Table 1.

Baseline characteristics according to the mode of renal replacement therapy before and after propensity score matching

OverallPPropensity-MatchedSDi
IHD (n = 470)CRRT (n = 266)IHD (n = 158)CRRT (n = 158)
Patients, n (%)
    Age (years; mean [SD])65.7 (15.0)63.7 (14.5)0.0865.2 (14.3)65.6 (13.6)2.9
    Male314 (66.8)180 (67.7)0.8299 (62.7)116 (73.4)23.2
    Body mass index (mean [SD])26.5 (5.2)26.9 (5.5)0.3727.1 (5.7)26.9 (5.3)3.6
    SAPS II score (SD)56.3 (19.6)65.6 (22.3)<0.000159.0 (20.7)61.7 (22.0)12.6
    Number of organ failure (mean [SD])2.2 (1.2)2.9 (1.1)<0.00012.5 (1.1)2.5 (1.1)0
    McCabe score (mean [SD])1.4 (0.7)1.6 (0.7)<0.0031.6 (0.8)1.5 (0.7)13.3
    Ventilated (mean [SD])289 (61.5)237 (89.1)<0.0001128 (81.0)132 (83.5)6.6
    Coma Glasgow scale (mean [SD])11.4 (4.9)10.1 (5.3)<0.00211.2 (4.9)11.0 (5.0)4.0
    Cardiac rhythm (mean [SD])98 (38)108 (41)<0.001109.0 (38.3)105.3 (40.5)9.4
    Arterial pressure (mmHg; mean [SD])70.4 (28.2)59.1 (24.9)<0.000164.7 (26.0)63.1 (27.2)6.0
    Days from admission to inclusion (mean [SD])2.4 (5.8)3.1 (7.7)0.243.8 (5.7)3.7 (9.5)1.3
    Body temperature (°C; mean [SD])36.8 (1.9)36.9 (2.5)0.4336.9 (2.1)37.0 (2.4)4.4
    White blood cell count (cells/μl; mean [SD])13,889 (9525)14,879 (10,037)0.214,479 (10,201)13,999 (8158)5.2
    Platelets count (cells/ml; mean [SD])191,190 (127,190)161,410 (134,740)<0.004163,030 (117,520)173,030 (114,990)8.6
    Prothrombin rate (%; mean [SD])58.3 (22.7)47.4 (23.5)<0.000153.7 (22.4)53.8 (23.8)0.4
    pH (mean [SD])7.274 (0.154)7.227 (0.175)<0.00057.267 (0.167)7.262 (0.160)3.1
    Kaliemia (mmol/L; mean [SD])4.7 (1.4)4.5 (1.2)0.074.54 (1.28)4.50 (1.18)4.1
    Lactate levels (mean [SD])4.3 (4.0)6.2 (5.1)<0.00014.6 (3.9)4.7 (4.0)2.5
    Bicarbonates (mean [SD])17.2 (6.2)18.0 (7.1)0.1618.6 (7.7)18.5 (6.9)1.4
    Urea (mmol/L; mean [SD])24.6 (15.6)17.7 (10.6)<0.000119.8 (13.0)19.6 (11.8)1.6
    Serum creatinine (μmol/L; mean [SD])366.9 (304.7)252.6 (144.4)<0.0001256.8 (154.8)267.9 (158.0)7.1
    Urine output (ml/d; mean [SD])991 (1009)826 (924)<0.03962 (768)922 (942)4.7
    Hematocrit (%; mean [SD])30.8 (8.3)29.9 (8.2)0.1531.0 (8.3)31.2 (8.0)2.5
    Hemoglobin (g/dl: mean [SD])10.36 (2.90)10.13 (3.29)0.3710.36 (2.64)10.33 (2.58)1.5
    Received systemic antibiotics (n [%])247 (52.6)205 (77.1)<0.0001116 (73.4)115 (72.8)4.1
    Vasopressive support274 (58.3)216 (81.2)<0.0001106 (67.1)109 (69.0)4.1
    Immunosuppression86 (18.3)41 (15.4)0.3231 (19.6)21 (13.3)17.1
    Diabetes131 (27.9)61 (22.9)0.1545 (28.5)41 (26.0)5.7
    Hypertension238 (50.6)120 (45.1)0.1581 (51.3)80 (50.6)1.3
Catheter (n [%])
        Antiseptic-impregnated catheter150 (31.9)11 (4.1)<0.000110 (6.3)10 (6.3)0
catheter site
    Femoral (versus jugular)232 (49.4)138 (51.9)0.5274 (46.8)85 (53.8)14.0
Days of insertion
    Mean (SD)6.3 (6.2)6.6 (6.0)0.538.6 (7.9)7.2 (6.0)20.0
    Median (IQR)5 (2 to 8)5 (2 to 9)0.316 (3 to 11)6 (3 to 10)NA
Conditional probability to receive IHD
    Mean (SD)0.76 (0.23)0.42 (0.23)<0.00010.54 (0.19)0.53 (0.20)NA
    Median (IQR)0.83 (0.60 to 0.95)0.40 (0.24 to 0.59)<0.00010.52 (0.40 to 0.65)0.52 (0.40 to 0.66)NA
  • Sdi, standardized difference; NA, not applicable.