Kumar 2011.

Methods	Randomisation via simple randomisation Double‐blind Analysis by ITT unclear Balancing of prognostic baseline factors between treatment groups unclear
Participants	1 centre in USA 14 participants with subacute (24 to 168 hours) unilateral hemispheric infarction Mean age 75 years
Interventions	Rx: anodal transcranial direct current stimulation C: sham stimulation For 5 consecutive days
Outcomes	Swallowing impairment using dysphagia outcome and severity scale
Notes	Exclusions: difficulty following instructions because of obtundation or cognitive impairment, pre‐existing swallowing problems; other contraindications to transcranial direct current stimulation
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Randomisation via simple randomisation
Allocation concealment (selection bias)	Unclear risk	Unclear
Blinding (performance bias and detection bias) All outcomes	Low risk	Double‐blind
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Double‐blind
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Unclear
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Unclear
Selective reporting (reporting bias)	Low risk	All outcomes reported and explained
Other bias	Low risk	None identified