Table 4

The predicted probability of ulcer recurrence within 18 months using model 1 (all recurrent foot ulcers) and model 2 (all recurrent plantar foot ulcers) for two characteristic persons with diabetes using synthesized data

Person APerson B
Model 1
 Age (years)5080
 Severity of peripheral sensory neuropathySevereMild
 Months since healing of previous ulcer324
 Minor lesionsYesNo
 Walking aidNoYes
 At-home foot temperature monitoringYesNo
Probability of ulcer recurrence (95% CI)0.60 (0.54 to 0.66)0.08 (0.04 to 0.13)
Model 2
 Age (years)5080
 Plantar location of previous ulcerYesNo
 Months since healing of previous ulcer324
 Minor lesionsYesNo
 Walking aidNoYes
 Alcohol consumptionNoYes
 Care center
  University medical centerUniversity medical center
  Community hospital
  Podiatry practicePodiatry practice
Probability of ulcer recurrence (95% CI)0.47 (0.38 to 0.56)0.06 (0.04 to 0.10)