Variable Hospital admissions (n = 132446) Critical care admissions (n = 13401) Advanced respiratory support (n = 7993) Tracheostomy (n = 2200)
Age band (years)
18-39 11943 (9.0%) 1143 (8.5%) 593 (7.4%) 137 (6.2%)
40-49 10569 (8.0%) 1733 (12.9%) 1089 (13.6%) 353 (16.0%)
50-59 17485 (13.2%) 3333 (24.9%) 2175 (27.2%) 676 (30.7%)
60-69 20141 (15.2%) 3766 (28.1%) 2499 (31.3%) 697 (31.7%)
70-79 27951 (21.1%) 2684 (20.0%) 1467 (18.4%) 322 (14.6%)
≥ 80 44357 (33.5%) 742 (5.5%) 170 (2.1%) 15 (0.7%)
Sex Sex
Female 60139 (45.5%) 4272 (32.2%) 2276 (29.0%) 634 (29.3%)
Male 72081 (54.5%) 8980 (67.8%) 5574 (71.0%) 1528 (70.7%)
Missing 226 149 143 38
Deprivation quintile Deprivation quintile
1 (most deprived) 35456 (27.4%) 3675 (28.0%) 2166 (27.8%) 602 (27.9%)
2 28758 (22.2%) 3042 (23.2%) 1887 (24.2%) 515 (23.9%)
3 24179 (18.7%) 2485 (19.0%) 1507 (19.3%) 436 (20.2%)
4 21750 (16.8%) 2008 (15.3%) 1165 (14.9%) 327 (15.2%)
5 (least deprived) 19314 (14.9%) 1894 (14.5%) 1068 (13.7%) 278 (12.9%)
Missing 2989 297 200 42
Ethnicity Ethnicity
White 94825 (80.6%) 7579 (67.5%) 4136 (63.6%) 1113 (62.3%)
South Asian or South Asian British 8497 (7.2%) 1234 (11.0%) 732 (11.3%) 194 (10.9%)
Other Asian or other Asian British 3155 (2.7%) 614 (5.5%) 421 (6.5%) 130 (7.3%)
Black or Black British 6186 (5.3%) 959 (8.5%) 669 (10.3%) 177 (9.9%)
Mixed 1031 (0.9%) 158 (1.4%) 99 (1.5%) 32 (1.8%)
Other ethnic groups 3945 (3.4%) 682 (6.1%) 445 (6.8%) 140 (7.8%)
Missing 14807 2175 1491 414
Charlson Comorbidity Index items* Charlson Comorbidity Index items*
Peripheral vascular disease 6930 (5.2%) 560 (4.2%) 291 (3.6%) 73 (3.3%)
Congestive heart failure 18970 (14.3%) 1405 (10.5%) 771 (9.6%) 149 (6.8%)
Acute myocardial infarction 12152 (9.2%) 990 (7.4%) 540 (6.8%) 99 (4.5%)
Cerebrovascular disease 12239 (9.2%) 736 (5.5%) 538 (6.7%) 210 (9.5%)
Dementia 18931 (14.3%) 109 (0.8%) 32 (0.4%) 10 (0.5%)
Chronic pulmonary disease 34889 (26.3%) 3132 (23.4%) 1693 (21.2%) 480 (21.8%)
Connective tissue disease/rheumatic disease 3933 (3.0%) 322 (2.4%) 180 (2.3%) 35 (1.6%)
Peptic ulcer 896 (0.7%) 97 (0.7%) 64 (0.8%) 19 (0.9%)
Mild liver disease 4446 (3.4%) 551 (4.1%) 325 (4.1%) 101 (4.6%)
Moderate or severe liver disease 1467 (1.1%) 259 (1.9%) 190 (2.4%) 34 (1.5%)
Diabetes without chronic complications 32078 (24.2%) 3762 (28.1%) 2247 (28.1%) 591 (26.9%)
Diabetes with chronic complications 3951 (3.0%) 375 (2.8%) 208 (2.6%) 51 (2.3%)
Paraplegia and hemiplegia 3112 (2.3%) 189 (1.4%) 125 (1.6%) 46 (2.1%)
Renal disease 23821 (18.0%) 1596 (11.9%) 856 (10.7%) 196 (8.9%)
Primary cancer 7459 (5.6%) 517 (3.9%) 248 (3.1%) 53 (2.4%)
Metastatic carcinoma 4076 (3.1%) 151 (1.1%) 58 (0.7%) 6 (0.3%)
HIV/AIDS 197 (0.1%) 22 (0.2%) 15 (0.2%) 3 (0.1%)
Obesity 12167 (9.2%) 2563 (19.1%) 1564 (19.6%) 397 (18.0%)