Table 5.

Regression Analysis of Age, Gender, and Composite Pain Index (CPI) Components as Predictors of Acute Care Utilization Events

Time	Variable	Estimate	Std Error	z value	P-value
Visit 1	Age	−0.019	0.008	−2.208	0.029
	Gender	0.011	0.189	0.056	0.955
	Pain Intensity	0.134	0.034	3.981	<0.001
	Number of Sites	0.008	0.037	0.227	0.821
	Pattern	0.088	0.065	1.350	0.179
	PRI-T	0.003	0.007	0.457	0.648
Visit 2	Age	−0.017	0.008	−2.026	0.045
	Gender	−0.043	0.189	−0.227	0.824
	Pain Intensity	0.108	0.035	3.802	0.003
	Number of Sites	0.034	0.031	1.103	0.272
	Pattern	0.040	0.059	0.679	0.499
	PRI-T	−0.004	0.007	−0.501	0.618