Weekend | Weekday | Overall | P values* | |
ED attendances (mean/day; % admitted) | 113 913 (273; 27.2%) | 282 422 (271; 28.6%) | 396 335 (271; 28.2%) | 0.018; <0.001 |
Admissions (mean/day) | 37 979 (91) | 125 149 (120) | 163 128 (112) | <0.001 |
Admission route (mean/day) | ||||
ED | 31 023 (74) | 80 759 (77) | 111 782 (77) | <0.001 |
GP+bed bureau | 3197 (8) | 26 596 (25) | 29 793 (20) | <0.001 |
Outpatient clinic | 859 (2) | 7690 (7) | 8549 (6) | <0.001 |
Other providers | 2900 (7) | 10 104 (10) | 13 004 (9) | <0.001 |
ICU transfers (n (%) of weekend/weekday total admits; % of weekend/weekday ICU24 cases) | ||||
n (% total); n/day | 1579 (4.2%) | 3781 (3.0%) | 5360 (3.3%) | <0.001 |
Direct | 1202 (3.2%; 76.1%) | 2469 (2%; 65.3%) | 3671 (2.3%; 68.5%) | <0.001; <0.001 |
Indirect | 377 (1%; 23.9%) | 1312 (1%; 34.7%) | 1689 (1%; 31.5%) | 0.348; <0.001 |
Sex | ||||
Male | 19 360 (51.0%) | 62 375 (49.8%) | 81 735 (50.1%) | <0.001 |
Female | 18 619 (49.0%) | 62 774 (50.2%) | 81 393 (49.9%) | <0.001 |
Age (years) | ||||
Median (IQR) | 60 (40–78) | 60 (42–77) | 60 (41–77) | 0.295 |
Mean (SD) | 58.2 (22.239) | 58.5 (21.393) | 58.4 (21.593) | 0.056 |
Ethnicity | ||||
White | 28 947 (76.2%) | 96 339 (77.0%) | 1 25 286 (76.8%) | 0.005 |
Asian | 4681 (12.3%) | 15 515 (12.4%) | 20 196 (12.4%) | 0.856 |
Black | 1622 (4.3%) | 5322 (4.3%) | 6944 (4.3%) | 1.000 |
Mixed | 507 (1.3%) | 1511 (1.2%) | 2018 (1.2%) | 0.859 |
Other | 1253 (3.3%) | 3294 (2.6%) | 4547 (2.8%) | 0.201 |
Not stated | 969 (2.6%) | 3168 (2.5%) | 4137 (2.5%) | 0.862 |
Charlson Comorbidity Index | ||||
0 | 18 626 (49.0%) | 61 393 (49.1%) | 80 019 (49.1%) | 0.733 |
1–5 | 6716 (17.7%) | 21 646 (17.3%) | 28 362 (17.4%) | 0.072 |
>5 | 12 637 (33.3%) | 42 110 (33.6%) | 54 747 (33.6%) | 0.278 |
Income deprivation decile | ||||
Median (IQR) | 4 (1–6) | 4 (1–6) | 4 (1–6) | 0.858 |
Mean (SD) | 4.2 (2.788) | 4.2 (2.770) | 4.2 (2.774) | 0.621 |
Previous admissions† | ||||
0 | 33 330 (87.8%) | 110 028 (87.9%) | 143 358 (87.9%) | 0.601 |
1 | 3943 (10.4%) | 13 071 (10.4%) | 17 014 (10.4%) | 1.000 |
2 | 575 (1.5%) | 1696 (1.4%) | 2271 (1.4%) | 0.150 |
≥3 | 131 (0.3%) | 354 (0.3%) | 485 (0.3%) | 1.000 |
NEWS24 value | ||||
Median (IQR) | 1 (0–3) | 1 (0–2) | 1 (0–2) | <0.001 |
Mean (SD) | 1.8 (2.049) | 1.7 (1.969) | 1.7 (1.989) | 0.008 |
Length of stay (days) | ||||
Median (IQR) | 3 (1–8) | 2 (1–7) | 2 (1–7) | <0.001 |
Mean (SD) | 7.1 (13.129) | 6.9 (13.248) | 7.0 (13.221) | 0.008 |
Z-LOS (%) | 6529 (17.2) | 27 390 (21.9) | 33 919 (20.8) | <0.001 |
ED, emergency department; GP, general practitioner; ICU, intensive care unit; NEWS, National Early Warning Score; Z-LOS, zero length of stay.
*Comparison between weekend and weekday.
†Within 30 days prior to the current admission.