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Table 3 Results from multivariate regression for mean total 1-year medical costs

From: Economic burden of illness of acute coronary syndromes: medical and productivity costs

Variables Cost Ratio 95% CI p-value
Age Groups
   Age 45-54 (vs. ≤44 years) 1.109 1.029 - 1.195 0.006
   Age 55+ (vs. ≤44 years) 1.187 1.109 - 1.269 < 0.0001
Gender
   Female 0.906 0.869 - 0.945 < 0.0001
Plan Type
   Comprehensive (vs. HMO) 1.084 1.018 - 1.155 0.01
   PPO (vs. HMO) 1.246 1.179 - 1.318 < 0.0001
   POS (vs. HMO) 1.116 1.040 - 1.198 0.002
Charlson score = 1 (vs. Charlson score = 0) 1.133 1.092 - 1.176 < 0.0001
Charlson score > 1 (vs. Charlson score = 0) 1.311 1.237 - 1.389 < 0.0001
MI listed as the primary diagnosis 1.351 1.302 - 1.402 < 0.0001
CABG (vs. MM) 2.693 2.519 - 2.879 < 0.0001
PCI (vs. MM) 1.595 1.521 - 1.674 < 0.0001
Prior 1-year health care costs 1.000 1.000 - 1.000 < 0.0001
  1. CABG = coronary artery bypass graft; CI = confidence interval; HMO = health maintenance organization; MI = myocardial infarction; MM = medical management; PCI = percutaneous coronary intervention; POS = point of service; PPO = preferred provider organization.