Predictive Factors for Failure of Noninvasive Ventilation in Adult Intensive Care Unit: A Retrospective Clinical Study

Table 3

Evaluation of predictive model for NIV outcome.

Dataset	Predictive results	NIV outcome		Total	Sensitivity (%)	Specificity (%)	Youden index (%)
		Success	Failure
Training dataset	Success	25	8	33	71.43	77.78	49.21
	Failure	10	28	38
	Total	35	36	71
Testing dataset	Success	11	4	15	68.75	71.43	40.18
	Failure	5	10	15
	Total	16	14	30