Table 2 |
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|
Risk of bias of included RCTs* |
||||||||
|
Study |
Random sequence generation |
Allocation concealment |
Patient blinding |
Assessor blinding |
Reporting drop-out or withdrawal† |
Intention-to-treat analysis† |
Selective outcome reporting |
Other potential bias |
|
|
||||||||
|
Clollinge (1998) [10] |
Low |
Low |
High |
Low |
Low |
High |
High |
Unclear |
|
Dybwad (2007) [11] |
Low |
Low |
High |
Low |
Low |
Unclear |
Low |
Low |
|
Surawy (2005) [12] |
Unclear |
Unclear |
High |
Unclear |
High |
Unclear |
Unclear |
Unclear |
|
Walach (2008) [13] |
Low |
Low |
Low |
Low |
Low |
High |
Low |
Low |
|
Field (1997) [14] |
Low |
Unclear |
High |
High |
Unclear |
Unclear |
Unclear |
High |
|
Wang (2009) [15] |
Unclear |
Unclear |
Low |
Low |
High |
Unclear |
Low |
Unclear |
|
Liu (2010) [16] |
Unclear |
Unclear |
High |
Unclear |
Unclear |
Unclear |
Unclear |
Unclear |
|
Weatherley-Jones (2004) [17] |
Low |
Low |
Low |
Low |
Low |
Low |
Low |
Low |
|
Awdry (1996) [18] |
Unclear |
Unclear |
Low |
Low |
High |
High |
Low |
Unclear |
|
Hartz (2004) [19] |
Low |
Low |
Low |
Low |
Low |
Low |
Low |
Low |
|
Forsyth (1999) [20] |
Unclear |
Unclear |
Low |
Unclear |
Unclear |
High |
Unclear |
Unclear |
|
Santaella (2004) [21] |
Unclear |
Unclear |
High |
High |
High |
High |
Low |
Unclear |
|
Brouwers (2002) [22] |
Unclear |
High |
Low |
Low |
Low |
Low |
Unclear |
Low |
|
De Becker (2001) [23] |
Unclear |
Low |
Low |
Unclear |
Unclear |
Unclear |
Unclear |
Low |
|
The (2007) [24] |
Low |
Low |
Low |
Low |
Low |
Low |
Unclear |
Low |
|
McDertmott (2006) [25] |
Low |
Low |
Low |
Low |
Low |
High |
Low |
Low |
|
Stewart (1987) [26] |
Unclear |
Unclear |
High |
High |
Low |
High |
High |
Unclear |
|
Rothschild (2002) [27] |
Unclear |
Unclear |
Low |
Low |
High |
High |
Unclear |
Unclear |
|
Vermeulen (2004) [28] |
Low |
Low |
Low |
Low |
Low |
Low |
Low |
Low |
|
Behan (1990) [29] |
Low |
Low |
High |
High |
Low |
Unclear |
High |
Unclear |
|
Warren (1999) [30] |
Low |
Low |
Low |
Low |
Low |
Low |
Low |
Unclear |
|
Kaslow (1989) [31] |
Unclear |
Low |
Low |
Low |
Low |
Unclear |
Unclear |
Low |
|
Ockerman (2000) [32] |
Unclear |
Low |
Low |
Low |
Low |
Unclear |
Unclear |
Low |
|
Cox (1991) [33] |
Unclear |
Unclear |
Low |
Low |
Unclear |
High |
Low |
Unclear |
|
Tiev (1999) [34] |
Unclear |
Unclear |
Unclear |
Unclear |
Low |
Unclear |
Unclear |
Unclear |
|
Willams (2002) [35] |
Unclear |
Unclear |
Unclear |
Unclear |
Low |
Unclear |
Unclear |
Unclear |
|
|
||||||||
|
*, Domains of quality assessment based on Cochrane tools for assessing risk of bias. †, Two domains referring to 'incomplete outcome data' in the Cochrane tools for assessing risk of bias. ‡, This study had a baseline imbalance in the subjective outcome values. Abbreviations; Low (low risk of bias);/High (high risk of bias); Unclear (uncertain risk of bias). |
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|
Alraek et al. BMC Complementary and Alternative Medicine 2011 11:87 doi:10.1186/1472-6882-11-87 |
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