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Table 2 Assessment of ABR and tympanogram before and 6 months after surgery

From: The effect of intervelar veloplasty under magnification (Sommerlad’s Technique) without tympanostomy on middle ear effusion in cleft palate patients

Variable Pre-operation Number (%) Post-operation Number (%) P. value
Abnormal ABRa
 Right 40 (95.2) 11 (25.6) P < 0.005
 Left 40 (95.2) 9 (20.9)
Abnormal Tym. b
 Right 40 (93.0) 14 (33.3) P < 0.005
 Left 40 (93.0) 12 (28.6)
  1. aABR Auditory Brainstem Response
  2. bTym Tympanogram