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Table 2 Comparison of the sleep quality before and after the intervention in study groups

From: Comparing the effect of aromatherapy with peppermint and lavender on the sleep quality of cardiac patients: a randomized controlled trial

  Sleep quality score  
Groups
Peppermint Lavender Control P-value
Intervention Med(IQR#) 95%ci Med (IQR) 95%ci Med (IQR) 95%ci  
Before 15(2) 14.4,15.3 15|(2) 14.3,15.3 14(2) 13.6,14.5 1* $
After 4(2) 3.2,4.7 5(3) 4.1,5. 6 14(5) 11.8,14.4 < 0.001$
P-value < 0.001& < 0.001& 0.275&  
  1. *Non-significant, $ Based on Kruskal-Wallis H test, # Interquartile Range, & Based on Wilcoxon signed-rank test
  2. There was a significant difference between sleep quality scores before and after intervention in each of the lavender and peppermint groups; but in control group, the mean‌ scores of sleep quality before and after intervention were not statistically significant