“…12,[16][17][18][19]23,24,[29][30][31]33,34,41 The method used to calculate ABI varied. Some studies used the highest ankle pressure divided by the highest brachial pressure, 10,12,22,24,[28][29][30]41 whereas others reported multiple methods of calculating the ABI using: the lowest, highest and/or average of both ankle pressures; 14,17,34 the lowest ankle pressure; 11,18 an average of two ankle pressures 19,21,26 or did not specify which ankle pressures were used; 13,35,42 the highest ankle pressure divided by the brachial pressure from the same side or a single brachial pressure; 16,27,31,38 or single ankle pressure. 25 There was insufficient reporting to determine the method used to calculate the ABI in nine studies 15,20,23,25,33,36,37,39,…”