Bradshaw 1999.

Methods	‐ Controlled before and after study ‐ Groups clearly defined ‐ Selection bias can be excluded ‐ Losses to follow‐up: not described ‐ Duration of follow‐up: clearly defined ‐ No correction for confounders ‐ Overall judgement of quality: medium
Participants	‐ 230 type 2 diabetes patients ‐ United Kingdom ‐ Urban ‐ Recruitement in primary care services ‐ Traditional (87), Video (86), Educator (57) ‐ Sex: M 52.2 % ‐ Age: mean 66.4, traditional (M: 66.7%), video (M: 46.8%), educator (M: 58.5%) ‐ Smoking: 22.2 %, traditional 28.7 %, video 23.3 %, educator 10.5% ‐ Weight: mean 77.9 kg ‐ HbA1c: mean 7.35, traditional 7.63, video 7.35, educator 6.91
Interventions	To assess the effectiveness of three structured educational programmes ( traditional, video and educator) on foot care, management and natural history of diabetes.
Outcomes	Change in levels of knowledge, HbA1c, blood glucose, reported smoking cessation.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	High risk