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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.