Main outcome measures
The Korean version of the Sniffin’ stick II (KVSS-II) was used to
perform the olfactory function test. A visual analog scale and the
Korean version of the Mini-Mental State Examination (K-MMSE) were used
to assess nasal and psychological functions. Three months after the
baseline examination, all subjects were reviewed using endoscopy and the
KVSS-II..
The baseline LM score, POSE score, visual analogue scale (VAS) for
olfactory ability, and KVSS II score (threshold, discrimination,
identification) were collected. The LM scoring system was used to
compare preoperative status. Likewise, the POSE scoring system was used
for the comparison of postoperative status. Olfactory function was
evaluated using KVSS-II. The LM score was used to describe the CT
findings. This score ranges from 0 (complete lucency of all sinuses) to
24 (complete opacity of all sinuses).15