Table 4

Correlation of test behaviour features with number of missing values due to behavioural disturbances, global deterioration scale, duration of disease and age

	Number of missing values	Global deterioration scale	Duration of disease	Age
Loss of insight into performance	0.49^4-160	0.46^4-150	−0.06	−0.28
Distractibility	0.43^4-150	0.50^4-160	0.09	−0.08
Loss of mental effort	0.40^4-150	0.46^4-150	−0.35	−0.11
Impulsivity	0.21	0.38^4-150	0.24	−0.22
Loss of initiative	0.29	0.31	−0.09	−0.21
Inability to correct	0.58^4-160	0.75^4-160	−0.10	−0.24
Perseverative behaviour	0.65^4-160	0.75^4-160	−0.07	−0.16
Increased associativity	0.45^4-150	0.37	−0.05	−0.35
Loss of compliance	0.39^4-150	0.53^4-160	0.36^4-150	−0.03
Restlessness	0.51^4-160	0.58^4-160	−0.07	−0.25
Disturbed mental speed	0.44^4-150	0.26	−0.20	0.22
Response rigidity	0.19	0.18	−0.09	0.14
Stereotypy of behaviour	0.48^4-160	0.35	−0.16	−0.31
Stimulus boundedness	0.69^4-160	0.52^4-160	−0.11	−0.27
Test behaviour scale	0.70^4-160	0.77^4-160	−0.05	−0.22
Global deterioration scale	0.77^4-160	10.00	0.14	−0.06

↵4-150 Correlation is significant at the 0.05 level (2 tailed);
↵4-160 Correlation is significant at the 0.01 level (2 tailed)