Table 1 Demographic and baseline characteristics of 82 study subjects.

Characteristic	Value
Age (years)	61.93 (10.62)
Gender (male/female)	32/50
Diabetes	37
Fistula in forearm	74
Aspirin use	19
Hypertension	44
Primary intervention*	52
Current smoker	20
Haemodialysis duration (months)	56.53 (42.62)
Age of fistula (months)	40.63 (38.37)

Data are shown as number or mean (SD), as appropriate.

*Primary intervention is defined as the first intervention of the newly created fistula.