Number of errors, error-related adverse events and process indicators, by weekend–weekday admission and epoch
| Both epochs | Epoch 1 | Epoch 2 | |||||||
| Total | W/E | W/D | Total | W/E | W/D | Total | W/E | W/D | |
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |
| Total | 4000 | 2000 | 2000 | 2000 | 1000 | 1000 | 2000 | 1000 | 1000 |
| Total number of errors | 1618 | 803 | 815 | 914 | 440 | 474 | 704 | 363 | 341 |
| Number of errors | |||||||||
| None | 2970 (74.3) | 1486 (74.3) | 1484 (74.2) | 1447 (72.4) | 723 (72.3) | 724 (72.4) | 1523 (76.2) | 763 (76.3) | 760 (76.0) |
| Any error | 996 (24.9) | 497 (24.9) | 499 (25.0) | 541 (27.1) | 269 (26.9) | 272 (27.2) | 455 (22.8) | 228 (22.8) | 227 (22.7) |
| 1 | 645 (16.1) | 328 (16.4) | 317 (15.9) | 338 (16.9) | 178 (17.8) | 160(16) | 307 (15.4) | 150 (15.0) | 157 (15.7) |
| 2 | 208 (5.2) | 100 (5.0) | 108 (5.4) | 121 (6.1) | 53 (5.3) | 68 (6.8) | 87 (4.4) | 47 (4.7) | 40 (4.0) |
| 3 | 83 (2.1) | 36 (1.8) | 47 (2.4) | 43 (2.2) | 18 (1.8) | 25 (2.5) | 40 (2.0) | 18 (1.8) | 22 (2.2) |
| 4 | 31 (0.8) | 17 (0.9) | 14 (0.7) | 22 (1.1) | 12 (1.2) | 10 (1.0) | 9 (0.5) | 5 (0.5) | 4 (0.4) |
| 5 or more | 29 (0.7) | 16 (0.8) | 13 (0.7) | 17 (0.9) | 8 (0.8) | 9 (0.9) | 12 (0.6) | 8 (0.8) | 4 (0.4) |
| Missing | 34 (0.9) | 17 (0.9) | 17 (0.9) | 12 (0.6) | 8 (0.8) | 4 (0.4) | 22 (1.1) | 9 (0.9) | 13 (1.3) |
| Mean number of errors per patient admission* | 0.408 | 0.405 | 0.411 | 0.460 | 0.444 | 0.476 | 0.356 | 0.366 | 0.345 |
| Patients with one or more adverse events | 103 | 49 | 54 | 68 | 31 | 37 | 35 | 18 | 17 |
| Process indicators | |||||||||
| Location not appropriate | 118 (3.0) | 59 (3.0) | 59 (3.0) | 61 (3.1) | 29 (2.9) | 32 (3.2) | 57 (2.9) | 30 (3.0) | 27 (2.7) |
| Incomplete vital signs | 1280 (32.0) | 596 (29.8) | 684 (34.2) | 597 (29.9) | 280 (28.0) | 317 (31.7) | 683 (34.2) | 316 (31.6) | 367 (36.7) |
| NEWS not recorded | 2060 (51.5) | 982 (49.1) | 1078 (53.9) | 1090 (54.5) | 521 (52.1) | 569 (56.9) | 970 (48.5) | 461 (46.1) | 509 (50.9) |
| No specialist review <14 hours documented | 2811 (70.3) | 1393 (69.7) | 1418 (70.9) | 1448 (72.4) | 727 (72.7) | 721 (72.1) | 1363 (68.2) | 666 (66.6) | 697 (69.7) |
*Calculated using 'total number of errors ÷ (all records excluding errors missing)'.
NEWS, National Early Warning Score; W/D, weekday; W/E, weekend.