Table 2

Quality assessment of included RCTs

Study (author, country, year)Type of studyBase populationRandomisationBlindingConfoundingLosses to follow-upAnalysis
Ronnemaa, Finland, 199722RCTCommunity-based care in Finland, receiving antidiabetic drug treatment from the national drug reimbursement registerRandomisation performed separately for men/women and patients </> 20 years. Method of randomisation not describedOutcome assessor blinded to baseline characteristics but no further information on blinding providedBaseline characteristics not describedFollow-up completed by 63% of patients in intervention group and 62% patients in control group at 7 yearsNo intention to treat analysis undertaken
Plank, Austria, 200323RCTAll in routine outpatient care at hospital diabetic foot clinic in AustriaSubjects were assigned a patient number in ascending order and randomly allocated to the intervention or control groupAllocation concealment ensuredSimilar baseline characteristicsAll patients followed upIntention to treat and per protocol analysis
  • RCT, randomised controlled trial.