Table 2.

AUC analysis of differences between routine and modified Mch challenge in the two subject groups

FO Index	Group	Δ AUC (Modified-Routine)	SE Δ	P Value
R5	Nonobese	4.37	2.36	0.065
	Obese	−2.79	2.66	0.296
R20	Nonobese	2.60	1.60	0.104
	Obese	−2.23	1.80	0.217
R5-R20	Nonobese	1.84	1.19	0.122
	Obese	−0.27	1.34	0.839
AX	Nonobese	27.82	13.76	0.043
	Obese	7.70	15.43	0.618

Data are age adjusted. AUC, area under the curve; AX, integrated area of low frequency reactance.