Decision Tree of Esteban et al for Stable COPD (COPD-CART)

Description

Esteban et al reported a classification and regression tree (CART) for patients with stable COPD. The authors are from the University of Basque Country and Hospital de GaldakaoUsansolo in Spain.

Patient selection: stable COPD

Outcome: 5-year mortality risk

Parameters:

(1) age in years

(2) FEV1 as percent of predicted

(3) dyspnea severity from 1 to 4 (Fletcher et al, 1 = after vigorous exercise, 4 = at rest or minimal exertion)

(4) past hospitalization for COPD exacerbation

(5) physical activity (very low, low, moderate, high)

For patients >= 75 years

Dyspnea Severity	FEV1	Past Hospital	Physical Activity	Mortality Risk
1 or 2	NA	0 or 1	M or H	12.1%
1 or 2	NA	0 or 1	VL or L	45.2%
1 or 2	NA	>= 2	NA	85.7%
3 or 4	> 49%	NA	NA	52.2%
3 or 4	<= 49%	NA	NA	74.4%

For patients < 75 years

Age	FEV1	Dyspnea	Past Hospital	Physical Activity	Mortality Risk
<55	>= 35%	NA	<= 1	NA	4.4%
55 to 74	> 65%	NA	NA	NA	7.7%
55 to 74	35 to 65%	NA	<= 1	H	10.5%
55 to 74	35 to 65%	NA	<= 1	L or M	16.9%
55 to 74	35 to 65%	NA	<= 1	VL	30.8%
< 75	> 65%	NA	> 1	NA	14.3%
< 75	35-65%	NA	> 1	M or H	27.3%
< 75	35-65%	NA	> 1	VL or L	65%
< 75	< 35%	1 or 2	0	NA	18.2%
< 75	< 35%	1 or 2	>=1	NA	42.9%
< 75	< 35%	3 or 4	NA	NA	60.4%

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Decision Tree of Esteban et al for Stable COPD (COPD-CART)

Description

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