Table 1.
Baseline characteristics of observed and embolized patients per stratum
| Observation (n = 149) | SAE (n = 57) | |
|---|---|---|
| Age (years) | ||
| Stratum 1 | 38 (25–45) | 46 (32–59) |
| Stratum 2 | 42 (23–60) | 30 (21–48) |
| Stratum 3 | 26 (19–40) | 24 (21–42) |
| Stratum 4 | 47 (29–62) | – |
| Stratum 5 | 25 (19–41) | – |
| ISS (points) | ||
| Stratum 1 | 33 (19–36) | 33 (22–50) |
| Stratum 2 | 23 (14–39) | 22 (16–29) |
| Stratum 3 | 21 (15–32) | 26 (11–37) |
| Stratum 4 | 29 (20–35) | – |
| Stratum 5 | 20 (13–29) | – |
| SBP (RTS categories)* | ||
| Stratum 1 | ||
| 50–75 | 0 (0) | 4 (11) |
| 76–89 | 0 (0) | 2 (6) |
| >89 | 5 (100) | 29 (83) |
| Stratum 2 | ||
| 76–89 | 2 (9) | 2 (11) |
| >89 | 21 (91) | 16 (89) |
| Stratum 3 | ||
| 76–89 | 2 (5) | 0 (0) |
| >89 | 35 (95) | 4 (100) |
| Stratum 4 | ||
| 76–89 | 1 (2) | – |
| >89 | 40 (98) | – |
| Stratum 5 | ||
| >89 | 40 (100) | – |
| Contrast extravasation | ||
| Stratum 1 | ||
| Yes | 5 (100) | 33 (94) |
| No | 0 (0) | 2 (3) |
| Stratum 2 | ||
| Yes | 15 (65) | 17 (94) |
| No | 8 (35) | 1 (6) |
| Stratum 3 | ||
| Yes | 1 (3) | 0 (0) |
| No | 36 (97) | 4 (100) |
| Stratum 4 | ||
| Yes | 0 (0) | – |
| No | 41 (100) | – |
| Stratum 5 | ||
| Yes | 0 (0) | – |
| No | 40 (100) | – |
| Grade of splenic injury | ||
| Stratum 1 | ||
| Grade 1 | – | 1 (3) |
| Grade 3 | 1 (20) | 11 (31) |
| Grade 4 | 4 (80) | 20 (57) |
| Grade 5 | 0 (0) | 3 (9) |
| Stratum 2 | ||
| Grade 1 | 4 (17) | 2 (11) |
| Grade 2 | 6 (26) | 4 (22) |
| Grade 3 | 9 (39) | 8 (44) |
| Grade 4 | 4 (17) | 4 (22) |
| Stratum 3 | ||
| Grade 1 | 2 (5) | 0 (0) |
| Grade 2 | 4 (11) | 0 (0) |
| Grade 3 | 25 (68) | 2 (50) |
| Grade 4 | 6 (16) | 2 (50) |
| Stratum 4 | ||
| Grade 1 | 15 (37) | – |
| Grade 2 | 26 (63) | – |
| Stratum 5 | ||
| Grade 1 | 37(93) | – |
| Grade 2 | 3 (8) | – |
Data are expressed as number (percentage) or median (interquartile range)
Patients with the highest propensity score are located in stratum 1 and patients with the lowest propensity score in stratum 5
ISS injury severity score, SAE splenic artery embolization, SBP systolic blood pressure
* Class I: 1–49, Class II: 50–75, Class III: 76–89, Class IV: >89 mmHg