Measurement of hepatic functional mass by means of 13C-methacetin and 13C-phenylalanine breath tests in chronic liver disease: Comparison with Child-Pugh score and serum bile acid levels

Table 4 Comparison between area under the receiver operating characteristic (ROC) curves for methacetin breath test (MBT) and phenylalanine breath test (PBT).

Group	Time (min)	MBT		PBT		χ2
		Area	SE	Area	SE
CTR vs all patient	60	0.86	0.04	0.73	0.04	0.02
CH vs C	60	0.89	0.03	0.69	0.05	0.003
CTR vs CH	60	0.67	0.07	0.56	0.008	ns
CH vs C-Child A	60	0.79	0.05	0.6	0.07	0.02

CTR : Controls; CH: Chronic hepatitis; C: Cirrhosis (Child A,B,C).