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Table 1 Demographic and intraoperative variables

From: Postoperative differences between colonization and infection after pediatric cardiac surgery-a propensity matched analysis

  After propensity matching  
  Infection (n=141) Colonization (n=141)  
Variable Mean/N SD/% Mean/N SD/% p-value
Age (days) 444.1 967.6 352.1 858.3 0.32
Gender (male) 63 45% 61 43% 0.92
Reoperation 30 21% 23 16% 0.35
RACHS (point) 2.7 1.06 2.7 1.1 0.61
Preop. cyanosis 68 48% 71 50% 0.81
Preop. ICU 65 46% 68 48% 0.79
Preop. inotrope 33 23% 33 23% 0.99
Preop. captopril 32 23% 31 22% 0.99
Pulmonary hypertension 46 33% 36 26% 0.22
Down's syndrome 6 4% 8 6% 0.75
CPB time (min) 104.6 86.2 101.3 86.7 0.75
Cross-clamp time (min) 49 48.3 43.3 42.1 0.32
Operation time (min) 223.7 135.2 215.4 124.8 0.61
T min nasal (°C) 31.5 3.9 31.5 4.4 0.94
DHCA 4 3% 6 4% 0.75
Ultrafiltration 21 15% 17 12% 0.58
Nitric oxide 26 18% 27 19% 0.99
Fluid balance (ml/kg) 59.4 48.5 52.7 56.5 0.34
RBC (ml/kg) 41.4 33.8 39.4 31.1 0.54
Aprotinin 33 23% 32 23% 0.99
  1. Data are presented as the number of occurrences and the percentage or as the mean and standard deviation (SD) for categorical and continuous variables, respectively. For categorical variables, the p-values are based on a two-sided chi-squared or Fischer’s exact tests (as appropriate), comparing the infection patients to the colonization patients. For continuous variables, the p-values are based on a t-test or Wilcoxon rank sum test. RACHS: risk adjusted congenital heart surgery, ICU: intensive care unit; DHCA: deep hypothermic cardiac arrest; RBC: red blood cells; CPB: cardiopulmonary bypass.