. 2005 Jul 15;3:42. doi: 10.1186/1477-7525-3-42

Table 3.

Discriminant validity of the AIA – mean scores by clinical evaluation of 5 symptoms

Symptom	Mean AIA total score by clinical evaluation				Χ²

	None	Mild^a	Moderate^b	Severe^c
Dysuria	3.00	5.97	7.19	10.23***	22.04***
Frequency	3.71	3.03	7.50***	9.32**	38.96***
Urgency	3.50	4.37	6.88*	9.68***	37.39***
Suprapubic pain	6.24	6.39	7.97	10.70**	22.46***
Gross hematuria	6.96	7.49	8.26	9.59	7.07

Mann Whitney U tests used to test differences between clinical evaluations ^aNone and Mild, ^bMild and Moderate, ^CModerate and Severe *p < 0.05, **p < 0.01, ***p < 0.001