Covariates Used in the Case Mix Adjustments of PCS and MCS Measures

Attachment_8_Covariates.pdf

Medicare Health Outcomes Survey (HOS) and Supporting Regulations at 42 CFR 422.152

Covariates Used in the Case Mix Adjustments of PCS and MCS Measures

OMB: 0938-0701

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COVARIATES USED IN THE CASE MIX ADJUSTMENT
OF PCS and MCS SCORES
PCS AND MCS MODELS

DEMOGRAPHICS COVARIATES

ONE

TWO

THREE

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

√
√
√
√
√
√

√
√
√
√
√

√
√
√

√
√
√
√

√
√
√
√

√

√

√

√

√

√

√

√

√
√
√
√

√
√
√
√

√
√

√
√

√
√
√
√

√
√
√
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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
Any cancer (other than skin cancer)

HOS STUDY DESIGN VARIABLES
Who Completed Survey (Self or Other)
Mode of Survey Administration (Mail or Telephone)
CMS Region
Survey Vendor

√
√
√

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,
mode of survey administration, 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.


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