MPH 606 – RESEARCH PROCESS, DESIGNS, HUMAN SUBJECTS PROTECTION
Week 4 Written Assignments–SPSS and Descriptive Analysis
Question:
First,
identify which variables you will analyze for your study. Choose an
outcome variable (disease or disorder) and at least one risk factor.
Then choose other appropriate variables that are related to your outcome
or exposure variables (e.g. for diabetes and obesity, also look at
family history and blood glucose levels). Also, use ALL demographic
variables in your analysis (gender, race, age, salary, education).
Next, in SPSS, run frequency distributions
for each of the variables you think you will be using in the analysis
to answer your research question (e.g., all potential variables for
obesity and diabetes, all relevant measures of exercise, demographic
variables like gender and age group). If the variable is continuous,
also run descriptive statistics including the mean, standard deviation, etc. For categorical variables, also run the appropriate graph.
For
variables that have very small frequencies in at least one category
(e.g., less than 7 people in a category), think about combining that
category with another if it makes conceptual sense (i.e., there are very
few Native Americans, does it make sense to combine them with the Asian
group?). See the instructions for recoding variables.
Try the recode, give the recoded variable a new name, run a frequency of
the new variable (it will be on the bottom of the list of variables),
and SAVE THE DATA FILE. IF YOU RECODE OR CREATE NEW VARIABLES, YOU MUST SAVE YOUR DATA FILE TO KEEP THE NEW VARIABLES.
Optional:
For the daring and possibly experienced, try creating an additive scale
if it makes sense for your research question. Look at the frequency
distributions of each variable that will be added to make the scale.
Recode as needed-try to have the same number of categories, reorder the
categories so that they all go in the same conceptual direction (low to
high, bad to good, infrequent to frequent, etc.). Use the COMPUTE
command and add the variables to make a new scale. Run a frequency
distribution of the scale and appropriate descriptive of the scale.
Cut and paste the SPSS output to a word document. Include the frequency distributions (original and recoded if appropriate), graphs, and possibly descriptive statistics.
For each distribution, graph, or statistic presented, summarize in
words what the data means (i.e., the sample is predominately female with
70% women.) Summaries can be accomplished in a sentence or two, type
the summary below the SPSS result.
| Task | Points Available | Points Awarded |
| Correctly ran the frequency distributions Use SPSS Additional reports run if necessary Descriptive statistics Graph Data files saved as necessary | 0-1 | |
| Completed the category combinations where appropriate and sound Examine and transform variables into analyzable units | 0-2 | |
| Summarized the data Described the data clearly and succinctly | 0-2 | |
| Total | 0-5 | |
| Less points for spelling, grammar, punctuation and citation errors | ||
| Less points for late/incomplete work | ||
| New Total | 0-5 |
Word Count: 750–850 words with at least 3 References
Please consider the following when writing the above written assignment
1. There should be a separated cover sheet
2. Each essay should begin with an abstract (short paragraph)
3. There should be a running header
4. Lower Turnitin %, plagiarism and similarity index.
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