Effect of Preoperative Mastoid Ventilation on Tympanoplasty Success

Table 1

	Mastoid volume (cm³)	Patient number	%	Mean volume
Group I	10 cm³ and above	7	12.28%	11.7322 cm³
Group II	Between 5 and 10 cm³	14	24.56%	7.1755 cm³
Group III	Between 0 and 5 cm³	36	69.91%	2.1237 cm³