Table 2 Rate ratio of annual exacerbation rates according to exacerbation history by baseline eosinophil count (cells/μL)
|  |  | ≤ 150 cells/μL | > 150–≤ 300 cells/μL | > 300 cells/μL |
|---|---|---|---|---|
All | All patients n = 22,125 | Rate: 0.62 | Rate: 0.65 RR: 1.05 (95% CI 1.00, 1.11) | Rate: 0.67 RR: 1.09 (95% CI 1.03, 1.15) |
Exacerbation history | 0 exacerbations n = 6792 | Rate: 0.38 | Rate: 0.39 RR: 1.01 (95% CI 0.90, 1.12) | Rate: 0.44 RR: 1.14 (95% CI 1.00, 1.30) |
1 exacerbation n = 9759 | Rate: 0.62 | Rate: 0.66 RR: 1.07 (95% CI 0.99, 1.15) | Rate: 0.67 RR: 1.10 (95% CI 1.01, 1.19) | |
≤ 1 exacerbation n = 16,551 | Rate: 0.51 | Rate: 0.53 RR: 1.04 (95% CI 0.98, 1.11) | Rate: 0.57 RR: 1.10 (95% CI 1.03, 1.19) | |
≥ 2 exacerbations n = 5574 | Rate: 1.02 | Rate: 1.10 RR: 1.08 (95% CI 0.99, 1.16) | Rate: 1.07 RR: 1.04 (95% CI 0.95, 1.15) |