Predictor | Coefficient | 95% CI | Change in variable | Change in ulcer probability |
Model 1: all plantar foot ulcer recurrences | ||||
Intercept | −2.1 | −3.8 to −0.37 | ||
Living alone | 0.76 | 0.015 to 1.5 | No to yes | 0.16 |
Minor lesions | 1.4 | 0.69 to 2.1 | No to yes | 0.25 |
Duration of the previous ulcer | 0.034 | 0.0026 to 0.065 | 12 months | 0.085 |
Barefoot peak plantar pressure | 0.0013 | −0.00013 to 0.0027 | 255 kPa | 0.07 |
Variation in daily stride count | −0.047 | −0.10 to 0.0098 | 700 steps | −0.065 |
Model 2: plantar foot ulcer recurrence from unrecognized repetitive stress | ||||
Intercept | −1.8 | −2.5 to −1.1 | ||
Minor lesions | 2.2 | 1.3 to 3.1 | No to yes | 0.37 |
Duration of the previous ulcer | 0.038 | 0.0047 to 0.071 | 12 months | 0.064 |
Previous ulcer location: | ||||
Metatarsal heads | Reference | |||
Hallux | −1.6 | −2.8 to −0.4 | In comparison to patients with an ulcer at the metatarsal heads | −0.028 |
Toes | −2.0 | −3.6 to −0.4 | −0.21 | |
Midfoot | 0.024 | −2.3 to 2.4 | 0.21 |
CI, Confidence interval.