Table 2.

Correlation between demographic and clinical data, and diversity measures

Population	Spearman Correlation (P-value)
All individuals	Cumulative antibiotics (30 days)	Days exposed (30 days)	Cumulative Antibiotics (7 days)	Days exposed (7 days)	Age (years)	Charlson Comorbidity Index Score	Days hospitalized before LTACH admission
Observed Species (OTUs)	−0.77 (0.009)	−0.72 (0.02)	−0.64 (0.05)	−0.62 (0.05)	−0.44 (0.2)	−0.78 (0.008)	−0.66 (0.04)
Shannon Diversity Index	−0.84 (0.002)	−0.77 (0.01)	−0.54 (0.1)	−0.51 (0.1)	−0.35 (0.3)	−0.85 (0.002)	−0.58 (0.08)
LTACH patients only
Observed Species (OTUs)	−0.65 (0.08)	−0.55 (0.2)	−0.46 (0.3)	−0.41 (0.3)	0.05 (0.9)	−0.65 (0.08)	−0.38 (0.4)
Shannon Diversity Index	−0.69 (0.06)	−0.55 (0.2)	−0.31 (0.4)	−0.23 (0.6)	0.29 (0.5)	−0.7 (0.05)	−0.19 (0.7)