Effect of Preoperative Mastoid Ventilation on Tympanoplasty Success

Table 2

Graft success rates of the mastoid ventilation groups at the 12th month.

Mastoid ventilation	Graft success
Group I ()	6 (85.7%)
Group II ()	11 (78.6%)
Group III ()	23 (63.9%)
	0.352

Pearson Chi-square test.