Study	Reason for exclusion
Allegra 1994	No allocation concealment, no double‐blinding, score C.
Andreozzi 1993	No double‐blinding, no appropriate randomisation.
Cina 1996	No double‐blinding, no appropriate randomisation.
Deutschinoff 1987	No appropriate randomisation.
Montesi 1991	No double‐blinding, no appropriate randomisation, unblinded outcome assessment.
Serrao 1991	No appropriate randomisation, non‐appropriate double‐blinding, allocation clearly unconcealed, method of random sequence generation not stated.
Simoni 1993	No appropriate randomisation, no double‐blinding, unblinded outcome assessment.
WAVE 2007	Data on the subgroup of patients with intermittent claudication were not available.