Kovacic 2013.

Methods	Randomised controlled trial using Latin Square randomisations
Participants	Women with diagnosed stage I‐II breast cancer receiving multi‐modal therapy (surgery, radiotherapy, chemotherapy) Recruited from the Institute for Oncology Ljubljana Mean age not reported N = 32
Interventions	• Yoga in Daily Life® System (yoga postures, breathing techniques, deep relaxation, progressive muscle relaxation, meditation), 1 week, once daily for 45 minutes combined with standard physiotherapy • Standard physiotherapy
Outcomes	Anxiety (Spielberger's State‐Trait Anxiety Inventory) at week 2 and week 5
Notes	Duplicate publications separately reported different outcomes of the same trial.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	"The Latin Square randomization method was used in the study. Stratifying factors were type of surgery, severity and stage of breast cancer, and socio‐demographic characteristics (age, marital status, employment status, education). Baseline values between experimental and control group regarding stratifying factors were successfully equalized." "A randomization list was prepared by the independent statistician using the random permuted blocks. This technique has ensured that equal numbers of patients within each stratum were randomized to each intervention (restricted stratified randomization)."
Allocation concealment (selection bias)	Low risk	No information on allocation concealment
Blinding of participants and personnel (performance bias) All outcomes	High risk	"[...] patient blinding was impossible [...]"
Blinding of outcome assessment (detection bias) All outcomes	Low risk	"Outcome measures were obtained by blinded assessors [...]."
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	No information on attrition
Selective reporting (reporting bias)	High risk	Duplicate publications separately reported different outcomes of the same trial.
Other bias	Low risk	No hint of other bias