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Table 4 Comparison of absolute mean error of CTREE and CART algorithms for different cost sectors

From: Effects of multiple chronic conditions on health care costs: an analysis based on an advanced tree-based regression model

Cost sector Mean absolute error
Total costs 3,690.87 3,611.64
Outpatient care 284.09 293.39
Inpatient care 1,761.90 1,709.78
Medication 2,012.37 1,919.07
Nursing care 388.12 398.37
  1. CART = classification and regression tree; CTREE = conditional inference tree.