Table 3.
Mean predicted probabilities for deep vein thrombosis (DVT) for each score on Wells rule in various subgroups. Values are percentages (95% confidence intervals)
| Wells score | Overall | Care setting | Malignancy | Sex | History of DVT | ||
|---|---|---|---|---|---|---|---|
| Primary | Secondary or hospital | Male | Female | ||||
| −2 | 2.8 (2.1 to 3.8) | 2.2 (1.5 to 3.0) | 4.6 (2.6 to7.8) | 5.9 (3.6 to 9.7) | 4.5 (3.3 to 6.2) | 2.0 (1.4 to 2.8) | 5.7 (3.6 to 8.8) |
| −1 | 4.8 (3.6 to 6.3) | 4.0 (2.9 to 5.4) | 6.4 (3.8 to 10.7) | 8.9 (5.8 to 13.4) | 7.1 (5.3 to 9.5) | 3.5 (2.6 to 4.7) | 8.6 (5.8 to 12.4) |
| 0 | 7.9 (6.1 to 10.2) | 7.2 (5.4 to 9.6) | 9.0 (5.5 to 14.5) | 13.1 (9.2 to 18.4) | 11.0 (8.4 to 14.2) | 6.1 (4.6 to 8.0) | 12.8 (9.2 to 17.5) |
| 1 | 12.8 (10.2 to 16.2 | 12.8 (9.9 to 16.6) | 12.5 (7.8 to 19.5) | 19.0 (14.2 to 24.9) | 16.6 (13.0 to 20.9) | 10.4 (8.0 to 13.3) | 18.6 (14.0 to 24.3) |
| 2 | 20.0 (15.9 to 24.8) | 21.7 (17.1 to 27.2) | 17.1 (10.9 to 25.8) | 26.6 (20.9 to 33.3) | 24.2 (19.4 to 29.8) | 17.1 (13.5 to 21.4) | 26.3 (20.4 to 33.2) |
| 3 | 30.0 (24.5 to 36.1) | 34.4 (28.0 to 41.5) | 22.9 (14.9 to 33.4) | 36.0 (29.3 to 43.4) | 34.0 (27.9 to 40.7) | 26.9 (21.6 to 32.8) | 35.8 (28.3 to 44.0) |
| 4 | 42.2 (35.5 to 49.3) | 49.8 (42.1 to 57.5) | 30.0 (20.1 to 42.1) | 46.6 (38.7 to 54.7) | 45.4 (38.1 to 52.9) | 39.5 (32.8 to 46.8) | 46.5 (37.3 to 55.9) |
| 5 | 55.6 (48.3 to 62.6) | 65.2 (57.5 to 72.1) | 38.2 (26.4 to 51.5) | 57.5 (48.5 to 66.1) | 57.3 (49.3 to 64.8) | 53.8 (46.1 to 61.4) | 57.5 (46.9 to 67.9) |
| 6 | 68.1 (61.2 to 74.4) | 77.9 (71.5 to 83.3) | 47.0 (33.7 to 60.8) | 67.7 (58.0 to 76.1) | 68.3 (60.5 to 75.3) | 67.5 (59.9 to 74.3) | 67.9 (56.5 to 77.5) |
| 7 | 78.5 (72.6 to 83.4 | 87.0 (82.2 to 90.6) | 56.2 (41.8 to 69.5) | 76.5 (66.7 to 84.1) | 77.7 (70.6 to 83.5) | 78.8 (72.2 to 84.1) | 76.7 (65.5 to 85.2) |
| 8 | 86.2 (81.2 to 89.8) | 92.6 (89.5 to 94.9) | 64.9 (50.3 to 77.1) | 83.5 (74.3 to 89.8) | 84.9 (78.9 to 89.4) | 86.9 (81.1 to 90.7) | 83.7 (73.4 to 90.6) |