Table 2.
Baseline characteristics of adults with asthma
| Characteristic | CCAE (USA) |
Medicaid (USA) |
Medicare (USA) |
EHIF (Estonia) |
CPRD (UK) |
SIDIAP (Spain) |
IPCI (The Netherlands) |
AUSOM (South Korea) |
| No of patients | 572 637 | 127 803 | 48 544 | 22 949 | 44 983 | 85 088 | 10 793 | 2579 |
| Sex: male, % | 37.9 | 24.6 | 35.3 | 33.7 | 38.7 | 36.2 | 39.6 | 35.2 |
| Age at index (years), mean | 42.2 | 40 | 73 | 48.6 | 48.2 | 47.5 | 47.6 | 50.9 |
| Charlson Comorbidity Index, mean | 0.8 | 1.4 | 2.4 | 0.9 | 0.6 | 0.4 | 0.5 | 0.8 |
| Common comorbid conditions, % (any time prior first diagnosis) | ||||||||
| Anxiety | 18.1 | 35.9 | 12.4 | 9.5 | 22.8 | 24.2 | 20.4 | 4.1 |
| Atopic disorders | 3.1 | 2.3 | 2.7 | 3.5 | 11 | 3.1 | 12.8 | 7.2 |
| Allergic rhinitis | 34.1 | 26.6 | 25.4 | 14.9 | 17.7 | 23.7 | 24.7 | 25.8 |
| Chronic rhinosinusitis | 18.8 | 15.5 | 17 | 5.3 | 7.9 | 1.5 | 14.1 | 10.3 |
| Depressive disorder | 17.4 | 39 | 13.7 | 12.9 | 26 | 11.6 | 16.2 | 3.3 |
| Diabetes mellitus | 11.4 | 22 | 30.3 | 8 | 6.3 | 7.6 | 8.6 | 8.3 |
| Gastro-oesophageal reflux disease | 17.7 | 30.2 | 29.4 | 12 | 4 | 4 | 3 | 10.2 |
| Nasal polyposis | 1 | 0.4 | 1 | 1 | 1.8 | 1.4 | 0.5 | 1.6 |
| Obesity | 14.1 | 29.2 | 11.2 | 9.8 | 5.6 | 19.4 | 9.5 | 1.9 |
| Lower respiratory tract infections (previous year) | 25.4 | 27.5 | 34.6 | 36 | 3.9 | 23.6 | 15.7 | 16.5 |