2.4 Main outcome measures
Postoperative blood collection for the measurement of blood ILC2s was
performed at 6.3 ± 1.3 months after ESS in the non-eCRS patients, and at
6.0 ± 1.1 months after ESS in the eCRS patients. The radiographic
severity of CRS was assessed using the LMK-CT score6,
and postoperative CT imaging was performed at 14.7 ± 5.0 months after
ESS in the non-eCRS patients, and at 13.6 ± 3.9 months after ESS in the
eCRS patients. We calculated the postoperative LMK-CT score improvement
rate by dividing the preoperative score by the postoperative score. In
addition, using the postoperative LMK-CT score improvement rate, cases
with more than 50% (≥ 50%) improvement were classified into the good
outcome group, and cases with less than 50% (< 50%)
improvement were classified into the poor outcome group.