Characteristics of study cohorts
| UK (n=362) | NZ (n=452) | Netherlands (n=254) | All (n=1068) | |
|---|---|---|---|---|
| IHD=ischaemic heart disease; CVD=cerebrovascular disease. | ||||
| Male (%) | 181 (50) | 231 (51) | 138 (54) | 550 (51) |
| Mean age (years) | 64.9 | 63.5 | 64.1 | 64.1 |
| Age ⩾65 years (%) | 210 (58) | 256 (57) | 155 (61) | 621 (58) |
| Age ⩾75 years (%) | 140 (39) | 159 (35) | 92 (36) | 391 (37) |
| Prior antibiotics | 125 (35) | 126 (28) | 66 (26) | 317 (30) |
| Comorbid illnesses | ||||
| Chronic lung disease | 128 (35) | 121 (27) | 126 (50) | 375 (35) |
| IHD/heart failure | 64 (18) | 96 (21) | 37 (15) | 197 (18) |
| CVD | 33 (9) | 54 (12) | 4 (2) | 91 (9) |
| Diabetes mellitus | 28 (8) | 54 (12) | 25 (10) | 107 (10) |
| Dementia | 16 (4) | 24 (5) | Not known | |
| Chronic liver disease | 3 (1) | 6 (1) | 2 (1) | 11 (1) |
| Fine PSI risk class3 | ||||
| I | 48 (13) | 60 (13) | 23 (9) | 131 (12) |
| II | 78 (22) | 80 (18) | 59 (23) | 217 (20) |
| III | 71 (20) | 90 (20) | 62 (24) | 223 (21) |
| IV | 123 (34) | 145 (32) | 88 (35) | 356 (33) |
| V | 42 (12) | 77 (17) | 22 (9) | 141 (13) |