Table 3.
The number of actual and predicted outcomes of prediction models, according to the score of the reference model.
| Reference model (score) | Positive pressure ventilation use n (%) |
Reference model | Lasso regression | Elastic net regression | Random forest | Gradient boosted tree | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Correctly identified outcome n (%) |
Predicted outcome n |
Correctly identified outcome n (%) |
Predicted outcome n |
Correctly identified outcome n (%) |
Predicted outcome n |
Correctly identified outcome n (%) |
Predicted outcome n |
Correctly identified outcome n (%) |
Predicted outcome n |
||
| 0: (n = 41) | 1 (2.4) | 0 | 6 | 0 | 7 | 0 | 8 | 1 | 9 | 0 | 8 |
| 1: (n = 64) | 3 (4.7) | 1 | 15 | 3 | 11 | 2 | 14 | 2 | 11 | 2 | 11 |
| 2: (n = 359) | 13 (3.6) | 9 | 156 | 12 | 80 | 11 | 106 | 11 | 78 | 12 | 79 |
| 3: (n = 270) | 12 (4.4) | 7 | 109 | 10 | 52 | 12 | 65 | 10 | 58 | 11 | 56 |
| 4: (n = 122) | 3 (0.8) | 2 | 46 | 1 | 20 | 1 | 30 | 2 | 41 | 1 | 24 |
| 5: (n = 58) | 8 (13.8) | 3 | 22 | 7 | 21 | 8 | 24 | 7 | 31 | 8 | 24 |
| 6: (n = 15) | 0 (0.0) | 0 | 3 | 0 | 6 | 0 | 6 | 0 | 8 | 0 | 6 |
| 7: (n = 41) | 5 (12.5) | 3 | 22 | 3 | 22 | 5 | 30 | 4 | 28 | 5 | 29 |
| 8: (n = 24) | 4 (16.7) | 2 | 8 | 4 | 12 | 4 | 14 | 4 | 17 | 4 | 15 |
| 9: (n = 11) | 0 (0.0) | 0 | 2 | 0 | 4 | 0 | 4 | 0 | 7 | 0 | 5 |
| 10: (n = 8) | 5 (62.5) | 3 | 3 | 5 | 7 | 5 | 7 | 5 | 8 | 5 | 7 |
| 11: (n = 3) | 1 (33.3) | 0 | 2 | 1 | 2 | 1 | 3 | 1 | 3 | 1 | 2 |
| 12: (n = 0) | 0 (0) | ||||||||||
| Overall (n = 1,016) | 55 (5.4) | 30 (55) | 394 | 46 (84) | 244 | 49 (89) | 311 | 47 (85) | 299 | 49 (89) | 266 |
| Reference model (Score) | Intensive treatment n (%) |
Reference model | Lasso regression | Elastic net regression | Random forest | Gradient boosted tree | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Correctly identified outcome n (%) |
Predicted outcome n |
Correctly identified outcome n (%) |
Predicted outcome n |
Correctly identified outcome n (%) |
Predicted outcome n |
Correctly identified outcome n (%) |
Predicted outcome n |
Correctly identified outcome n (%) |
Predicted outcome n |
||
| 0: (n = 41) | 2 (4.9) | 1 | 10 | 1 | 8 | 0 | 5 | 0 | 4 | 0 | 4 |
| 1: (n = 64) | 8 (12.5) | 1 | 11 | 5 | 17 | 5 | 11 | 5 | 12 | 5 | 9 |
| 2: (n = 359) | 44 (12.2) | 21 | 157 | 27 | 133 | 23 | 111 | 26 | 77 | 24 | 87 |
| 3: (n = 270) | 36 (13.3) | 18 | 118 | 28 | 75 | 28 | 71 | 23 | 64 | 28 | 75 |
| 4: (n = 122) | 17 (13.8) | 8 | 53 | 9 | 36 | 9 | 33 | 7 | 40 | 10 | 53 |
| 5: (n = 58) | 17 (29.3) | 6 | 26 | 14 | 30 | 14 | 30 | 15 | 28 | 15 | 29 |
| 6: (n = 15) | 3 (20.0) | 0 | 3 | 3 | 7 | 2 | 7 | 3 | 9 | 3 | 12 |
| 7: (n = 41) | 19 (47.5) | 15 | 28 | 19 | 38 | 19 | 36 | 18 | 32 | 18 | 35 |
| 8: (n = 24) | 7 (29.2) | 4 | 8 | 7 | 18 | 7 | 17 | 7 | 16 | 7 | 17 |
| 9: (n = 11) | 1 (9.1) | 0 | 3 | 1 | 10 | 1 | 9 | 1 | 6 | 1 | 7 |
| 10: (n = 8) | 7 (87.5) | 3 | 4 | 7 | 7 | 7 | 7 | 7 | 8 | 7 | 8 |
| 11: (n = 3) | 2 (66.7) | 0 | 1 | 2 | 3 | 2 | 3 | 2 | 3 | 2 | 3 |
| 12: (n = 0) | 0 (0) | ||||||||||
| Overall (n = 1,016) | 163 (16.0) | 77 (47) | 422 | 123 (75) | 382 | 117 (72) | 340 | 114 (70) | 299 | 120 (74) | 339 |