Table 3 HADS in the three intervention groups at different times

2h

11.84 ± 6.09^*

15.57 ± 2.25

15.13 ± 3.04

0.001

6h

8.63 ± 4.36^**

10.75 ± 2.27

10.62 ± 1.87

0.010

24h

6.30 ± 3.45

7.66 ± 2.07

7.89 ± 3.05

0.066

Scores are reported as mean ± SD.

*: Melatonin is different with dexmedetomidine (P = 0.001) and gabapentin (P = 0.007).

**: Melatonin is different with dexmedetomidine (P = 0.017) and gabapentin (P = 0.035).