Kaur 2018.

Study characteristics
Methods	Parallel‐group randomised controlled trial
Participants	60 participants Inclusion criteria: conscious people intubated for ≤ 3 days but requiring a further 4 days of intubation. Exclusion criteria: haemodynamically unstable people.
Interventions	Intervention A communication chart focused on physiological, emergency, and psychological needs of an intubated patient, with needs represented by pictures. Control Usual care.
Outcomes	Satisfaction.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Non‐replacement lottery method to allocate 30 participants into control and intervention groups.
Allocation concealment (selection bias)	Unclear risk	Not described. Further information sought but not obtained.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Unable to blind due to nature of intervention.
Blinding of outcome assessment (detection bias) All outcomes	High risk	Principal investigator collected outcome data.
Incomplete outcome data (attrition bias) All outcomes	Low risk	No loss of participants or incomplete outcome data.
Selective reporting (reporting bias)	Low risk	No sign of selective reporting although only 1 outcome of satisfaction.
Other bias	Low risk	No evidence of other bias. Funding source: none stated. Author conflict of interest: none stated.