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Table 2 Concordance between MM and DISE at the anatomic levels (DISE group, n = 48)

From: Can drug-induced sleep endoscopy improve the success rates of tongue base surgery?

Obstruction level

MM 0

MM 1

MM 2

kappa

P-value

DISE 0

DISE 1

DISE 2

V

0 (0%)

20 (41.7%)

28 (58.3%)

0.115

0.087

0 (0%)

2 (4.2%)

46 (95.8%)

O

3 (62.5%)

32 (66.7%)

12 (25.0%)

0.241

0.005**

7 (14.6%)

13 (27.1%)

28 (58.3%)

T

11 (22.9%)

32 (66.7%)

5 (10.4%)

0.017

0.865

0 (0%)

24 (50.0%)

24 (50.0%)

E

44 (91.7%)

2 (4.2%)

1 (2.1%)

0.122

0.202

39 (81.3%)

3 (6.3%)

5 (10.4%)

  1. The degree of occlusion as per the nasopharyngoscopic study: 0 = no obstruction (0–25%), 1 = partial occlusion (25–75%), and 2 = complete occlusion (≥76%)
  2. Interpretation of kappa index: < 0, no agreement; 0–0.19, poor agreement; 0.20–0.39, fair agreement; 0.40–0.59, moderate agreement; 0.60–0.79, substantial agreement; 0.80–1.00, almost perfect agreement
  3. Abbreviations: MM Muller’s maneuver, DISE Drug-induced sleep endoscopy, V Velum, O Oropharynx lateral wall, T Tongue base, E Epiglottis
  4. * p < 0.05, **p < 0.01, ***p < 0.001; statistical analyses were performed using Cohen’s Kappa test