Table 2.
Characteristics of the cohorts included in the analysis
| Characteristic | In unit participating in pilot between project dates | Not in unit participating in pilot between project dates | ||
|---|---|---|---|---|
| All | Received ECG | No known ECG | No known ECG | |
| n=3110 | n=1015 | n=2100 | n=25,195 | |
| Sex | ||||
| Male | 2110 (67.8) | 705 (69.5) | 1405 (66.9) | 17,640 (70.0) |
| Female | 945 (30.4) | 290 (28.6) | 655 (31.2) | 7270 (28.9) |
| Unknown | 55 (1.8) | 15 (1.5) | 40 (1.9) | 285 (1.1) |
| Age (years) | ||||
| Median (IQR) | 69 (58–78) | 67 (57–77) | 70 (59–79) | 69 (58–78) |
| Type of diabetes | ||||
| Type 1 | 470 (15.1) | 155 (15.3) | 315 (15.0) | 4165 (16.5) |
| Type 2 or other | 2640 (84.9) | 855 (84.2) | 1785 (85.0) | 21,030 (83.5) |
| Duration of diabetes (years) | ||||
| Median (IQR) | 13 (8–20) | 13 (8–19) | 13 (8–20) | 14 (8–20) |
| Ethnicity | ||||
| White | 2525 (81.2) | 810 (79.8) | 1715 (81.7) | 20,540 (81.5) |
| Asian | 115 (3.7) | 45 (4.4) | 70 (3.3) | 925 (3.7) |
| Black | 140 (4.5) | 50 (4.9) | 90 (4.3) | 580 (2.3) |
| Other | 80 (2.6) | 30 (3.0) | 50 (2.4) | 460 (1.8) |
| Missing | 255 (8.2) | 80 (7.9) | 175 (8.3) | 2685 (10.7) |
| Deprivation | ||||
| Most deprived | 925 (29.7) | 290 (28.6) | 635 (30.2) | 6340 (25.2) |
| 2nd most deprived | 640 (20.6) | 220 (21.7) | 420 (20.0) | 5565 (22.1) |
| 3rd most deprived | 690 (22.2) | 205 (20.2) | 485 (23.1) | 4985 (19.8) |
| 2nd least deprived | 505 (16.2) | 175 (17.2) | 330 (15.7) | 4495 (17.8) |
| Least deprived | 295 (9.5) | 105 (10.3) | 190 (9.0) | 3475 (13.8) |
| Missing | 55 (1.8) | 15 (1.5) | 40 (1.9) | 335 (1.3) |
| SINBAD score | ||||
| Site | 600 (19.3) | 165 (16.3) | 435 (20.7) | 4340 (17.2) |
| Ischaemia | 1095 (35.2) | 360 (35.5) | 735 (35.0) | 8625 (34.2) |
| Neuropathy | 2705 (87.0) | 905 (89.2) | 1800 (85.7) | 20,050 (79.6) |
| Bacterial infection | 1315 (42.3) | 465 (45.8) | 845 (40.2) | 11,030 (43.8) |
| Area | 1495 (48.1) | 485 (47.8) | 1010 (48.1) | 12,560 (49.9) |
| Depth | 610 (19.6) | 205 (20.2) | 405 (19.3) | 4850 (19.2) |
| Score 3+ | 1445 (46.5) | 495 (48.8) | 960 (45.7) | 11,520 (45.7) |
| Comorbidities | ||||
| Heart failure | 300 (9.6) | 75 (7.4) | 225 (10.7) | 2245 (8.9) |
| Myocardial infarction | 70 (2.3) | 20 (2.0) | 50 (2.4) | 495 (2.0) |
| Stroke | 90 (2.9) | 25 (2.5) | 65 (3.1) | 520 (2.1) |
| RRT | 120 (3.9) | 35 (3.4) | 85 (4.0) | 890 (3.5) |
| CKD stage 3+ | 785 (25.2) | 255 (25.1) | 530 (25.2) | 6555 (26.0) |
| Died | ||||
| Within 2 years | 600 (19.3) | 165 (16.3) | 430 (20.5) | 5075 (20.1) |
| Within 5 years | 1325 (42.6) | 380 (37.4) | 950 (45.2) | 10,745 (42.6) |
Data are n (%) or median (IQR)
CKD, chronic kidney disease