Park 2013.

Methods	Method: RCT Number of dropouts: unclear Number of adverse effects: none Deaths: none ITT: unclear
Participants	Country: Republic of Korea Sample size: 11 participants Inclusion criteria: not explicitly stated; newly diagnosed with radiologically confirmed stroke; written informed consent Exclusion criteria: patients with metal in the head or with skin lesions in the electrode area; significant aphasia
Interventions	2 arms A‐tDCS to the bilateral prefrontal cortex (2 mA for 30 minutes) with the cathode positioned at the non‐dominant arm + computer‐assisted cognitive rehabilitation five times a week for 18.5 days Sham tDCS with the anode positioned over the bilateral prefrontal cortex (2 mA for 30 seconds) with the cathode positioned at the non‐dominant arm + computer‐assisted cognitive rehabilitation five times a week for 17.8 days
Outcomes	Outcomes were measured at baseline and at study end Korean Version of the MMSE Seoul Computerized Neuropsychological Test (SCNT)
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "The patients were randomly assigned to two groups"
Allocation concealment (selection bias)	Unclear risk	Not described by the authors
Blinding of participants and personnel (performance bias) Subjective outcome measures	Unclear risk	Patients were blinded; whereas blinding of personnel was not clearly described by the authors: "The tDCS and the cognitive function test were performed by two independent personnel"
Blinding of participants and personnel (performance bias) Objective outcome measures	Low risk	Patients were blinded; whereas blinding of personnel was not clearly described by the authors: "The tDCS and the cognitive function test were performed by two independent personnel"
Blinding of outcome assessment (detection bias) Subjective outcome measures	Unclear risk	Quote: "The tDCS and the cognitive function test were performed by two independent personnel"
Blinding of outcome assessment (detection bias) Objective outcome measures	Low risk	Quote: "The tDCS and the cognitive function test were performed by two independent personnel."
Incomplete outcome data (attrition bias) Subjective outcome measures	Unclear risk	All randomised participants apparently completed the study; no treatment withdrawals, no losses to follow‐up, no trial group changes and no major adverse events were stated
Incomplete outcome data (attrition bias) Objective outcome measures	Unclear risk	All randomised participants apparently completed the study; no treatment withdrawals, no losses to follow‐up, no trial group changes and no major adverse events were stated
Selective reporting (reporting bias)	Unclear risk	Not all of the 10 dimensions of the Seoul Computerized Neuropsychological Test (SCNT), as stated in the methods section, have been reported