Table 2.

Probability of a patient with CRS (with or without polyps) achieving an MCID after ESS based on their preoperative SNOT-22 score grouping

Preoperative SNOT-22 Grouping	Probability of achieving an MCID after ESS	Relative improvement (%)
10-19 (n=8)	3 (37.5%)	+18.8%
20-29 (n=27)	15 (55.6%)	−36.1%
30-39 (n=44)	33 (75.0%)	−47.2%
40-49 (n=63)	52 (82.5%)	−45.0%
50-59 (n=59)	49 (83.1%)	−48.6%
60-69 (n=56)	49 (87.5%)	−49.5%
70-79 (n=45)	41 (91.1%)	−48.3%
80-89 (n=13)	10 (76.9%)	−44.9%
90-99 (n=10)	8 (80.0%)	−34.6%
100-109 (n=2)	2 (100.0%)	−69.1%
OVERALL	262 (80.1%)	−46.4%

CRS, chronic rhinosinusitis; SNOT, sinonasal outcome test; ESS, endoscopic sinus surgery; MCID, minimal clinically important difference