qualitative and quantitative methods of research
TRANSCRIPT
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Jordan Albert J. Cruz, RN
Qualitative and Quantitative Methods of
Research
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Purpose
Quali: To understand & interpret social interactions.
Quanti: To test hypotheses, look at cause & effect, & make predictions.
Qualitative versus Quantitative
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Group Studied
Quali: Smaller & not randomly selected.
Quanti: Larger & randomly selected.
Qualitative versus Quantitative
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Variables
Quali: Study of the whole, not variables.
Quanti: Specific variables studied
Qualitative versus Quantitative
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Type of Data Collected
Quali: Words, images, or objects.
Quanti: Numbers and statistics.
Qualitative versus Quantitative
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Forms of Data Collected
Quali: Qualitative data such as open - ended responses, interviews, participant observations, field notes, & reflections.
Quanti: Quantitative data based on precise measurements using structured &
validated data-collection instruments.
Qualitative versus Quantitative
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Role of the Researcher
Quali: Researcher & their biases may be known to participants in the study, & participant
characteristics may be known to the researcher.
Quanti: Researcher & their biases are not known to participants in the study, & participant
characteristics are deliberately hidden from the researcher (double blind studies).
Qualitative versus Quantitative
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Results
Quali: Particular or specialized findings that is less generalizable.
Quanti: Generalizable findings that can be applied to other populations.
Qualitative versus Quantitative
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Scientific Method
Quali: Study of the whole, not variables.
Quanti: Specific variables studied
Qualitative versus Quantitative
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Final Report
Quali: Narrative report with contextual description & direct quotations from
research participants.
Quanti: Statistical report with correlations, comparisons of means, &
statistical significance of findings.
Qualitative versus Quantitative
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What is to be observed?
Quali: ¤ Qualities ¤ Behavior ¤ Complexities
Quanti: ¤ Quantities ¤ Scales ¤ Trends
Qualitative versus Quantitative
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What are the type of questions asked?
Quali: ¤ Why? ¤ How?
Quanti: ¤ How many ¤ What
Qualitative versus Quantitative
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How are the questions are put (methods)?
Quali: ¤ Document review ¤ Participant observations ¤ Interviews ¤ Focus
group ¤ Workshops
Quanti: ¤ Application forms ¤ Questionnaires ¤ IQ Tests ¤
Measurements
Qualitative versus Quantitative
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How the results are interpreted (analysis)?
Quali: ¤ Explore, explain, understand ¤ Narrative ¤ Particular ¤ Mainly inductive reasoning:
conclusions can be drawn from the evidence no matter how incomplete
Quanti: ¤ Describe, measure, predict ¤ Statistical tables and chart ¤ Universal ¤ Mainly deductive
reasoning: everything is known before conclusions can be drawn
Qualitative versus Quantitative
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Major Classes of Quantitative and Qualitative Research
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Experimental Studies
Researchers actively introduce an intervention or treatment Designed to test causal relationships Greater control over extraneous variables
Quantitative Research
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Non-Experimental Studies
Researchers collects data without making changes or introducing treatments Lesser control over extraneous variables
Quantitative Research
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The effects of a submaximal exercise protocol, in comparison with a near-maximal voluntary contraction protocol, on continence control and muscle contraction strength among women with genuine stress urinary incontinence.
Examples:
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Factors that contributed to hospital readmission in a HongKong hospital. A readmitted group was compared with a non readmitted group of patients in terms of demographic characteristics and health conditions upon admission.
Examples:
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Rooted in research traditions that originate in the disciplines of anthropology, sociology, and psychology.
Qualitative Research
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Grounded Theory Study
Roots in sociology Seeks to describe and understand the key social psychological and structural processes that occur in a social setting Focus developing social experience
Qualitative Research
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Component discovery of a core variable that is central in explaining what is going on in that social scene
Generate comprehensive explanations of phenomena that are grounded in reality
Example:A study to explain the material process
of managing late stages of breastfeeding and weaning the child from the breast
Qualitative Research
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Phenomenology Roots in both philosophy and psychology Concerned with the lived experiences of humans Approach to thinking about what life experiences of people are like and what they mean What is the essence of this phenomenon as experienced by these people?
Qualitative Research
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Example:
A study to illuminate the lived experiences of care providers who were highly skilled communicators in their relationships with patients with stroke and aphasia.
Qualitative Research
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EthnographyPrimary research tradition within anthropologyProvides a framework for studying the meanings, patterns, and experiences of a defined cultural group in a holistic fashionEngaged in extensive fieldwork, often participating to the extent possible in the life of the culture under study
Qualitative Research
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Broadly defined culture Haitian refugee communities Narrowly defined culture The Culture of Emergency Departments Aim to learn from (rather than to study) members of a cultural group, to understand their world view as they perceive and live it
Qualitative Research
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Example: An analysis of a nursing home residence, focusing on the ethical issues of daily living affecting nursing home residents with dementia
Qualitative Research
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Researchers move from beginning point of a study (the posing of a question) to the end point (the obtaining of an answer) in a linear sequence of steps
Major Steps in Quantitative Research
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Phase 1: The Conceptual Phase
Activities include reading, conceptualizing, theorizing, reconceptualising and reviewing ideas with colleagues or advisers Skills include creativity, deductive reasoning, insight, and a firm grounding in previous research on the topic of interest
Major Steps in Quantitative Research
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Step 1. Formulating and Delimiting the Problem Step 2. Reviewing the Related Literature Step 3. Undertaking Clinical Fieldwork Step 4. Defining the Framework and Developing Conceptual Definitions Step 5. Formulating Hypothesis
Major Steps in Quantitative Research
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Phase 2: The Design and Planning Phase
The methods and procedures to be used to address the research question and plan for the actual collection of data
Major Steps in Quantitative Research
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Step 6. Selecting a Research Design Step 7. Developing Protocols for the Intervention Step 8. Identifying the Population to be Studied Step 9. Designing the Sampling Plan
Major Steps in Quantitative Research
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Step 10. Specifying methods to Measure the Research the Research Variables Step 11. Developing Methods for a Safeguarding Human/Animal Rights Step 12. Finalizing and Reviewing the Research Plan
Major Steps in Quantitative Research
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Phase 3: The Empirical Phase
Involves collecting research data and preparing those data for analysis
Major Steps in Quantitative Research
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Step 13. Collecting the Data Step 14. Preparing the Data for Analysis
Major Steps in Quantitative Research
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Phase 4. The Analytic Phase
Analysis and interpretation of data
Major Steps in Quantitative Research
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Step 15. Analyzing the Data Step 16. Interpreting the Results
Major Steps in Quantitative Research
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Phase 5: The Dissemination Phase
Major Steps in Quantitative Research
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Step 17. Communicating the Findings Step 18. Utilizing the Findings in Practice
Major Steps in Quantitative Research
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Begin with a broad question regarding the phenomenon of interest, often focusing on a little studied aspect More flexible and less linear
Activities in Qualitative Research
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Conceptualizing and Planning a Qualitative Study
Identifying the Research Problem Doing Literature Reviews Selecting and Gaining Entree Into Research Sites Research Designs in Qualitative Studies
Activities in Qualitative Research
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Conducting the Qualitative Study Once in the field, researchers select informants collect data, and then analyze and interpret them in an iterative fashion; Field experiences help in an ongoing fashion to shape the design of the study Early analysis leads to refinements in sampling and data collection, until saturation (redundancy of information) is achieved
Activities in Qualitative Research
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Disseminating Qualitative Findings Used to shape the direction of further studies (including more highly controlled quantitative studies) Guide the development of structured measuring tools for clinical and research purposes Shape the researcher’s perceptions of a problem or situation and their conceptualizations of potential solutions
Activities in Qualitative Research
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