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Comparison of mean cortisol levels among study subjects before and after N2O IHS
| Mean | Standard deviation | Standard error mean | ||
|---|---|---|---|---|
| Cortisol | Before N2O IHS | 2.0525 | 1.34953 | 1.06179 |
| After N2O IHS | 0.84744 | 0.427305 | 0.075537 | |
| Difference | 1.21 | 0.862 | ||
| p-value | <0.0001* | |||
Wilcoxon sum-rank test; significant differences were seen in cortisol levels before and after N2O inhalation when compared using the Wilcoxon sum-rank test as p < 0.05
