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Table 2 Characteristics of ARDS patients and controls of the replication study

From: A vascular endothelial growth factor receptor gene variant is associated with susceptibility to acute respiratory distress syndrome

Characteristics Complete dataset (n = 2235)a Analyzed dataset (n = 895)b
Cases (n = 1122) Controls (n = 1113) Cases (n = 661) Controls (n = 234)
Gender (% male) 56 61 58 67
Mean age (years) (P25P75) 56 (44–70) 62 (51–75) 60 (48–73) 58 (45–73)
Ventilator-free days (median) (P25P75) 17 (0–24) 27 (24–29) 14 (0–23) 27 (24–28)
Mortality (%) 23 6 28 5
  1. ARDS acute respiratory distress syndrome, P25 percentile 25, P75 percentile 75
  2. aTotal number of individuals included in the GWAS study by the ARDSnet and the iSPAAR Consortium (ARDS cases and at-risk controls) according to dbGaP study phs000631.v1.p1
  3. bSubset of individuals selected to perform the association study (septic-induced ARDS cases and non-septic and non-ARDS controls)