Table 1

Accuracy of diabetic foot ulcer prediction across four ipsilateral temperature range settings at a constant ambient temperature difference of 10.5°C

Setting1234
Sensitivity97%91%80%53%
Specificity33%46%59%78%
Lead time (days)40±1841±1842±1633±18
Positive predictive value15%17%18%22%
Negative predictive value99%98%96%93%
Alerts (per participant-year)4.94.23.72.2