Table 1 Baseline characteristics of patients (propensity score matched)
From: In-line filtration of intravenous infusion may reduce organ dysfunction of adult critical patients
|  | Fine filter cohort (n = 1506) | Control filter cohort (n = 1506) | P valuea |
|---|---|---|---|
Age (years) | 68 (58.0–75), 65.7 ± 0.3 | 66 (57–74), 63.9 ± 0.3 | Approximate match, P <  0.01, MW 0.54 (0.52–0.56) |
Male sex (n; %) | 1081; 71.8% | 1081; 71.8% | Exact match, P = 1.00 |
Surgery groups (n; %) |  |  | Exact match, P = 1.00 |
 No surgery | 204; 13.5% | 204; 13.5% |  |
 Dermatology, ophthalmology | 4; 0.3% | 4; 0.3% |  |
 Neurosurgery | 1; 0.1% | 1; 0.1% |  |
 Otorhinolaryngology | 16; 1.1% | 16; 1.1% |  |
 Thoracic | 14; 0.9% | 14; 0.9% |  |
 Cardiac | 617; 41.0% | 617; 41.0% |  |
 Vascular | 48; 3.2% | 48; 3.2% |  |
 Visceral and endocrine | 46; 3.1% | 46; 3.1% |  |
 Urology | 12; 0.8% | 12; 0.8% |  |
 Gynaecology | 1; 0.1% | 1; 0.1% |  |
 Obstetric | 3; 0.2% | 3; 0.2% |  |
 Oral and maxillofacial | 2; 0.1% | 2; 0.1% |  |
 Trauma/orthopaedic | 32; 2.1% | 32; 2.1% |  |
 Other surgery | 1; 0.1% | 1; 0.1% |  |
 Mixed | 505; 33.5% | 505; 33.5% |  |
 Discarded for matching (n) | 115 | 88 |  |
Initial SOFA scoreb | 8 (6–11) | 8 (5–11) | > 0.20 |
Initial SAPS IIc | 46 (33.5–58) | 41 (30–56) | < 0.01, MW 0.56 (0.52–0.59) |
Initial TISS-10d | 18 (14–26) | 21 (14–26) | > 0.20 |
Initial TISS-28e | 39 (33–45) | 38 (32.5–45) | 0.17 |
Initial Horowitz indexf | 317 (234–393) | 314 (232–383) | > 0.20 |
Initial creatinine value (mg/dl)g | 0.90 (0.72–1.17) | 0.90 (0.72–1.20) | > 0.20 |
Initial delirium scoreh | 2 (0–5) | 1 (0–3) | < 0.01, MW 0.55 (0.51–0.59) |
Initial interleukin-6 value (ng/l)i | 284.2 (135.9–605.2) | 284.2 (131.2–672.0) | > 0.20 |