Table 3.

Discriminative (known group) validity of the ICECAP-A, EQ-5D-3L, and ICIQ-OAB (n = 478)

Variables	Categories	ICECAP-A			EQ-5D			ICIQ-OAB
		Mean (SD)	P value§	P value§§	Mean (SD)	P value§	P value§§	Mean (SD)	P value§	P value§§
Age	<65	0.82 (0.18)	0.12	0.14	0.69 (0.28)	0.18	0.17	9.14 (2.72)	0.53	0.43
	≥65	0.85 (0.15)			0.65 (0.28)			9.31 (2.55)
BMI	Normal	0.85 (0.15)	0.00** ,†	0.01*	0.75 (0.24)	0.00**,††	0.00**	8.86 (2.56)	0.06†	0.09
	Overweight	0.85 (0.15)			0.69 (0.28)			8.99 (2.63)
	Obese	0.80 (0.19)			0.64 (0.30)			9.53 (2.75)
Detrusor overactivity	No	0.85 (0.16)	0.02* ,†	0.07	0.72 (0.26)	0.00**,††	0.00**	8.73 (2.54)	0.00**,††	0.00**
	Yes	0.81 (0.18)			0.63 (0.31)			9.76 (2.73)
Surgery	No	0.83 (0.17)	0.59	0.37	0.69 (0.28)	0.35	0.65	9.13 (2.64)	0.29	0.05
	Yes	0.84 (0.17)			0.66 (0.28)			9.47 (2.85)
Advance prolapse	No	0.83 (0.17)	0.97	0.81	0.69 (0.29)	0.16	0.18	9.32 (2.64)	0.06†	0.02*
	Yes	0.83 (0.18)			0.65 (0.30)			8.79 (2.70)
Voiding difficulty	No	0.83 (0.16)	0.92	0.96	0.69 (0.27)	0.55	0.69	9.06 (2.69)	0.28	0.13
	Yes	0.83 (0.18)			0.68 (0.30)			9.33 (2.63)
Bother—frequency of urination (day)	≤5	0.87 (0.13)	0.00** ,††	0.01*	0.74 (0.20)	0.03*	0.07	6.86 (2.16)	0.00**,††	0.00**
	>5	0.82 (0.19)			0.67 (0.30)			9.77 (2.47)
Bother—frequency of urination (night)	≤5	0.87 (0.13)	0.00** ,†	0.02*	0.73 (0.23)	0.02*	0.10	7.44 (2.21)	0.00**,††	0.00**
	>5	0.81 (0.18)			0.67 (0.30)			9.85 (2.53)
Bother—frequency of rush	≤5	0.87 (0.14)	0.06 †	0.14	0.73 (0.22)	0.19	0.29	7.00 (2.37)	0.00**,††	0.00**
	>5	0.82 (0.17)			0.68 (0.29)			9.52 (2.56)
Bother—frequency of leaking	≤5	0.88 (0.13)	0.00** ,††	0.04*	0.74 (0.25)	0.10	0.31	7.20 (2.36)	0.00**,††	0.00**
	>5	0.82 (0.18)			0.68 (0.29)			9.54 (2.57)
Total impact of symptoms	Low	0.86 (0.14)	0.00** ,††	0.01**	0.75 (0.19)	0.15	0.27	6.31 (2.17)	0.00**,††	0.00**
	Moderate	0.87 (0.13)			0.70 (0.24)			7.57 (2.15)
	High	0.81 (0.18)			0.67 (0.30)			9.94 (2.39)

A priori hypothesised significant differences between known groups in the ICECAP-A index score are shown in italics

^§Results of univariate analysis

^§§Results of multivariate regression analysis using age, BMI, detrusor overactivity, surgery, advance prolapse, and voiding difficulty as covariates

* Significant differences between groups at the 5 % level using one-way ANOVA

** Significant differences between groups at the 1 % level using one-way ANOVA

^†Significant differences between groups at the 5 % level using a Kruskal–Wallis H test

^††Significant differences between groups at the 1 % level using a Kruskal–Wallis H test