Table 2

Summary of DFU prediction for four foot temperature asymmetry thresholds

Asymmetry threshold
2.22°C2.75°C3.20°C3.75°C
Sensitivity (%)97907050
Specificity (%)43576881
Alert frequency (per participant/year)3.12.21.71.1
Alert lead time (days)37 ± 1836 ± 1735 ± 1635 ± 17
Positive predictive value (%)16.619.720.423.6
Negative predictive value (%)99.298.095.192.3
  • Data are means ± SD unless otherwise indicated.