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Retrospective Cohort Study
Copyright: ©Author(s) 2026.
World J Gastrointest Surg. Jun 27, 2026; 18(6): 120692
Published online Jun 27, 2026. doi: 10.4240/wjgs.120692
Table 3 Comparison of the time for middle ear effusion to resolve, and the improvement in hearing and eustachian tube function, mean ± SD
GroupnTime for fluid accumulation to subside (days)Air-bone conductance difference (dB)
ETDQ-7 (points)
Preoperative
1 month after surgery
Preoperative
1 month after surgery
Control group4842.10 ± 8.3228.56 ± 6.3922.04 ± 4.57a4.54 ± 1.223.75 ± 1.16a
Observation group6428.39 ± 6.5129.09 ± 5.9518.92 ± 4.65a4.47 ± 1.172.63 ± 0.97a
t9.7870.4533.5390.3215.595
P value< 0.0010.6510.0010.749< 0.001


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