Variable VTI VTI VTI Tympanoplasty Tympanoplasty Tympanoplasty Mastoidectomy Mastoidectomy Mastoidectomy
Children (23) Adults (34) P Children (5) Adults (51) P Children (3) Adults (17) P
Surgical time (min) 11.7 19.1 < 0.05 118 86.6 < 0.05 158.3 155.6 0.897