Covariates Used in the Case Mix Adjustment of PCS and MCS Scores

Covariates Used in the Case Mix Adjustment of PCS and MCS Scores
MODELS
TWO

DEMOGRAPHICS COVARIATES

ONE

Age (Integer)
Gender (Male or Female)
CMS Race (Black, Other Minority)
Education
Marital Status
Annual Household Income

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THREE
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CHRONIC MEDICAL CONDITIONS
Hypertension or high blood pressure
Angina pectoris or coronary artery disease
Congestive heart failure
Myocardial infarction or heart attack
Other heart conditions, such as problems with heart valves or
arrhythmias
Stroke
Emphysema, or asthma, or COPD (Chronic Obstructive Pulmonary
Disease)
Crohn’s disease, ulcerative colitis, or inflammatory bowel disease
Arthritis of the hip or knee
Arthritis of the hand or wrist
Osteoporosis
Sciatica
Diabetes, high blood sugar, or sugar in the urine
Depression
Any cancer (other than skin cancer)

HOS STUDY DESIGN VARIABLES
Who Completed Survey (Self or Other)
CMS Region
Survey Vendor

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Note: Model One included all covariates listed in the table and was used for beneficiaries with completed data for all of
the covariates. Model Two was used for beneficiaries with completed data for all of the covariates except annual
household income. Model Three was limited to age, gender, race, CMS Region, and survey vendor, and was used for
beneficiaries who did not have enough completed data for Model One or Model Two. The variables included in Model
Three were available for all participating beneficiaries.