Table 2.

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.
Forward	Period	T1.5	20	0.240	30	0.001	0.822	30	0.001
			40	0.266	30	0.001	0.820	30	0.001
			60	0.154	42	0.014	0.883	42	0.001
			80	0.169	37	0.009	0.833	37	0.001
			100	0.225	33	0.001	0.762	33	0.001
		T2.0	20	0.153	18	0.200${}^{\ast }$	0.917	18	0.115
			40	0.083	17	0.200${}^{\ast }$	0.981	17	0.969
			60	0.171	25	0.056	0.935	25	0.116
			80	0.211	17	0.043	0.926	17	0.189
			100	0.181	36	0.004	0.889	36	0.002
	Pressure	T1.5	20	0.199	20	0.036	0.875	20	0.014
			40	0.272	29	0.001	0.863	29	0.001
			60	0.223	56	0.001	0.907	56	0.001
			80	0.177	49	0.001	0.911	49	0.001
			100	0.124	58	0.027	0.964	58	0.079
		T2.0	20	0.158	20	0.200${}^{\ast }$	0.925	20	0.124
			40	0.170	14	0.200${}^{\ast }$	0.914	14	0.177
			60	0.280	23	0.001	0.724	23	0.001
			80	0.279	37	0.001	0.818	37	0.001
			100	0.111	40	0.200${}^{\ast }$	0.947	40	0.060

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