Efficacy of small-volume simethicone given at least 30 min before gastroscopy

Table 2 Study results

	Placebo group	Simethicone group	P value
TMVS ± SD	8.89 ± 1.97	5.78 ± 1.65	< 0.001
Mean esophagus score ± SD	1.59 ± 0.57	1.48 ± 0.57	0.482
Mean duodenum score ± SD	2.26 ± 0.81	1.26 ± 0.53	< 0.001
Mean antrum and angularis score ± SD	2.56 ± 1.05	1.30 ± 0.54	< 0.001
Mean body and fundus score ± SD	2.44 ± 0.97	1.74 ± 0.81	0.006
Mean volume of additional water flushes required ± SD (mL)	84.81 ± 110.18	3.89 ± 11.46	< 0.001
Procedure time ± SD (s)	193.67 ± 87.04	154.85 ± 49.07	0.049

TMVS: Total mucosal visibility score.