Table 2 Comparison of the posterior pharyngeal wall pressure according to the experience in probe insertion between the blind and McGRATH groups
Blind group | McGRATH group | p value | |
|---|---|---|---|
Inexperienced group | 20.8 ± 8.8 | 8.2 ± 7.2 | < 0.001 |
Experienced group | 9.2 ± 7.3 | 1.1 ± 1.5 | < 0.001 |