Banasik 2011.

Methods	Randomised controlled trial
Participants	Women with diagnosed stage II‐IV breast cancer at least 2 months post treatment Recruited through a local cancer centre's database Mean age 62.9 years N = 18
Interventions	• Iyengar yoga (yoga postures), 8 weeks, twice weekly for 90 minutes • Wait‐list, no treatment for 8 weeks
Outcomes	Health‐related quality of life (Functional Assessment of Cancer Therapy ‐ Breast Cancer) at week 8 Fatigue (new non‐validated instrument) at week 8
Notes	Small sample size without a priori sample size calculation Large baseline differences between groups
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No information on random sequence generation ("[...] were randomly assigned [...]")
Allocation concealment (selection bias)	Unclear risk	No information on allocation concealment
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	No information on blinding
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No information on blinding
Incomplete outcome data (attrition bias) All outcomes	Low risk	22% dropout but well balanced across groups
Selective reporting (reporting bias)	Low risk	No protocol available but no hint of selective reporting
Other bias	High risk	Large baseline differences between groups