Table 3 Risk of bias of included RCTs *
From: Acupuncture for the treatment of tinnitus: a systematic review of randomized clinical trials
Study | Random sequence generation | Allocation concealment | Patient blinding | Assessor blinding | Incomplete outcome data | Selective outcome reporting |
|---|---|---|---|---|---|---|
Hansen (1982) [16] | U | L | L | L | L | U |
Vilholm (1998) [18] | U | U | L | L | U | U |
Jeon (2012) [20] | L | U | L | L | L | L |
Wang (2010) [21] | U | U | L | U | L | L |
Marks (1984) [17] | U | U | L | L | U | U |
Okada (2006) [15] | H | U | L | L | U | U |
de Azevedo (2007) [12] | H | U | L | L | U | U |
Tan (2007) [22] | U | U | U | U | U | L |
Jiang (2010) [23] | L | U | U | U | U | H |