Clinical Study

The Interactive Relationship between Pain, Psychosis, and Agitation in People with Dementia: Results from a Cluster-Randomised Clinical Trial

Table 2

Efficacy of treating pain on psychosis and agitation.

Baseline8 weeks
Control (n = 177)Intervention (n = 175)Control (n = 157)Intervention (n = 146)p change

NPI total score31.4 (21.4)34.8 (21.9)0.13226.6 (20.1)18.9 (17.5)<0.001<0.001
Psychosis cluster4.8 (5.8)6.1 (6.9)0.0873.7 (4.9)3.9 (5.5)0.6820.091
Delusion2.6 (3.8)3.6 (4.3)0.0302.0 (3.1)2.0 (3.2)0.8130.052
Hallucination1.5 (2.9)1.8 (3.2)0.4271.1 (2.3)1.4 (2.7)0.4050.832
Euphoria0.7 (2.0)0.8 (2.2)0.8870.6 (1.9)0.5 (1.8)0.1230.507
Agitation cluster13.4 (10.9)14.8 (10.9)0.15511.3 (10.9)7.8 (8.3)0.007<0.001
Agitation/aggression3.7 (3.9)4.2 (4.3)0.3733.4 (3.8)2.1 (3.1)0.0010.001
Disinhibition3.0 (4.0)2.9 (3.8)0.9222.6 (3.9)1.7 (3.0)0.0610.293
Irritability3.7 (3.7)4.2 (4.1)0.3383.0 (3.4)2.3 (3.1)0.0920.093
Abb. motor behaviour3.0 (4.5)3.5 (4.7)0.3282.4 (3.7)1.7 (3.6)0.0520.017

Calculated by analyzing the difference between the intervention group and control group at each measurement point using the Mann-Whitney test.
Calculated by analyzing the difference in change of NPI-NH score in the intervention group versus the control group from baseline to Week 8 using the Mann-Whitney U test.