultural behaviour of treatment seeking for a child
FTFI Structured observation
Eyes, pen and paper, questionnaire, guideline, Observation checklist, camera
Knowledge of particular illness
FTFI
Eyes, pen and paper, questionnaire
Examples
Research questions and their corresponding Quantitative
data collection methods and tools
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Summary
Steps in designing a questionnaire / proforma
1. Think for objectives and variables
2. Decide the main section
3. Write out the questions
4. Sequencing the questions
5. Arrange compose a draft
6. Take out any questions that are not essential
7. Pre test All necessary data collection tools (Questionnaire,
Checklist, Instruments) before conducting the main survey
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Thank you
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