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Table 4 Quality of included studies

From: Effects of mindfulness-based interventions on biomarkers in healthy and cancer populations: a systematic review

Study Trial qualitya Intervention quality
Oken et al. (2010) [21] AS (+)
AC (+)
PK (+)
IO (?)
Manual (+)
Training (+)
Integrity check (?)
Barrett et al. (2012) [33] AS (+)
AC (+)
PK (-)
IO (+)
Manual (+)
Training (+)
Integrity check (?)
Creswell et al. (2012) [35] AS (+)
AC (+)
PK (-)
IO (+)
Manual (+)
Training (+)
Integrity check (?)
Gallegos et al. (2013) [36] AS (+)
AC (+)
PK (-)
IO (+)
Manual (+)
Training (?)
Integrity check (?)
Rosenkranz et al. (2013) [37] AS (+)
AC (+)
PK (+)
IO (?)
Manual (+)
Training (+)
Integrity check (?)
Hayney et al. (2014) [34] AS (+)
AC (+)
PK (+)
IO (?)
Manual (+)
Training (+)
Integrity check (?)
Johnson et al. (2014) [22] AS (+)
AC (+)
PK (-)
IO (+)
Manual (+)
Training (?)
Integrity check (?)
Carlson et al. (2003) [31] AS (-)
AC (-)
PK (-)
IO (+)
Manual (+)
Training (?)
Integrity check (?)
Carlson et al. (2007) [32] AS (-)
AC (-)
PK (-)
IO (+)
Manual (+)
Training (?)
Integrity check (?)
Witek-Janusek et al. (2008) [38] AS (-)
AC (-)
PK (-)
IO (?)
Manual (+)
Training (+)
Integrity check (?)
Lengacher et al. (2012) [39] AS (-)
AC (-)
PK (-)
IO (?)
Manual (+)
Training (+)
Integrity check (?)
Lengacher et al. (2013) [40] AS (+)
AC (+)
PK (-)
IO (?)
Manual (+)
Training (+)
Integrity check (?)
Bower et al. (2015) [23] AS (+)
AC (+)
PK (?)
IO (-)
Manual (+)
Training (?)
Integrity check (?)
  1. AS adequate generation of allocation sequence, AC concealment of allocation, PK prevention of knowledge of the allocated intervention, IO dealing with incomplete outcome data
  2. aRisk of bias: low (+), high (–), or unclear (?) [24]