Table 3.

Multivariable hierarchical multiple regression analyses predicting suicidal ideation

Variable	R2	Adjusted R2	R2 change	F change	β	t
Step 1	0.05	0.04	0.05	4.31*
IC symptom index					0.11	0.77
IC problem index					0.14	0.96
Step 2	0.09	0.08	0.04	6.49*
IC symptom index					0.06	0.44
IC problem index					0.05	0.38
Pain					0.23*	2.55
Step 3	0.41	0.39	0.32	40.32**
IC symptom index					0.05	0.45
IC problem index					−0.05	−0.45
Pain					0.01	0.08
Catastrophizing					−0.09	−1.05
Depression					0.69**	8.20

^*p<0.05;

^**p<0.01.

IC: interstitial cystitis.