BMC Pulmonary Medicine

Table 3 Correlation coefficients between contraction period measured with diaphragmatic length (DL) and contraction period measured with thoracic motion (TM), respiratory airflow (FL) and transdiaphragmatic pressure (DP).

From: Non-Invasive monitoring of diaphragmatic timing by means of surface contact sensors: An experimental study in dogs

	DL vs. TM				DL vs. FL				DL vs. DP
	r	R	p	ρ	r	R	p	ρ	r	R	p	ρ
Dog 1 (SVN)	0.61	-0.44	0.43	0.58	0.12	-0.82	0.71	0.23	0.14	-0.74	0.059	0.15
Dog 2 (SVN)	0.91	0.77	1.00	0.84	0.72	0.73	0.65	0.81	0.90	0.89	0.76	0.87
Dog 3 (SVN)	0.77	0.39	0.68	0.79	0.63	0.45	0.72	0.65	058.	0.56	0.38	0.53
Dog 1 (SVW)	0.62	0.62	0.60	0.64	0.54	0.39	0.42	0.55	0.37	0.23	0.32	0.42
Dog 2 (SVW)	0.69	0.47	0.80	0.66	0.51	0.15	0.74	0.51	0.85	0.69	0.94	0.83
Dog 3 (SVW)	0.60	0.23	0.55	0.58	0.59	0.62	0.71	0.56	0.26	0.24	0.46	0.32
Dog 1 (ILW)	0.99	0.92	0.99	0.99	1.00	0.99	1.00	0.99	1.00	0.98	0.99	0.99
Dog 2 (ILW)	0.97	0.79	1.04	0.96	0.91	0.85	1.31	0.93	0.98	0.97	1.00	0.96
Dog 3 (ILW)	0.98	0.97	0.94	0.98	0.98	0.97	1.01	0.97	0.97	0.86	0.99	0.97

r: Pearson correlation coefficient; R: reliability coefficient; p: slope of the linear regression line; ρ: Spearman's rank-order correlation coefficient; SVN: spontaneous ventilation without anaesthesia respiratory test, SVW: spontaneous ventilation with anaesthesia respiratory test; ILW: inspiratory load with anaesthesia respiratory test.

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ISSN: 1471-2466

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