Table 4.

Glottal gap rating on direct laryngoscopy

Score*	Group A, no. of patients			Group B, no. of patients
	3 mo	9 mo	p value†	3 mo	9 mo	p value†
4	0	0	0.08	1	1	0.3
3	0	0		2	1
2	3	0		3	4
1	2	5		1	1

^*1 = minimal gap, 2 = moderate gap, 3 = severe gap, 4 = complete glottal incompetence.

^†Wilcoxon signed-rank test for paired observations applied to values measured at 3 and 9 months.