Table 4.

Spearman's correlations of changes (from baseline to follow-up) in serum bile acid levels with changes in resting energy expenditure (REE) and respiratory quotient (RQ) in subjects who underwent Roux-en-Y gastric bypass

	REE	RQ
Total bile acids	–0.230	0.333
Primary bile acids	0.184	0.285
CA	0.160	0.217
CDCA	0.210	0.325
Secondary bile acids	0.136	0.019
DCA	0.145	0.024
LCA	–0.014	–0.215
Tertiary bile acids	.	.
UDCA	0.084	0.402a
Unconjugated bile acids	0.260	0.135
Conjugated bile acids	–0.131	0.664c
Glycine-conjugated	0.065	0.545b
Taurine-conjugated	–0.267	0.559b
Unconjugated/conjugated	0.192	0.053

^ap<0.05 (significance; two-tailed)

^bp<0.01(significance; two-tailed)

^cp<0.001 (significance; two-tailed)

CA cholic acid; CDCA chenodeoxycholic acid; DCA deoxycholic acid; LCA lithocholic acid; UDCA ursodeoxycholic acid