Delirium (N=123) | No delirium (N=703) | P value | Corrected P value* | |

Systolic blood pressure at ED admission, median (IQR) | 124.5 (IQR 100–140) | 125 (IQR 115–140) | 0.02 | 0.03 |

Diastolic blood pressure at ED admission, median (IQR) | 70 (IQR 60–80) | 75 (IQR 70–80) | <0.001 | 0.005 |

Heart rate at ED admission, median (IQR) | 89 (IQR 80–102) | 90 (IQR 80–100) | 0.68 | 0.68 |

Respiratory rate at ED admission, median (IQR) | 30 (IQR 24–35.7) | 28 (20.5–34.7) | 0.19 | 0.21 |

Leucocytes (ˆ10 000/mmc) at ED admission, median (IQR) | 9.1 (IQR 5.5–11.5) | 6.5 (IQR 4.9–9.3) | <0.001 | 0.004 |

Haemoglobin (g/dL) at ED admission, median (IQR) | 13.1 (IQR 11.4–14.5) | 13.9 (IQR 12.4–14.9) | 0.001 | 0.003 |

Platelets (ˆ1000/mmc) at ED admission, median (IQR) | 217 (IQR 161–317) | 204 (IQR 158–270) | 0.38 | 0.39 |

Urea (mg/dL) at ED admission, median (IQR) | 57 (IQR 37–106) | 33 (IQR 24–48) | <0.001 | 0.003 |

Creatinine (mg/dL) at ED admission, median (IQR) | 1.2 (IQR 0.91–1.83) | 0.96 (IQR 0.78–1.2) | <0.001 | 0.002 |

Na (mEq/L) at ED admission, median (IQR) | 140 (IQR 135.5–143.6) | 137.3 (IQR 134.5–139.5) | <0.001 | 0.002 |

K (mEq/L) at ED admission, median (IQR) | 4.3 (IQR 3.9–4.7) | 4.2 (IQR 3.9–4.5) | 0.16 | 0.19 |

AST (U/L) at ED admission, median (IQR) | 50 (IQR 28.2–96) | 43 (IQR 29–61) | 0.03 | 0.04 |

ALT(U/L) at ED admission, median (IQR) | 28 (IQR 17.25–53) | 35 (IQR 23–54) | 0.03 | 0.04 |

LDH (U/L) at ED admission, median (IQR) | 415 (IQR 282–580) | 352 (IQR 262–449) | 0.001 | 0.002 |

CRP (mg/L) at ED admission, median (IQR) | 92.5 (IQR 47.9–153.5) | 67 (IQR 26.2–122.9) | 0.005 | 0.009 |

pH at ED admission, median (IQR) | 7.46 (IQR 7.41–7.5) | 7.47 (IQR 7.44–7.5) | 0.03 | 0.05 |

PaO_{2}/FiO_{2} at ED admission, median (IQR) | 238 (IQR 151–300) | 300 (IQR 242–342) | <0.001 | 0.002 |

*Benjamini-Hochberg correction. Benjamini-Hochberg corrected p values were calculated by computing p

_{(k)}=m/k for all sorted p values (p=sorted p values; m=total number of sorted p values; k=corresponding rank). Then p values were adjusted from the bigger to the smallest. If the value p_{(k)}=m/k was bigger than the previous adjusted p value, the corresponding corrected p value was equal to the previous one since numbers should not increase.ALT, alanine aminotransferase; AST, aspartate aminotransferase; CRP, C reactive protein; LDH, lactate dehydrogenase; n, number.