The Clinical Utility of the Child SCAT5 for Acute Concussion Assessment

Sports Medicine - Open

Table 3 Diagnostic properties for the Child Sport Concussion Assessment Tool 5th edition (Child SCAT5) scores

Outcome Measure	Cutoff Score	Sn	Sp	J	AUC	PPV	NPV	+ LR	-LR	DOR
Symptoms
Total Endorsed	≥ 3 symptoms	0.88	0.54	0.47	0.77	0.54	0.88	1.9	0.22	8.6
Total Severity	≥ 5 points	0.79	0.67	0.42	0.76	0.6	0.84	2.44	0.31	7.97
SAC-C
Immediate Memory	≤ 12 points	0.24	0.86	0.1	0.54	0.51	0.65	1.73	0.89	1.95
Concentration	≤ 4 points	0.85	0.3	0.15	0.51	0.43	0.77	1.21	0.5	2.43
Delayed Recall	≤ 1 point	0.15	0.98	0.12	0.53	0.8	0.65	6.39	0.87	7.32
Composite	≤ 18 points	0.88	0.23	0.11	0.54	0.41	0.76	1.14	0.52	2.19
mBESS
Double Leg	≥ 1 error	0.09	1	0.09	0.54	0.98	0.64	88	0.91	96.39
Single Leg	≥ 7 errors	0.44	0.81	0.11	0.55	0.59	0.7	2.37	0.69	3.45
Tandem	≥ 2 errors	0.5	0.61	0.26	0.63	0.44	0.66	1.27	0.83	1.53
Total	≥ 9 errors	0.47	0.86	0.33	0.64	0.67	0.73	3.36	0.62	5.47

SAC-C = child version of the Standardized Assessment of Concussion, mBESS = modified version of the balance error scoring system, Sn = sensitivity, Sp = specificity, J = Youden Index, AUC = area under the curve, PPV/NPV = positive and negative predictive values, + LR/-LR = positive and negative likelihood ratios, DOR = diagnostic odds ratios