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. 2016 Apr 20;11(4):e0152714. doi: 10.1371/journal.pone.0152714

Table 7. Summary statistics for the quality of air pressure change as an early warning system for each of the 56 patients.

Diagnostic Parameter Mean Min 1st Quartile 3rd Quartile Max
Sensitivity 54% 0% 43% 67% 100%
Specificity 54% 38% 50% 56% 77%
Positive Predictive Value 9% 0% 3% 12% 40%
Negative Predictive Value 94% 86% 91% 98% 100%