Table 1

Data from Levyet al ¹ about patients with non-traumatic coma of more than six hours duration (excluding drug induced coma), showing the relation between physical signs at 24 hours and their long term outcome

	Severe disability or worse	Moderate or good recovery	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Likelihood ratio (positive test)	Likelihood ratio(negative test)
Verbal response
Incomprehensible or none	187	45	0.96	0.26	0.81	0.67	1.30	0.16
Orientated, confused or inappropriate	8	16

Eye opening response
To pain/none	270	42	0.89	0.48	0.87	0.53	1.69	0.24
Spontaneous/to noise	34	38

Pupillary light reflex
Absent	78	1	0.26	0.99	0.99	0.26	20.59	0.75
Present	225	79

Corneal reflex
Absent	90	0	0.32	1.00	1.00	0.29	20^1-150	0.68
Present	190	77

Spontaneous eye movements
Roving dysconjugate, other or none	210	19	0.69	0.77	0.92	0.40	2.94	0.40
Orienting or roving conjugate	94	62

Oculocephalic responses
Abnormal/absent	292	61	0.96	0.24	0.83	0.59	1.26	0.18
Normal	13	19

Oculovestibular responses
Abnormal	265	45	0.96	0.32	0.85	0.64	1.40	0.14
Normal	12	21

Motor responses (best limb)
Flexion, extension or none	206	15	0.68	0.81	0.93	0.40	3.66	0.40
Obeying, localising or withdrawing	98	66

Deep tendon reflexes
Absent	67	4	0.24	0.95	0.94	0.26	4.67	0.80
Present	213	74

Skeletal muscle tone
Absent	120	8	0.44	0.89	0.94	0.30	3.98	0.63
Present	155	65

↵1-150 Not able to calculate exactly.