TABLE 4
Quality Assessment of Studies and Risk of Bias for Each Study Considered
Study
Design
Selection bias
Reporting bias
Reference standard
Randolph (2002)
High
High
High
High
Hoyes (2004)
High
High
Low
High
Bal (2006)
Unclear
High
High
High
Santra (2011)
High
High
High
High
Giovanella (2013)
Low
Low
Low
Low