| Ramsay sedation scale |
| Group O | Group N | Total | ||||
| score | n | % | n | % | n | % | ||
| Anxious or restless or both | 1 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
| Cooperative, orientated and tranquil | 2 | 28 | 62.2 | 0 | 0.0 | 28 | 31.1 | |
| Responding to commands | 3 | 17 | 37.8 | 34 | 75.6 | 51 | 56.7 | |
| Brisk response to stimulus | 4 | 0 | 0.0 | 11 | 24.4 | 11 | 12.2 | |
| Sluggish response to stimulus | 5 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
| No response to stimulus | 6 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
| Total |
| 45 | 100.0 | 45 | 100.0 | 90 | 100.0 | |
| Chi-square | X2 |
| 44.667 | |||||
| P-value |
| <0.001** | ||||||