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Table 2 Calculated differences in outcome measurements

From: Pulmonary edema and blood volume after aneurysmal subarachnoid hemorrhage: a prospective observational study

  Pulmonary edema   
  Diagnosed n = 17 Not diagnosed n = 85 Mean difference Adjusted mean difference
Blood volume 56.6 66.8 -11.3 -8.0
  (52.3 to 60.8) (64.1 to 69.4) (-16.5 to -6.1) (-14.0 to -2.0)
Cardiac index 2.6 3.2 -0.5 -0.3
  (2.2 to 2.9) (3.1 to 3.4) (-0.9 to -0.1) (-0.7 to 0.1)
Fluid balance +1.6 +1.1 +0.2 +0.1
  (1.0 to 2.2) (0.9 to 1.3) (-0.2 to 0.7) (-0.4 to 0.6)
  1. Presented are mean values with 95% confidence interval of blood volume (ml/kg), cardiac index (L/min/m2), and fluid balance (L/day). Differences between patients with or without pulmonary edema are adjusted for age, weight, and WFNS grade on admission.
  2. n = numbers of patients.