BMC Neurology

Table 3 Discriminative value: Sensitivity and specificity of individual test items on first two days of admission

From: Development and external validation of a new PTA assessment scale

		Mild TBI (n = 105/n = 51)^a		Moderate/Severe TBI (n = 21/n = 18)^a		Controls (n = 31/n = 31)^a
Items		Sensitivity (%)	p Value ^b	Sensitivity (%)	p Value ^b	Specificity (%)
*Selected*
Age	Day 1	6	0.336	19	0.022	100
	Day 2	6	0.292	22	0.016	100
Name of hospital	Day 1	11	0.068	50	0.000	100
	Day 2	12	0.412	35	0.011	96
Time	Day 1	23	0.002	33	0.001	100
	Day 2	20	0.087	39	0.005	96
Day of week	Day 1	11	0.732	33	0.022	93
	Day 2	13	0.088	28	0.008	100
Month	Day 1	8	0.198	33	0.001	100
	Day 2	0	-	29	0.006	100
Mode of transport	Day 1	19	0.044	48	0.000	97
	Day 2	18	0.025	56	0.000	100
Recall memory items	Day 2	46	0.541	71	0.039	62
Recognition memory items	Day 2	27	0.273	50	0.013	85
*Rejected*
City of hospital	Day 1	4	0.574	24	0.008	100
	Day 2	6	0.547	17	0.062	100
Period of day	Day 1	8	0.198	33	0.001	100
	Day 2	10	0.161	33	0.003	100
Date	Day 1	25	1.0	62	0.008	77
	Day 2	24	0.122	39	0.021	92
Year	Day 1	3	1.0	29	0.013	97
	Day 2	6	1.0	22	0.142	96
Admission date	Day 1	29	0.438	71	0.062	62
	Day 2	24	1.0	72	0.001	80

^aNumber of patients between parenthesis: first number on day 1, second number on day 2. ^bp Value: patients versus controls. TBI, traumatic brain injury.

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