Table 1 List of Variables entered into the Propensity Model and their Description
Variable | Measure | Source |
|---|---|---|
Outcomes and Exposures | ||
Physician Visits | Continuous | PHRU physician services database |
Hospitalizations | Continuous | PHRU hospitalization database |
Coronary Re-vascularizaton | Continuous | ICONS (Inpatient chart) |
Mortality | Yes/No | ICONS (Vital Statistics) |
Demographics | ||
Age | Continuous Categorical: 66-75, 75-80, >80 (by tertiles) | PHRU (Pharmacare database) |
Gender | Male, Female | ICONS (Inpatient chart) |
Region of Province where Patient Resides | Northern, Eastern, Western, Southern | ICONS (Inpatient chart) |
Risk Factors | ||
Total blood cholesterol measured in hospital | Yes/No | ICONS (Inpatient chart) |
LDL cholesterol measured in hospital | Yes/No | ICONS (Inpatient chart) |
HDL cholesterol measured in hospital | Yes/No | ICONS (Inpatient chart) |
Triglycerides measured in hospital | Yes/No | ICONS (Inpatient chart) |
Diabetes | Yes/No | ICONS (Patient reported) |
Hypertension | Yes/No | ICONS (Patient reported) |
Smoking | Past, Current, Never | ICONS (Patient reported) |
Family History of CVD | Yes/No | ICONS (Patient reported) |
Previous PTCA | Yes/No | ICONS (Patient reported) |
Previous CABG | Yes/No | ICONS (Patient reported) |
Previous CHF | Yes/No | ICONS (Patient reported) |
Previous Cardiac Catheterization | Yes/No | ICONS (Patient reported) |
Previous Myocardial Infarction | Yes/No | ICONS (Patient reported) |
Previous stroke | Yes/No | ICONS (Patient reported) |
Previous TIA | Yes/No | ICONS (Patient reported) |
Year of Entry into study | By Quartiles | ICONS (Inpatient chart) |
Number of distinct prescription medications in 6 months pre-hospitalization | Continuous Categorical: <3, 3-<6, 6-<9, ∃ 9 (by quartiles) | PHRU Pharmacare database |
In-hospital clinical data | ||
Discharge diagnosis | UA/AMI | ICONS (Health Records) |
In-hospital procedures (PTCA, CABG, EST, Cardiac catheterization) | Yes/No | ICONS (Inpatient Chart) |
Medications on discharge (ASA, Beta-blockers, CCB, ACE, Fibrates) | Yes/No | ICONS (Inpatient Chart) |