Table 5. Principal component analysis of the clinical features and relative abundance of microbiota.

	Principal component (% of total variance)
	1 (32.2%)	2 (16.0%)	3 (13.7%)	4 (11.5%)	5 (10.2%)
Diagnosis	0.407	0.188	0.701	−0.332	−0.064
Duration	0.143	0.862	−0.030	−0.094	−0.085
Nasal disease duration	0.020	0.825	0.247	0.031	0.072
Inhale corticosteroid	−0.848	−0.063	−0.140	0.212	−0.047
Sputum neutrophilia	0.833	0.096	0.128	0.124	0.109
Prevotellaceae	−0.084	−0.089	−0.930	−0.074	−0.131
Acidaminococcaceae	0.121	−0.017	0.080	0.010	0.982
Veillonellaceae	−0.045	−0.041	−0.045	0.961	0.008