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Comparison of mean salivary amylase levels among study subjects before and after N2O IHS
| Mean | Standard deviation | Standard error mean | ||
|---|---|---|---|---|
| Salivary Amylase levels | Before N2O IHS | 13.438 | 3.7238 | 0.6583 |
| After N2O IHS | 8.281 | 5.1508 | 0.9106 | |
| Difference | 5.1 | 5.2 | ||
| p-value | <0.0001* | |||
Wilcoxon sum-rank test; salivary amylase level significantly reduced after N2O inhalation when compared using the Wilcoxon sum-rank test as p < 0.05
