Loudon 2014.

Methods	Randomised controlled trial
Participants	Women with diagnosed breast cancer and stage I unilateral secondary lymphoedema of the arm Recruited from community health centres Mean age 57.7 years N = 23
Interventions	• Satyananda yoga (yoga postures, breathing techniques, relaxation techniques, meditation), 8 weeks, once weekly for 90 minutes • Wait‐list, usual care for 8 weeks
Outcomes	Health‐related quality of life (Lymphoedema Quality of Life Tool) at week 8 and week 12 Fatigue (Visual Analogue Scale) at week 8 and week 12
Notes	Other outcome measures related to lymphoedema
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Randomisation was conducted by a person not associated with the trial by a computer‐generated random number system.
Allocation concealment (selection bias)	Low risk	Participants received notification of their group allocation in sealed envelopes after baseline testing.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	No information on blinding of participants and personnel
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Researchers blinded to group allocation and previous results
Incomplete outcome data (attrition bias) All outcomes	Low risk	20% dropout in yoga group, 15% dropout in control group at week 8
Selective reporting (reporting bias)	High risk	Results differ compared with study protocol. Quality of life changed from primary to secondary outcome. 4‐week measurements no longer mentioned, not all outcomes reported
Other bias	High risk	Small sample size; original sample size calculation: 19 participants per group necessary. From Mixed‐Methods Study (Protocol) to Pilot Study