Table 5.

Predicted probability and diagnostic values of significant variables.

Factor	Diagnosis cut-off point	Sensitivity (%)	Specificity (%)	Area under the curve (AUC)	95% C.I. for AUC	P
Age	57.4	0.58	0.95	0.774	0.685~0.854	0.001
Hexane	480.96	0.68	0.57	0.622	0.529~0.718	0.015
2.2.4.6.6-pentamethylheptane	214.11	0.59	0.84	0.726	0.634~0.816	<0.001
1,2,6-trimethylnaphthalene	0.034	0.94	0.15	0.381	0.281~0.478	0.017
Predicted probability	0.61	0.76	0.94	0.878	0.810~0.940	<0.001