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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: Ann Emerg Med. 2015 Dec 31;67(4):439–448. doi: 10.1016/j.annemergmed.2015.10.020

Table 3.

A, Performance of STONE score for symptomatic stone on CT with and without renal PLUS.
STONE Score Finding on Renal PLUS Symptomatic Stone on CT Se (95% CI) Sp (95% CI) LR+ (95% CI) LR- (95% CI)
Yes No
All patients (n = 835)
Without PLUS 442 393 NA NA NA NA
Any hydro 288 98 65 (61-70) 75 (71-79) 2.6 (2.1-3.1) 0.46 (0.41-0.53)
Moderate of greater 123 23 44 (38-51) 93 (89-95) 6.1 (4.1-9.3) 0.60 (0.54-0.67)
Low (n = 144)
Without PLUS 14 130 3.2 (1.7-5.3) 67 (62-72) 0.1 (0.06-0.16) 1.5 (1.4-1.6)
Any hydro 9 17 64 (36-86) 87 (80-92) 4.9 (2.7-8.9) 0.41 (0.2-0.83)
Moderate or greater 3 2 38 (10-74) 98 (93-99) 21.6 (4.2-111) 0.64 (0.37-1.1)
Moderate (n = 411)
Without PLUS 183 228 41 (37-46) 42 (37-47) 0.71 (0.62-0.82) 1.4 (1.2-1.6)
Any hydro 109 67 60 (52-67) 71 (64-76) 2.0 (1.6-2.6) 0.57 (0.48-0.69)
Moderate or greater 53 15 42 (36-48) 92 (86-95) 4.9 (2.9-8.3) 0.64 (0.55-0.74)
High (n = 280)
Without PLUS 245 35 55 (51-60) 91 (88-94) 6.2 (4.5-8.6) 0.49 (0.44-0.55)
Any hydro 170 14 69 (63-75) 60 (42-76) 1.7 (1.1-2.6) 0.51 (0.41-0.64)
Moderate or greater 67 6 47 (39-56) 78 (57-91) 2.1 (1.0-4.4) 0.68 (0.57-0.81)
B, Performance of STONE score for urologic intervention with and without renal PLUS.
Urologic Intervention
STONE Score Finding on Renal PLUS Yes No Se (95% CI) Sp (95% CI) LR+ (95% CI) LR- (95% CI)
All patients (n = 835)
Without PLUS 113 702 NA NA NA NA
Any hydro 88 298 66 (57-74) 58 (54-61) 1.6 (1.3-1.8) 0.59 (0.46-0.75)
Moderate or greater 48 98 36 (28-45) 86 (83-89) 2.6 (1.9-3.5) 0.74 (0.65-0.84)
Low (n = 144)
Without PLUS 9 135 6.7 (3.3-13) 81 (78-84) 0.35 (0.18-0.67) 1.1 (1.1-1.2)
Any hydro 4 22 44 (15-77) 84 (76-89) 2.7 (1.2-6.2) 0.66 (0.37-1.2)
Moderate or greater 3 2 33 (9-69) 99 (94-99) 23 (4.3-117) 0.68 (0.43-1.1)
Moderate (n = 411)
Without PLUS 65 346 49 (40-58) 51 (47-55) 0.99 (0.82-1.2) 1.0 (0.85-1.2)
Any hydro 36 140 55 (43-68) 60 (54-65) 1.4 (1.1-1.8) 0.75 (0.57-0.98)
Moderate or greater 19 49 29 (19-42) 86 (82-89) 2.1 (1.3-3.3) 0.82 (0.7-0.96)
High (n = 280)
Without PLUS 59 221 44 (36-53) 69 (65-72) 1.4 (1.1-1.8) 0.81 (0.7-0.95)
Any hydro 48 136 81 (69-90) 39 (32-45) 1.3 (1.1-1.6) 0.48 (0.28-0.84)
Moderate or greater 26 47 44 (31-58) 79 (73-84) 2.1 (1.4-3) 0.71 (0.57-0.89)

Hydro, Hydronephrosis; Se, sensitivity; Sp, specificity; LR+, positive likelihood ratio; LR−, negative likelihood ratio.