Table 3.

Normality test results from reverse experiments

Direction	Dependent variable	Catheter $[$units$]$${}^{\text{a})}$	Flowrate $[$ml/h$]$	Kolmogorov-Smirnov${}^{\text{a}}$			Shapiro-Wilk
				Statistics	df	Sig.	Statistics	df	Sig.
Reverse	Period	T1.5	20	0.318	6	0.057	0.737	6	0.015
			40	0.374	9	0.001	0.676	9	0.001
			60	0.409	15	0.001	0.569	15	0.001
		T2.0	20	0.351	19	0.001	0.513	19	0.001
			40	0.204	12	0.182	0.933	12	0.415
			60	0.298	17	0.001	0.753	17	0.001
	Pressure	T1.5	20	0.207	11	0.200${}^{\ast }$	0.838	11	0.029
			40	0.144	19	0.200${}^{\ast }$	0.923	19	0.131
			60	0.209	22	0.014	0.845	22	0.003
		T2.0	20	0.105	25	0.200${}^{\ast }$	0.971	25	0.662
			40	0.173	17	0.187	0.934	17	0.254
			60	0.158	24	0.123	0.944	24	0.199

${}^{\ast )}$A lower bound of the true significance; ${}^{\text{a})}$Lilliefors significance correction.