Table 5.

Number of patients, out of 26, with significant linear and nonlinear interactions for each sampling frequency and lag.

	$\mathit{RESP}=\mathit{NAS}$				$\mathit{RESP}=\mathit{THO}$
	2 Hz		4 Hz		2 Hz		4 Hz
$\mathit{\tau }$ (seconds)	Linear	Nonlinear	Linear	Nonlinear	Linear	Nonlinear	Linear	Nonlinear
1	13	9	19	14	20	12	19	18
2	16	7	11	10	17	8	14	18
3	10	10	11	11	15	12	13	15
4	11	12	13	12	8	10	13	13
5	13	10	12	12	14	8	15	13