Group A

Group B

Group C

P value between

groups

Cumulative

P value

Duration of ventilation in minutes

199.6 ± 723.59

91.17 ± 43.85

436.37 ± 705.51

0.80*

0.36†

0.026 ‡

0.03

Duration of icu

stay in days

3.7 ± 2.8

2.73 ± 0.69

4.33 ± 0.92

0.11*

0.52†

0.03‡

0.003

VIS score

8.47 ± 4.65

5.50 ± 2.57

9.57 ± 3.89

0.01*

0.70†

0.001‡

0.001

Rescue analgesia (fentanyl) requirement in mcgs

22.6 ± 15.42

7.50 ± 7.39

75.83 ± 13.83

0.001*

0.001†

0.001‡

0.001