TABLE 5.

Confusion matrix of breathing classification based on stability and posture variables. States of abdominal and pulmonary breathing were classified starting from, respectively, stability information based on the analysis of the COP displacement, and postural data obtained using stereophotogrammetric tools.

			Predicted stability			Predicted posture
			Breathing		Percentage correct	Breathing		Percentage correct
			Abdominal	Pulmonary		Abdominal	Pulmonary
Observed	Breathing	Abdominal	14	6	70.0	17	3	85
		Pulmonary	5	21	80.8	4	21	84
	Overall Percentage				76.1			84.4