EPID404_Homework1_20230313 (4)

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University of Illinois, Chicago *

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Statistics

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Feb 20, 2024

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EPID 404 Homework #1 Access the following files which can be found in DATASETS > MEDICARE CLAIMS on Blackboard: BeneSum_IL2008.sas7bdat– the SAS dataset DE-SynPUF_Codebook.pdf – the codebook (see pp 4-5, 10-42 for Bene Summary) DE-SynPUF_DataUseAgreement_Disclaimer.pdf The purpose of this descriptive analysis is to describe the prevalence of multiple chronic conditions in 2008 among Medicare beneficiaries aged 65 and older in Illinois, overall and by demographic factors. The dataset provided to you is the beneficiary summary file from the Medicare claims DE- SynPUF, restricted to Illinois Medicare beneficiaries age 65 and older as of January 1, 2008, who were continuously enrolled in 2008 for at least 11 months. Address the following questions and format numeric results for each question in a fully titled and labeled table, if appropriate, with interpretive text directly below. Please make sure each result is labeled with the relevant question number. Please cut and paste relevant SAS code snippets with each question. PLEASE DO NOT TURN IN ANY SAS OUTPUT and limit your entire submission to 10 pages. Start by running a PROC CONTENTS and select PROC FREQ statements for variables of interest to get familiar with the dataset. 1. Create a variable for multiple chronic conditions (yes=1 no=0), defined as two or more of the following conditions (with variable names in parentheses following each): a. Acute myocardial infarction (SP_ISCHMCHT) b. Alzheimer’s disease and related disorders or senile dementia (SP_ALZHDMTA) c. Chronic kidney disease (SP_CHRNKIDN) d. Chronic obstructive pulmonary disease (SP_COPD) e. Depression (SP_DEPRESSN) f. Heart failure (SP_CHF) g. Stroke and transient ischemic attack (SP_STRKETIA) Report the prevalence of having multiple chronic conditions among Medicare recipients age 65 and older in Illinois in 2008. 2. Report the prevalence of having multiple chronic conditions by sex. Run the appropriate statistical test to report the p-value for the relationship between sex and multiple chronic conditions. 3. Report the prevalence of having multiple chronic conditions by race/ethnicity. Run the appropriate statistical test to report the p-value for the relationship between race/ethnicity and multiple chronic conditions. 1

4. Create a variable for age as of January 1, 2008. Describe the distribution of age in the sample. 5. Categorize age into five-year age groups and describe the shape of the relationship between this categorized age variable and having multiple chronic conditions. Report results from the appropriate statistical test for the association between age as an ordinal variable and the dichotomous multiple chronic conditions variable. ( Note: Use if-then-else statements to appropriately create mutually exclusive groups that contain all valid values of age. ) 6. Write a PROC FORMAT with formats for the values of all categorical variables used in this assignment. Write the corresponding "format" statement in the data step. An example is provided below: proc format ; value ynf 1 = ' yes' 0 = 'no' ; run ; *And then in the data step; format MCC ynf. ; 2

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