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Table 1 Characteristics of pediatric patients hospitalized for influenza infection

From: Impact of congenital heart disease on outcomes among pediatric patients hospitalized for influenza infection

Variables Cases, n, (%)
Total influenza cases 125,470
Age, years (median) 5 (IQR: 2–11)
Female 57,055 (45.7%)
Race
 White 49,405 (47.7%)
 Black 20,821 (20.1%)
 Hispanic 23,371 (22.6%)
 Others 9907 (9.6%)
Year
 2003 27,503 (21.9%)
 2006 11,702 (9.3%)
 2009 54,487 (43.4%)
 2012 13,849 (11.0%)
 2016 17,929 (14.3%)
Discharge quarter
 Jan-Mar 36,903 (29.4%)
 Apr-Jun 15,719 (12.5%)
 Jul-Sep 10,232 (8.2%)
 Oct-Dec 62,542 (49.9%)
CHDb 2174 (1.73%)
 Severe CHD 613 (0.5%)
 Non-severe CHD 1561 (1.2%)
Comorbid conditions
 Asthma 34,931 (27.8%)
 Congenital respiratory anomalies 815 (0.7%)
 Congenital musculoskeletal anomalies 1326 (1.1%)
 Chromosomal anomalies 2362 (1.9%)
Complications
 Respiratory failure 6714 (5.4%)
 Acute kidney injury 1534 (1.2%)
 Invasive mechanical ventilation (IMV) 5791 (4.6%)
 Non-invasive mechanical ventilation (NIMV) 1943 (1.5%)
 Myocarditis 199 (0.2%)
 Tachyarrhythmias 514 (0.5%)
 Heart block/conduction disorders 312 (0.3%)
 Sudden cardiac arrest 250 (0.2%)
 ECMOa 211 (0.2%)
 In-hospital mortality 687 (0.54%)
  1. aExtracorporeal membrane oxygenation
  2. bCHD Congenital heart disease