A Machine Learning Approach to the Interpretation of Cardiopulmonary Exercise Tests: Development and Validation

Table 2

Physical characteristics of the study participants.

Study stage	Variable	CHF	COPD	Healthy
Learning stage (113 M, 37 F)	Age (yr)
	Height (cm)
	Weight (kg)
Validation stage (64 M, 20 F)	Age (yr)
	Height (cm)
	Weight (kg)

Data are presented as . CHF: chronic heart failure; COPD: chronic obstructive pulmonary disease; Healthy: healthy normal participants; M: males; F: females.