Table 4

Glottal gap rating on direct laryngoscopy

Score*Group A, no. of patientsGroup B, no. of patients
3 mo9 mop value†3 mo9 mop value†
4000.08110.3
30021
23034
12511

  • ↵* 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.