Table 3.

Characteristics of randomized comparisons of hyoscine butylbromide and placebo groups reported in the literature

Study	Group	Polyp detection rate	Adenoma detection rate	Polyps per patient (n)	Adenomas per patient (n)
Byun et al[20]	Hyoscine butylbromide	45.6%	35.0%	NR	NR
	Placebo	39.2%	29.4%
Lee et al[21]	Hyoscine butylbromide	34.5%	NR	0.9 ± 1.8	NR
	Placebo	25.9%		0.6 ± 1.2
Corte et al[10]	Hyoscine butylbromide	43.6%	27.1%	0.91 ± 0.084	0.55 ± 0.073
	Placebo	36.6%	21.8%	0.70 ± 0.075	0.42 ± 0.062
de Brouwer et al[15]	Hyoscine butylbromide	55.9%	29.7%	1.13	NR
	Placebo	60.2%	31.4%	1.21
Rondonotti et al[16]	Hyoscine butylbromide	38.6%	31.7%	NR	NR
	Placebo	37.0%	28%

NR: Not reported.