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Table 5 Comparison between case and control groups as regards oxygenation (Pao2/Fio2)

From: A comparative study between effect of combined intravenous and nebulized amikacin versus intravenous amikacin alone in mechanically ventilated patients with ventilator-associated pneumonia (VAP)

   Group A Group B A/B^
Before Median (IQR) 164.5
(147.8–229.5)
164.0
(147.0–194.3)
0.570
Range 105.0–400.0 103.0–255.0
After Median (IQR) 191.0
(162.8–230.3)
177.5
(150.0–221.3)
0.279
Range 142.0–402.0 120.0–285.0
Difference Median (IQR) 20.5
(− 6.8–41.5)
24.0
(− 10.0–54.8)
0.797
Range − 30.0–60.0 − 100.0–150.0
p# 0.006* 0.212  
  1. Negative values indicate reduction
  2. Md Median, IQR interquartile range
  3. ^Mann-Whitney test
  4. #Wilcoxon signed rank test
  5. *Significant p value > 0.05 NS; *p value < 0.05 S; **p value < 0.001 H