Table 2.

Bivariate correlation of predictors and Agitation Behaviors Index

Predictor Variable	Mean	SD	Min	Max	R	P
Age	79.1	6.0	66	89	0.003	0.98
Gender					0.012	0.19
MMSE	20.0	6.0	0	30	-0.33	0.01
Apnea hypopnea index	19.5	14.9	1.1	67.6	-0.37	0.01
Periodic limb movements index	15.3	19.2	0	72.6	0.18	0.18
Probable restless legs syndrome					0.31	0.01
Outcome Variables
Agitation Behaviors Index	3.0	3.3	0	14.9
Square Root Agitation Behaviors Index	1.5	0.9	0	3.86