Table: Quality assessment for Harrison et al. 2005 (10).

Study	Design	Inclusion/Exclusion Criteria Stated	Consecutive Sampling Used	Similar Baseline Characteristics in Groups?	Treatment Valid and Reliable?	Reliable and Valid Outcome Measure Used?	Outcome Measure Done Independently of Exposure Status?	Duration of Follow-Up Adequate?	Loss to Follow-Up, %
Harrison et al. 2005 (10)	Observational Before/After	✓	✓	✓ Except for cause of leg ulcers. Great number of venous disease leg ulcers in new model than in old mode.	✓	✓	×	✓	8% 10 % in before phase 7% in after phase