Table 2.

VAS score for OD during the study

	Lavender group	Control group	p value⃰
Baseline	6.86±3.04	5.3±3.45	0.11
Week 1	3.43±3.67	2.21±2.43	0.413
Week 2	2.26±3.55	1.65±3.24	0.364
Week 3	0.26±0.86	1±3.24	0.293
Changesα from baseline to week 3	6.6±2.93	4.3±4.07	0.036
p value**	<0.001	<0.001
Week 2 ɣ	0.43±2.08	0.4±1.78	0.947
Week 4 ɣ	0.43±2.08	0.3±1.34	0.947
Changesβ from baseline to month 1 ɣ	6.43±3.24	5±3.27	0.136
p value**	<0.001	<0.001

*: U Mann-Whitney test, **: Friedman test, ^ɣ: after discontinuing the intervention, α: VAS at 3^rd week–VAS at baseline, β: VAS at 1^st month–VAS at baseline.