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Table 6 Tympanometry finding in the affected (unilateral AOM) or the worst ear (bilateral AOM)

From: Oral prednisolone for acute otitis media in children: a pilot, pragmatic, randomised, open-label, controlled study (OPAL study)

Tympanometry findings Prednisolone (n = 15) Control (n = 22) Effect estimate (relative risk) p value
Complete middle ear effusion resolutiona (n, %)
 Day 3 (visit 1) 6 (40) 5 (23) 1.76 (0.65, 4.73) 0.29
 Day 7 (visit 2) 8 (53) 8 (36) 1.47 (0.71, 3.04)  
 Day 30 (visit 3) 8 (53) 11(50) 1.07 (0.57, 2.00)  
 Day 90 (visit 4) 12 (80) 15 (68) 1.17 (0.80, 1.72)  
Improvement of curve type from baseline visitb (n, %)
 Day 3 (visit 1) 7 (47) 7 (32) 1.47 (0.65, 3.32) 0.49
 Day 7 (visit 2) 12 (80) 10 (45) 1.76 (1.04, 2.97)  
 Day 30 (visit 3) 10 (67) 14 (64) 1.05 (0.65, 1.69)  
 Day 90 (visit 4) 14 (93) 16 (73) 1.28 (0.96, 1.71)  
Improvement of curve type from previous visitc (n, %)
 Day 3 (visit 1) 7 (47) 7 (32) 1.47 (0.65, 3.32) 0.49
 Day 7 (visit 2) 9 (60) 9 (41) 1.47 (0.76, 2.81)  
 Day 30 (visit 3) 9 (60) 13 (59) 1.01 (0.59, 1.74)  
 Day 90 (visit 4) 13 (87) 15 (68) 1.27 (0.89, 1.80)  
  1. aComplete resolution is defined as a type A curve in tympanometry examination
  2. bImprovement of curve type is defined as an improvement from type B curve to type C2, C1, or A curve; or from type C2 curve to type C1 or A curve; or type C1 to A curve; or persisting type A curve at particular time point compared to the baseline
  3. cImprovement of curve type is defined as an improvement from type B curve to type C2, C1, or A curve; or from type C2 curve to type C1 or A curve; or type C1 to A curve; or persisting type A curve at particular time point compared to the previous visit