Protocol based evaluation for feasibility of extubation compared to clinical scoring systems after major oral cancer surgery safely reduces the need for tracheostomy: a retrospective cohort study

Table 2 Evaluation of the clinical scores

	Cameron [16]	Kruse^a [15]	Kim [13]	Gupta [14]
Suggested tracheostomy n / %	117 / 50%	17 / 7%	23 / 10%	44 / 19%
True positive	10	2	4	8
False negative	6	14	12	8
False positive	107	15	19	36
True negative	111	203	199	182
Sensitivity	0.63	0.13	0.25	0.5
Specificity	0.50	0.93	0.91	0.84
Positive predictive value	0.08	0.12	0.17	0.18
Negative predictive value	0.95	0.94	0.94	0.96

^a25 Patients with intermediate risk were attributed to the group without the need for tracheostomy

ISSN: 1471-2253