(ยก) Hearing Threshold
42 ears (84%) in conventional adenoidectomy group had hearing thresholds higher that 15 dB while 40 ears (80%) in endoscopic microdebrider assisted group had hearing thresholds above 15 dB. p value for preoperative comparison between the groups is 0.604 which is not statistically significant. After 1st follow up the patients with abnormal hearing thresholds were 30 (60%) in conventional curettage group and 20 (40%) in endoscopic approach group. P value for comparison between these groups is 0.047 which shows that the difference is statistically significant. At second follow up, 12 ears (24%) in conventional curettage group had abnormal hearing thresholds while in endoscopic microdebrider group only 2 ears (4%) had hearing thresholds above 15 dB. P value for comparison is 0.004 which is highly significant. (Table 1)