Cardiovascular event rates per million person-days (number of events), by quintile of average of previous 3 days black smoke and quintile of baseline fibrinogen
| Black smoke quintiles: mean values (μg/m3 | Fibrinogen quintiles : mean values (g/l) | ||||
|---|---|---|---|---|---|
| 1.87 | 2.31 | 2.64 | 3 | 3.76 | |
| 2.63 | 47 (10) | 38 (8) | 44 (9) | 57 (11) | 97 (18) |
| 4.94 | 33 (7) | 39 (8) | 63 (13) | 98 (19) | 107 (20) |
| 6.97 | 51 (11) | 47 (10) | 38 (8) | 96 (19) | 105 (20) |
| 9.94 | 60 (13) | 52 (11) | 67 (14) | 111 (22) | 83 (16) |
| 19.29 | 47 (10) | 14 (3) | 53 (11) | 71 (14) | 152 (29) |