Table 5.

Advantages and disadvantages of each rating scale designed to assess chronic venous diseases’ life quality.

Scales	Advantages	Disadvantages
SF-36	It is widely used, and can be compared with the results of other diseases.	It is time-consuming and has plenty of items and does not involve specific content.
EQ-5D	It is divided into 2 parts: health description system and EQ-VAS, and can be filled in easily.	The items are not specific and has not been reported used for CVD patients.
AVVQ	The first question requires the patient to draw the position of his own venous lesion, which can clarify the location of the lesion. It is a scale specifically designed for patients with varicose veins.	It does not involve social activities, emotions, and sleeps.
CIVIQ-20	It has comprehensive content, good reliability, and it is widely used.	Some studies thought its structure was unstable and some item had not entered the structure.
VEINES-QoL/Sym	It describes the lower limb pain in detail and the QOL part can be applied separately	It does not involve sleep and venous ulcer.
CCVLUQ	It is easy to understand, short time-consuming and it has good reliability. So it is suitable for measuring the life quality of patients with venous ulceration of lower limbs.	Few national applications
DVTQOL	Special attention is paid to the anticoagulant medication in patients with DVT, which is very suitable for the measurement of patients with DVT.	It has few national applications and has no official Chinese version yet.
VLU-QoL	Comprehensive coverage	It has plenty of items
SPVLU-5D	Aim at patients with venous ulceration of lower limb.	Seldom applied
CIVIQ-14	It is more concise, convenient and stable, compared to CIVIQ-20.	It does not involve ulcer