Grade | Causality n (%) | Total | ||||
---|---|---|---|---|---|---|
Doubtful | Unlikely | Possible | Probable/likely | Highly probable | ||
I | 597 (37.5) | 107 (6.7) | 538 (33.8) | 118 (7.4) | 19 (1.2) | 1379 (86.6) |
II | 86 (5.4) | 49 (3.1) | 62 (3.9) | 10 (0.6) | 1 (0.1) | 208 (13.1) |
IV | 0 (0) | 0 (0) | 0 (0) | 1 (0.1) | 0 (0) | 1 (0.1) |
NA | 3 (0.19) | 2 (0.13) | 0 (0) | 0 (0) | 0 (0) | 5 (0.31) |
Total | 686 (43.1) | 158 (9.9) | 600 (37.7) | 129 (8.1) | 20 (1.3) | 1593 (100) |