Table 7 Risk classification systems for Diabetic Foot Ulcer (DFU) development or amputation

PODUS 2015 [16]

Variables:

Neuropathy, PAD, history of DFU or lower extremity amputation

Model:

–

Outcome Predicted:

DFU

Time Horizon:

Unclear

Risk Categories:

Moderate risk: neuropathy or PAD

High risk: patient’s history of DFU or amputation

Queensland High Risk Foot Form (QHRFF) tool [18]

Variables:

Foot deformity, neuropathy, PAD, previous ulcer or amputation

Model:

–

Outcome Predicted:

DFU

Time Horizon:

Unclear

Risk Categories:

Low risk: No neuropathy or PAD

At risk: Neuropathy or PAD

High risk: foot deformity with neuropathy and/or PAD or previous ulcer or amputation or critical PAD