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Table 3 Subgroup comparison of different preliminary COVID-19 screening results

From: Management protocol for emergency aneurysm craniotomy clipping in non-major COVID-19 epidemic areas in Beijing, China

Characteristics Normal (conventional OR) Mild suspected (conventional OR) Mild suspected (negative pressure OR) P valuea
No. of patients 34 6 2  
Duration between admission and craniotomy, hours 38.5 ± 17.6 32.8 ± 7.4 25.5 ± 23.3 0.456
Preoperative adverse events during hospitalization
 Rebleeding 0 (0.0) 0 (0.0) 0 (0.0) > 0.99
 Infarction 0 (0.0) 0 (0.0) 0 (0.0) > 0.99
 Epilepsy 1 (2.9) 1 (16.7) 0 (0.0) 0.438
Duration of surgery, h 3.4 ± 0.9 3.3 ± 0.9 5.5 ± 0.0 0.007*
Intraoperative blood loss, ml 233.8 ± 136.9 200.0 ± 154.9 900 ± 848.5 < 0.001*
Mean hospital LOS, days 13.8 ± 7.3 19.3 ± 15.6 20.5 ± 0.7 0.250
Hospitalization cost, dollarsb 12,695.9 ± 5226.2 17,568.7 ± 10,863.7 12,560.6 ± 397.0 0.290
Postoperative complications
 Postoperative hemorrhage 0 (0.0) 0 (0.0) 0 (0.0) > 0.99
 Postoperative DCI 9 (26.5) 3 (50.0) 1 (50.0) 0.453
 Postoperative DVT 9 (26.5) 1 (16.7) 0 (0.0) 0.497
 Postoperative intracranial infection 3 (8.8) 2 (33.3) 0 (0.0) 0.255
Discharge mRS score
 Mean 1.9 ± 1.6 2.2 ± 1.7 1.0 ± 1.4 0.678
 0–2 23 (67.6) 4 (66.7) 2 (100.0) 0.466
 3–6 11 (32.4) 2 (33.3) 0 (0.0)
  1. Values are numbers of cases (%) unless otherwise indicated. Mean values are presented with SDs
  2. aSAH aneurysmal subarachnoid hemorrhage, COVID-19 coronavirus disease 2019, DCI delayed cerebral ischemia, DVT deep vein thrombosis, LOS length of stay, mRS modified Rankin Scale, OR operating room
  3. aP values indicate differences among different preliminary COVID-19 screening result, and P less than 0.05 was considered statistically significant
  4. bThe exchange rate between RMB and USD is 1 USD = 7.0942 RMB
  5. *Statistical significance (p < 0.05)