Table 4.
Baseline characteristics of adults with chronic obstructive pulmonary disease
| Characteristic | CCAE (USA) |
Medicaid (USA) |
Medicare (USA) |
EHIF (Estonia) |
CPRD (UK) |
SIDIAP (Spain) |
IPCI (The Netherlands) |
AUSOM (South Korea) |
| No of patients | 83 593 | 113 118 | 87 679 | 11 168 | 32 531 | 77 329 | 5365 | 1044 |
| Sex: male, % | 53.2 | 43.5 | 51.4 | 62.5 | 52.7 | 73 | 54.1 | 89.6 |
| Age at index (years), mean | 54.9 | 62.2 | 75.9 | 66.5 | 66 | 67.2 | 64.5 | 68.8 |
| Charlson Comorbidity Index, mean | 2.4 | 3.8 | 4.1 | 2.6 | 2.1 | 2.1 | 1.8 | 2.5 |
| Common comorbid conditions, % (any time prior first diagnosis) | ||||||||
| Anxiety | 21.4 | 36 | 12.6 | 5.8 | 24.7 | 19.6 | 18 | 1.8 |
| Cerebrovascular disease | 10.2 | 19.2 | 33.8 | 7.3 | 7.4 | 3.4 | 7.4 | 3.5 |
| Depressive disorder | 21.5 | 41.5 | 14.8 | 9.5 | 29.4 | 13.4 | 16.3 | 2.7 |
| Diabetes mellitus | 23 | 37 | 33.2 | 12.8 | 11.2 | 21.4 | 15.4 | 16.4 |
| Heart failure | 7.3 | 20.5 | 22.1 | 36.2 | 3.5 | 6.4 | 5.4 | 4.9 |
| Hypertensive disorder | 58.7 | 76.6 | 81.4 | 29.8 | 38.3 | 52.4 | 35.4 | 41.2 |
| Ischaemic heart disease | 14.2 | 20.2 | 28 | 23.9 | 15.4 | 10.5 | 16.2 | 16.1 |
| Obesity | 15.2 | 21.1 | 9 | 10.3 | 4.4 | 24.8 | 5.5 | 0.6 |
| Lower respiratory tract infections (previous year) | 30.4 | 32.6 | 30.8 | 39.1 | 5.3 | 27 | 22.4 | 20.6 |