Oncological and Functional Outcome after Surgical Treatment of Early Glottic Carcinoma without Anterior Commissure Involvement

Table 5

Acoustic parameters in both groups of patients before treatment and 12 months after the treatment.

	Pretreatment (mean ± SD)		After 12 months (mean ± SD)
	Endoscopic laser cordectomy	Open cordectomy	Endoscopic laser cordectomy	Open cordectomy
F0 (Hz)	149.49 ± 21.78	149.62 ± 28.2	144.32 ± 23.1	146.66 ± 26.69
Student’s t-test	P  =  0.399		P  =  0.757
Jitter (%)	0.52 ± 0.15	0.47 ± 0.15	0.71 ± 0.27	0.56 ± 0.16
Student’s t-test	P  =  0.684		P  =  0.003 *
Shimmer (%)	5.78 ± 0.98	5.6 ± 0.97	6.47 ± 1.22	6.02 ± 1.04
Student’s t-test	P  =  0.341		P  =  0.238
NNE (dB)	−5.41 ± 1.18	−5.92 ± 1.08	−5.6 ± 1.44	−6.05 ± 1.42
Student’s t-test	P  =  0.127		P  =  0.75

^∗𝑃<0.05.