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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
CTREE CART
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.