Bahmani 2016.

Methods	Study design: parallel RCT Time frame: not reported Follow‐up period: 3 months
Participants	Country: Iran Setting: single centre (Shahid Hasheminejad Hospital dialysis section, Iran) Inclusion criteria: female patients with ESKD who were required to refer to the treatment centre 2 to 3 times/week Number (analysed/randomised): treatment group (9/11); control group (11/11) BDI score at baseline: treatment group (16.37 ± 9.37); control group (19.09 ± 9.01) Mean age ± SD (years): not reported Sex (M/F): treatment group (0/11); control group (0/11) Antidepressant medication: not reported Exclusion criteria: not reported
Interventions	Treatment group Combination of treatment including some elements of "existentialism" philosophy and a "cognitive" approach, 12 sessions of 90 minutes 2 days/week Control group No intervention Co‐interventions Not reported
Outcomes	Depression BDI‐II: score lower than 14 defines the minimum level of depression, between 14 to 19 is considered mild, 20 to 28 is moderate, and 29 to 63 is interpreted as a high level of depression Hope MHS
Notes	Funding source: not reported Trial registration identification number: not reported Corresponding author: M. M. Najjar (maryam.motamed@gmail.com)
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "The patients were randomly assigned into two groups of experimental and control conditions." Comment: Sequence generation methods were not reported in sufficient detail to perform an adjudication
Allocation concealment (selection bias)	Unclear risk	Method of allocation concealment was not reported in sufficient detail to perform an adjudication
Blinding of participants and personnel (performance bias) All outcomes	High risk	Blinding of participants and/or the investigators was not reported. However, the methods of intervention and control treatment were physically different, and therefore masking of intervention was unlikely
Blinding of outcome assessment (detection bias) All outcomes	High risk	Quote: "The tool is used for self‐report of signs of depression for individuals above 13 years old and higher." Comment: BDI‐II was completed by participants. Participants were likely to be aware of the intervention they received. Therefore, the outcome assessment for depression was not blinded
Incomplete outcome data (attrition bias) All outcomes	High risk	Quote: "Two of the participants in the experimental group withdrew their participation due to personal problems." Comment: 2/11 in the intervention group and 0/11 in the control group were lost to the follow‐up for reasons that appeared unrelated to the treatment (> 10% loss to follow‐up; there was a differential loss between groups)
Selective reporting (reporting bias)	High risk	There was no published protocol for this study. This study did not report many patient‐centred outcomes that might be expected for a study of this type (i.e. life participation, fatigue, dialysis withdrawal, adverse events, death)
Other bias	Unclear risk	It was not clear if there was evidence of imbalance at baseline. Not reported in sufficient detail to perform an adjudication