Gilbert 2013.

Study characteristics
Methods	Design: Randomized controlled trial Setting: General practices from the MRC General Practice Research Framework, UK Recruitment: People who smoked, identified using the computer system in participating practice
Participants	6697 adults who smoked, 56% F, av.age 44.6, 17.8 cpd
Interventions	Intervention: participants received non‐tailored information plus a computer‐tailored advice report based on the information obtained in the baseline assessment questionnaire, accompanied by a letter from the GP endorsing the information contained in the report. Participants were sent a follow‐up assessment 1 month after baseline, and received a tailored progress report generated from these additional data Control: participants received standard, non‐tailored information (the NHS ‘Stop Smoking Start Living’ booklet)
Outcomes	3m prolonged abstinence at 6m Validation: None Quit attempts
Funding Source	The trial was supported by funding from Cancer Research UK
Author's declarations of interest	Authors declared that they had no conflict of interest
Notes	Strategy: Tailored print materials Level: Patient Comparison type: Single component vs. standard care
Risk of bias
Bias	Authors' judgement	Support for judgement
Sequence Generation	Low risk	Computer‐generated.
Allocation concealment	Low risk	QUOTE: "These blocked randomisation codes were generated externally and given to an independent administrator in sealed envelopes upon receipt of completed questionnaires"
Blinding of outcome assessors All outcomes	Low risk	Smoking abstinence was self‐reported, but person‐to‐person contact was similar between groups
Incomplete outcome data All outcomes	Low risk	The follow‐up response rate, based on the analyzed sample (n = 6697), was 78.8% (2644) and 75.7% (2530) in the control and intervention groups respectively