Transcript Perception of Overweight Among African American High

The Jackson Heart Study— Graduate Training and
Education Center- Daniel Hale Williams Scholar
Program
Orientation and Research Camp- April 14-17, 2014
Research Design
Clifton C. Addison, Ph.D.,
Jackson Heart Study, Jackson,
Mississippi
Beginning with Statistics
What is statistics?
 Sample—representative of
population
 Population—target group of
interest
Two Types of Statistics
Descriptive Statistics
Characteristics of Groups (frequency/percentage,
means, standard deviations)
Inferential Statistics
Exploring how variables relate to each other
Hypothesis Testing
 Any research study---answer
questions
 Differences—groups on variables
 Relationship, association,
correlation--variables
 Hypothesis of difference
 Hypothesis of association
Example of Descriptive Statistics--Diabetes
Numbers Per 100,000
Related Deaths In Mississippi
100
90
80
70
60
50
40
30
20
10
0
African American
Mississippi
1995
1996
1997
Year
1998
Example of Inferential Statistics---
ANOVA Table
Types of Research Designs
 Quantitative – numbers, measurement—
measurement of quantity or amount—using
numbers to measure performance, behaviors,
attitudes, status etc.
 Qualitative—human behaviors and habits-observation- exploring a subject in depth, generate
ideas---seeks to understand social phenomena from
the viewpoints of those being studied.
Quantitative Design
 Descriptive—Characteristics
 Correlation—relationship, association
 Post facto/causal comparative-cause-effect
 Experimental—cause-effect, manipulation
Quasi-experimental—cause-effect-no
manipulation
Qualitative Design
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Focus Groups
Case Studies
Historical Studies
Ethnographical Studies
Phenomenological Studies
-interviews, survey designs
- not dependent upon sample size, unique, and not
easily replicated
Deciding Between Quantitative and
Qualitative
 Based on aims and objectives---within the
research question/hypothesis
Components of the Research
Design Section
Sample—procedure for
selecting group-- recruitment
of participants
Instrument– means of data
collection-- conducting
clinical examinations-Conducting survey interviews
with participants
Statistical Analysis—test
(process) for examining the
data
Questions??
 Thank You!!