Table 4. Association between CRS and the number of BEs within 2 years before enrollment in patients with bronchiectasis.

Variables	Any bronchiectasis exacerbation within 2 years			At least 4 bronchiectasis exacerbations within 2 years
	OR	95% CI	P value	OR	95% CI	P value
CRS diagnosis	2.47	0.52–11.76	0.26	0.86	0.40–1.86	0.71
Model 1	2.69	0.56–12.92	0.22	0.81	0.37–1.76	0.59
Model 2	2.83	0.58–13.92	0.20	0.74	0.33–1.62	0.45
Model 3	2.88	0.58–14.27	0.20	0.73	0.33–1.62	0.44
Model 4	2.56	0.51–12.94	0.26	0.70	0.31–1.58	0.39

OR: Odds ratio; 95%CI: 95% confidence interval; BSI: Bronchiectasis Severity Index

Model 1: CRS diagnosis + adjustment with sex

Model 2: Model 1 + adjustment with smoking status

Model 3: Model 2 + adjustment with asthma or COPD diagnosis

Model 4: Model 3 + adjustment with the BSI