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Table 2 Descriptive summary of the age, gender, the PEDIS sum score and each of the PEDIS risk factors for the overall sample, any-amputation and major-amputation status. Data are shown in per cent; except the PEDIS sum score and age, which are summarised by the mean. The final count of any-amputees is the sum of the minor- (n = 46) and major amputations (n = 29)

From: Predicting the amputation risk for patients with diabetic foot ulceration – a Bayesian decision support tool

Characteristic Grade/ Score Overall Sample Any-Amputation Major-Amputation
   Non Amputees
(n = 162, 68.4%)
Amputees*
(n = 75, 31.6%)
Non Amputees
(n = 208, 87.8%)
Amputees
(n = 29, 12.2%)
Proportion Frequency (n = 237) Proportion n Proportion n Proportion n Proportion/ Mean n
Gender Female 16.46% 39 12.24% 29 4.22% 10 14.77% 35 1.69% 4
Male 83.54% 198 56.12% 133 27.43% 65 73% 173 10.55% 25
Age, years (mean) 65.91 (SD 12.3) 237 64.59 (SD 12.8) 162 68.76 (SD 10.5) 75 65.55 (SD 12.5) 208 68.52 (SD 12.4) 29
PEDIS Sum (mean) 10.76 (SD 1.9) 237 10.27 (SD 1.9) 162 11.81 (SD 1.4) 75 10.56 (SD 1.9) 208 12.17(SD 1.4) 29
Perfusion Stage 1 48.1% 114 40.93% 97 7.17% 17 45.57% 108 2.53% 6
Stage 2 32.49% 77 20.25% 48 12.24% 29 27.85% 66 4.64% 11
Stage 3 19.41% 46 7.17% 17 12.24% 29 14.35% 34 5.06% 12
Extent Stage 1 3.38% 8 3.38% 8 0% 0 3.38% 8 0% 0
Stage 2 31.22% 74 28.27% 67 2.95% 7 30.38% 72 0.84% 2
Stage 3 65.4% 155 36.71% 87 28.69% 68 54.01% 128 11.39% 27
Depth Stage 1 5.91% 14 5.06% 12 0.84% 2 5.91% 14 0% 0
Stage 2 32.91% 78 28.27% 67 4.64% 11 31.65% 75 1.27% 3
Stage 3 61.18% 145 35.02% 83 26.16% 62 50.21% 119 10.97% 26
Infection Stage 1 36.29% 86 26.16% 62 10.13% 24 33.76% 80 2.53% 6
Stage 2 35.44% 84 22.78% 54 12.66% 30 29.54% 70 5.91% 14
Stage 3 25.74% 61 18.14% 43 7.59% 18 22.78% 54 2.95% 7
Stage 4 2.53% 6 1.27% 3 1.27% 3 1.69% 4 0.84% 2
Sensation Stage 1 7.17% 17 5.49% 13 1.69% 4 6.75% 16 0.42% 1
Stage 2 92.83% 220 62.87% 149 29.96% 71 81.01% 192 11.81% 28