Table 4.

Sensitivity analysis: EDLIPS performance at different cutoff points (n = 2,361)

	EDLIPS cutoff points
EDLIPS performance	≥5*	≥4	≥6
Prevalence of ALI/ARDS (95% CI)	0.075 (0.065, 0.086)	0.075 (0.065, 0.086)	0.075 (0.065, 0.086)
Sensitivity (95% CI)	0.716 (0.643, 0.781)	0.852 (0.791, 0.901)	0.557 (0.480, 0.632)
Specificity (95% CI)	0.738 (0.719, 0.757)	0.592 (0.571, 0.613)	0.848 (0.832, 0.862)
Positive predictive value	0.181 (0.153, 0.211)	0.144 (0.123, 0.167)	0.227 (0.189, 0.270)
Negative predictive value	0.970 (0.961, 0.978)	0.980 (0.971, 0.987)	0.960 (0.950, 0.968)
Likelihood ratio (+)(95% CI)	2.735 (2.434, 3.073)	2.088 (1.928, 2.261)	3.654 (3.099, 4.308)
Likelihood ratio (−)(95% CI)	0.385 (0.304, 0.487)	0.250 (0.175, 0.357)	0.523 (0.443, 0.618)
C-statistic (95% CI)	0.727 (0.692, 0.762)	0.722 (0.694, 0.750)	0.702 (0.748, 0.820)

*Depicts optimal cutoff.