Self‐care‐based treatment using ordinary elastic bandages for venous leg ulcers.

Category of study designs	Methodological quality criteria	Responses
		Yes	No	Can't tell	Comments
Screening questions (for all types)	S1. Are there clear research questions?	√
	S2. Do the collected data allow to address the research questions?	√
	Further appraisal may not be feasible or appropriate when the answer is ‘No’ or ‘Can't tell’ to one or both screening questions.
Quantitative non‐randomized	3.1. Are the participants representative of the target population?		√		This study only explains the number of target population who have included research, and the inclusion and exclusion criteria of the sample did not describe.
	3.2. Are measurements appropriate regarding both the outcome and intervention (or exposure)?	√			Once patients had perfected the bandage, they visited the clinic once every 1–3 months, and researchers examined the wounds and bandaging techniques. During every visit, two measurements of the maximal perpendicular diameter of VLU were recorded, and these values were multiplied to determine the ulcer size as described by Stacey et al.
	3.3. Are there complete outcome data?	√			Results have complete data description and analysis
	3.4. Are the confounders accounted for in the design and analysis?			√	No description
	3.5. During the study period, is the intervention administered (or exposure occurred) as intended?	√			According to the description of the research design method and results, the intervention is implemented in accordance with the expected

Abbreviation: VLU, Venous leg ulcer.