IHP 525 Module Two Problem Set 1.
Five-City Project.
The Stanford Five-City Project is a comprehensive community health education study of five moderately sized Northern California towns. Multiple-risk factor intervention strategies were randomly applied to two of the communities. The other three cities served as controls. Outline the design of this study in schematic form.
2.
Employee counseling.
An employer offers its employees a program that will provide up to four free psychological counseling sessions per calendar year. To evaluate satisfaction with this service, the counseling office mails questionnaires to every 10th employee who used the benefit in the prior year. There were 1000 employees who used the benefit. Therefore, 100 surveys were sent out. However, only
25 of the potential respondents completed and returned their questionnaire. a)
Describe the population for the study.
The population of the study would be the 1000 employees who used the benefits the prior
year.
b)
Describe the sample.
The sample size would be those who completed and returned the survey, thus being 25. c)
What concern is raised by the fact that only 25 of the 100 questionnaires were completed and returned?
The lack of response can create a lack of data results when trying to prove a certain hypothesis. Problems retrieved from Gerstman, B. B. (2015). Basic biostatistics: Statistics for public health practice
(2nd ed.). Burlington, MA: Jones and Bartlett. ISBN: 978-1-284-03601-5
Group 1
2 cities-n1
Group 2
3 cities =n2
Random Assignments Treatment 2
No special interventions
Compare
Outcomes
Treatment option 1 Special intervention
