Table 1.

presents the difference between two groups of patients treated with two different methods

Patient group	Patients with aspiration	Patients without aspiration	P-value
Patients undergoing open partial supraglottic laryngectomy	20	1	P<0.01
Patients undergoing partial supraglottic laryngectomy via CO2 laser	6	14

Chi square test 18.7919; P 0.000015; statistically significant for P<0.01