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Table 1 Explanatory variables used in the multivariate analysis

From: Inequality in treatment use among elderly patients with acute myocardial infarction: USA, Belgium and Quebec

VARIABLE DEFINITION
Patient-related clinical indicators  
FEMALE Dummy variable taking the value '1' for female patients
AGEGRP0-AGEGRP5 One dummy variable for each age group (where AGEGRP0 includes patients aged 65–69 and AGEGRP5 patients older than 90)
YR93-YR98 One dummy variable for each year
DIST_CATH Distance from the patient's area geographical center to the area geographical center of the nearest hospital offering cardiac CATH.
DIST_CARD Distance from the patient's area geographical center to the area geographical center of the nearest hospital offering CABG or PCI.
COCHF Congestive heart failure
CARD Cardiac dysrhythmias
PULED Pulmonary edema
SHOCK Shock
CRF Chronic renal failure
ARF Acute renal failure
DIABET Diabetes
MAL Malignancy
CERVAS Cerebrovascular disease
Area-based socioeconomic indicators  
INC Median family income in ZIP code area of residence.
INC_Q1 The patient's area belongs to the lowest median income quintile in country X
INC_Q2 The patient's area belongs to the 2nd median income quintile in country X
INC_Q3 The patient's area belongs to the 3rd median income quintile in country X
INC_Q4 The patient's area belongs to the 4th median income quintile in country X
INC_Q5 The patient's area belongs to the highest median income quintile in country X