Table 3.

Concurrent validity of the VPIT with the NHPT and the BBT

Concurrent validity parameters	Spearman’s rank correlation coefficient
mean of 3 trials	All patients	Subgroup 1: without support	Subgroup 2: with support
	(n = 31)	(n = 11)	(n = 20)
Tex [s] VPIT /	0.31	0.57	0.35
Tex [s] NHPT	0.09*	0.07*	0.13*
Tex [s] VPIT /	0.30	0.61	0.32
Tex [s] NHPT(TP1)	0.10*	0.47*	0.16*
Tex [s] VPIT /	−0.23	−0.41	−0.21
Ntc BBT	0.22*	0.22*	0.37*
Ndp VPIT /	0.21	−0.18	0.17
Ndp NHPT	0.26*	0.60*	0.49*
Ndp VPIT /	−0.12	−0.18	−0.16
Ndc BBT	0.51*	0.60*	0.51*

*p-values: level of significance: p ≤ 0.05

T _ex [s] execution time in seconds, VPIT Virtual Peg Insertion Test, NHPT Nine Hole Peg Test, TP1 time point 1 (time stopped at the point when all 9 pegs were put in the 9 holes (without replacing them in the dish)), BBT Box and Block Test, N _tc number of transported cubes, N _dp number of dropped pegs, N _dc number of dropped cubes, SD Standard Deviation