Table 1. Univariate analysis of thrombosis group and no thrombosis group.
| Variables | Total (n=594) | No thrombosis group (n=436) | Thrombosis group (n=158) | HR (95% CI) | P |
|---|---|---|---|---|---|
| General information | |||||
| Age (months) | 0.005 | ||||
| <12 | 299 (50.3) | 200 (66.9) | 99 (33.1) | 1.588 (1.150, 2.193) | |
| ≥12 | 295 (49.7) | 236 (80.0) | 59 (20.0) | 1.0 (reference) | |
| Gender | 0.747 | ||||
| Male | 317 (53.4) | 233 (73.5) | 84 (26.5) | 0.950 (0.695, 1.298) | |
| Female | 277 (46.6) | 203 (73.3) | 74 (26.7) | 1.0 (reference) | |
| Blood purification | 0.293 | ||||
| Yes | 108 (18.2) | 72 (66.7) | 36 (33.3) | 1.222 (0.841, 1.777) | |
| No | 486 (81.8) | 364 (74.9) | 122 (25.1) | 1.0 (reference) | |
| On a ventilator | 0.073 | ||||
| Yes | 402 (67.7) | 282 (70.1) | 120 (29.9) | 1.397 (0.969, 2.015) | |
| No | 192 (32.3) | 154 (80.2) | 38 (19.8) | 1.0 (reference) | |
| Limb movement training | 0.009 | ||||
| Yes | 248 (41.8) | 198 (79.8) | 50 (20.2) | 0.639 (0.457, 0.894) | |
| No | 346 (58.2) | 238 (68.8) | 108 (31.2) | 1.0 (reference) | |
| Related medications | |||||
| 20% mannitol or glycerol fructose | <0.001 | ||||
| Yes | 93 (15.7) | 53 (57.0) | 40 (43.0) | 2.103 (1.467, 3.014) | |
| No | 501 (84.3) | 383 (76.4) | 118 (23.6) | 1.0 (reference) | |
| Furosemide | 0.015 | ||||
| Yes | 347 (58.4) | 237 (68.3) | 110 (31.7) | 1.527 (1.087, 2.144) | |
| No | 247 (41.6) | 199 (80.6) | 48 (19.4) | 1.0 (reference) | |
| Heparin sodium | 0.097 | ||||
| Yes | 522 (87.9) | 376 (72.0) | 146 (28.0) | 1.647 (0.913, 2.969) | |
| No | 72 (12.1) | 60 (83.3) | 12 (16.7) | 1.0 (reference) | |
| Hemostatic | 0.295 | ||||
| Yes | 512 (86.2) | 379 (74.0) | 133 (26.0) | 0.796 (0.519, 1.221) | |
| No | 82 (13.8) | 57 (69.5) | 25 (30.5) | 1.0 (reference) | |
| Hormones | 0.928 | ||||
| Yes | 155 (26.1) | 112 (72.3) | 43 (27.7) | 1.016 (0.715, 1.445) | |
| No | 439 (73.9) | 324 (73.8) | 115 (26.2) | 1.0 (reference) | |
| Problems related to catheter insertion | |||||
| Catheter placing position | |||||
| Neck | 472 (79.4) | 359 (76.2) | 113 (23.8) | 0.778 (0.287, 2.111) | 0.622 |
| Stock | 108 (18.2) | 67 (62.0) | 41 (38.0) | 1.403 (0.501, 3.923) | 0.519 |
| Subclavian | 14 (2.4) | 10 (71.4) | 4 (28.6) | 1.0 (reference) | |
| Catheter placing personnel | <0.001 | ||||
| PICU personnel | 193 (32.5) | 108 (56.0) | 85 (44.0) | 2.900 (2.120, 3.966) | |
| Operating room anesthetist | 401 (67.5) | 328 (81.8) | 73 (18.2) | 1.0 (reference) | |
| Successful one-time catheterization | 0.779 | ||||
| Yes | 591 (99.5) | 434 (73.4) | 157 (26.6) | 0.754 (0.106, 5.388) | |
| No | 3 (0.5) | 2 (66.7) | 1 (33.3) | 1.0 (reference) | |
| Insertion length (cm) | <0.001 | ||||
| ≥9 | 157 (26.4) | 95 (60.5) | 62 (39.5) | 2.088 (1.517, 2.875) | |
| <9 | 437 (73.6) | 341 (78.0) | 96 (22.0) | 1.0 (reference) | |
| Hemagglutination term before catheter insertion | |||||
| Prothrombin time | 0.148 | ||||
| >12 s | 279 (47.0) | 191 (68.5) | 88 (31.5) | 1.263 (0.921, 1.732) | |
| ≤12 s | 315 (53.0) | 245 (77.8) | 70 (22.2) | 1.0 (reference) | |
| Thrombin time | 0.22 | ||||
| >17 s | 430 (72.4) | 324 (75.3) | 106 (24.7) | 0.812 (0.583, 1.133) | |
| ≤17 s | 164 (27.6) | 112 (68.3) | 52 (31.7) | 1.0 (reference) | |
| Fibrinogen | 0.041 | ||||
| ≤1.7 g/L | 211 (35.5) | 141 (66.8) | 70 (33.2) | 0.720 (0.526, 0.986) | |
| >1.7 g/L | 383 (64.5) | 295 (77.0) | 88 (23.0) | 1.0 (reference) | |
| Activated partial prothrombin time | 0.003 | ||||
| >32 s | 267 (44.9) | 173 (64.8) | 94 (35.2) | 1.632 (1.185, 2.246) | |
| ≤32 s | 327 (55.1) | 263 (80.4) | 64 (19.6) | 1.0 (reference) | |
| D-dimer | <0.001 | ||||
| >1.5 g/L | 271 (45.6) | 174 (64.2) | 97 (35.8) | 1.872 (1.358, 2.581) | |
| ≤1.5 g/L | 323 (54.4) | 262 (81.1) | 61 (18.9) | 1.0 (reference) |
Data are presented as n (%) if stated otherwise. HR, hazard ratio; CI, confidence interval; PICU, pediatric intensive care unit.