Health Promotion Programs

Question # 00020830 Posted By: augorji Updated on: 07/25/2014 10:27 PM Due on: 07/06/2014
Subject Health Care Topic Epidemiology Tutorials:
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PUBH 6235

Week 8: Study Design/Internal Validity

Please respond to the following questions either by writing the design name or by describing the design using standard notation (X = program, O=observation, R= random assignment). For each design, please discuss all threats to internal validity.

1. a. Design: Single group post-test only

b. Internal validity threats:

2. a. Design: (R) O1 X O2

(R) O1 O2

b. Internal validity threats:

3. a. Design: Pretest-posttest design with experimental and comparison group

b. Internal validity threats:

4. a. Design: O X O

b. Internal validity threats:



5. a. Design: Single group with three pretests and four posttests

b. Internal validity threats:

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  1. Tutorial # 00020364 Posted By: neil2103 Posted on: 07/27/2014 10:03 AM
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