Table 3. The proportions of bacterial phyla in the fecal microbiota.

Category at phylum level	Control group				BB536 group
	Before surgery		After surgery		Before surgery		After surgery
	median (%)	IQR (%)	median (%)	IQR (%)	median (%)	IQR (%)	median (%)	IQR (%)
Actinobacteria	1.95	0.32–4.89	0.63	0.21–2.60	0.70	0.24–1.90	1.71	0.36–3.09*
Bacteroidetes	24.52	18.32–32.01	32.80	27.17–40.60*	24.72	18.88–32.89	29.56	24.76–32.87
Firmicutes	66.57	57.18–75.96	56.82	46.77–64.24*	62.31	52.34–72.98	56.51	48.46–64.15*
Fusobacteria	0.23	0.08–1.37	0.25	0.07–3.76	0.18	0.10–2.09	0.69	0.09–2.75
Proteobacteria	1.74	1.50–2.16	3.54	2.90–5.84*	2.05	1.54–5.06	3.43	2.27–9.75
Unclassified	0.50	0.37–0.55	0.37	0.26–0.51*	0.33	0.25–0.51	0.32	0.21–0.46

The data for the microbiota were expressed as the median and interquartile range (IQR) of the proportion of each bacterial category. *p<0.05, intra-group difference.