Table 2.

Effect on Enteric Microbiome at T₀ of Antibiotic Therapy in the 3 Months Before HSCT

			Any Antibiotic	β-Lactams	Fluoroquinolones	Anti-anaerobic Therapy
			P	P	P	P
		Shannon index	.001↓	.02↓	.05↓	.003↓
Phylum	Firmicutes	Clostridiaceae	.038↓	.061	.041↓	.038↓
		Enterococcaceae	.138	.045↑	.219	.055
		Peptostreptococcaceae	.072	.011↓	.099	.019↓
		Ruminococcaceae	.038↓	.016↓	.525	.012↓
		Veillonellaceae	.016↓	.040↓	.863	.015↓
	Bacteroidetes	Rickinellaceae	.327	.018↓	.812	.016↓

Only significant differences between patients taking a given class of antibiotics and the rest of the cohort are reported (↑ increase; ↓ decrease). All data, including further details on the statistical analysis, are reported in Supplementary Table 2.