Table 2. Rank the order of features in SVM-RFE method.

Features	Coefficients	Rank the order
Middle turbinate plasty	−4.75266432	1
Nasosinusitis	−2.21413383	2
Nasal surgery history	−2.3517654	3
Seansonal allergy history	3.03876115	4
Age	−0.06223234	5
SNOT22 Score	0.03536382	6
BMI	−0.17801399	7
Smoke	−1.088097	8
Follow up time	−0.35657536	9