| Mouthpiece group (n = 180) | Airway group (n = 180) | P-value |
---|---|---|---|
Adverse reaction | Â | Â | Â |
 Palate injury (%) | 0 (0.0) | 0 (0.0) | NA |
 Hypotention (%) | 22 (12.2) | 9 (5.0) | 0.015 |
 Nausea/vomiting (%) | 4 (2.2) | 5 (2.8) | 0.736 |
 Cough (%) | 15 (8.3) | 8 (4.4) | 0.131 |
 Body movements (%) | 21 (11.7) | 10 (5.6) | 0.039 |
 Body movements, general (%) | 18 (10.0) | 9 (5.0) | 0.072 |
 Body movements, serious (%) | 3 (1.7) | 1 (0.6) | 0.315 |
 Hiccup (%) | 3 (1.7) | 1 (0.6) | 0.315 |
 Arrhythmia (%) | 7 (3.9) | 3 (1.7) | 0.200 |
The satisfaction | Â | Â | Â |
 The satisfaction of endoscopist (good/fair/poor) | 128/42/10 | 148/30/2 | 0.012 |
 The satisfaction of patient (good/fair/poor) | 108/60/12 | 121/55/4 | 0.084 |