Use of music during colonoscopy: An updated meta-analysis of randomized controlled trials

Table 1 Description of studies included in the meta-analysis

Ref.	Publication year	Number of patients	Type of study	Type of music
De silva et al[26]	2016	118	RCT	Variety per patient
Martindale et al[33]	2013	119	RCT	Classical
Costa et al[19]	2010	110	RCT	Variety per patient
Bechtold et al[35]	2006	29	RCT	Watermark by Enya
Ovayolu et al[18]	2006	32	RCT	Turkish classical
Harikumar et al[28]	2006	166	RCT	Choice of 6 styles (headphones)
Uedo et al[39]	2004	60	RCT	Easy-listening
López-Cepero Andrada et al[25]	2004	78	RCT	Classical
Smolen et al[32]	2002	34	RCT	Variety per patient
Schiemann et al[38]	2002	133	RCT	Variety radio station
Lee et al[29]	2002	109	RCT	Variety per patient

RCT: Randomized controlled trial.