Effect of music on procedure time and sedation during colonoscopy: A meta-analysis

Table 2 Quality assessment by Jadad’s scale and baseline comparison

Study (year of publication)	Is the study randomized?	Is the procedure appropriate & reported?	Is the study blind to the assessors?	Is the blinding method appropriate & reported?	Were the groups similar at baseline?
Andrada et al (2004)[35]	C	C	C	C	C
Bechtold et al (2006)[36]	C	C	N	NA	C
Harikumar et al (2006)[38]	C	C	C	C	P1
Lee et al (2002)[41]	C	P	C	N	C
Ovayolu et al (2006)[42]	C	C	N	NA	C
Schiemann et al (2002)[44]	C	N	N	NA	P2
Smolen et al (2002)[45]	C	N	N	NA	C
Uedo et al (2004)[46]	C	N	N	NA	C

Remark: C, correct; N, not correct; P, partly correct; NA, not applicable.

¹No result provided;

²No test result provided.