Table 1. Contingency nine-points score showing sensitivity and specificity of the score.

Nine-points oxalate histological score	PHO (n = 11)	SHO (n = 8)	KLTPHO (n = 7)	Control (n = 12)
Score (5–9)	9/11 (82%)	4/4 (50%)	4/3 (57%)	1/12 (8%)
p (Fischer exact test) versus control	0.0006	0.1089	0.0379
Sensitivity/specificity	0.82 (0.52–0.97)	0.5 (0.22–0.78)	0.57 (0.25–0.84)	Sp 0.92 (0.64–1.00)
Score (6–9)	8/11 (73%)	4/4 (50%)	1/6 (14%)	0/12 (0%)
p (Fischer exact test) versus control	0.0003	0.0144	0.3684
Sensitivity/specificity	0.73 (0.43–0.90)	0.5 (0.22–0.78)	0.14 (0.01–0.51)	Sp 1 (0.76–1.00)