Weighted Polynomial Approximation for Automated Detection of Inspiratory Flow Limitation

Table 2

Cut-off points of classification criteria.

Class∖method	FI	1st-order	2nd-order	3rd-order	w.3rd-order
NIFL	>0.175	>6.19	≤1.17	≤0.34	≤0.87
IFL Level 1	>0.095 & ≤0.175	>4.54 & ≤6.19	>1.17 & ≤1.96	>0.34 & ≤1.02	>0.87 & ≤2.7
IFL Level 2	≤0.095	≥4.54	>1.96	>1.02	>2.7