Photobiomodulation versus corticosteroid in the management of erosive oral lichen planus: a randomized controlled clinical trial

Table 1 The changes in VAS between the three studied periods

VAS^a	Baseline	After 6 Weeks	After 12 Weeks	Fr^b	p
Photobiomodulation group (n = 22)
Min. – Max	5.0 – 9.0	3.0 – 5.0	0.0 – 3.0	44.0	< 0.001
Mean ± SD^c	7.14 ± 1.17	4.27 ± 0.77	1.32 ± 0.84
Median (IQR)^d	7.0(6.0 – 8.0)	4.0(4.0 – 5.0)	1.0(1.0 – 2.0)
Significant between periods	p₁ = 0.00, p₂ < 0.001, p₃ = 0.001^*
Control group (n = 22)
Min. – Max	6.0 – 9.0	3.0 – 7.0	1.0 – 3.0	44.0	< 0.001
Mean ± SD	7.05 ± 0.84	4.64 ± 1.18	1.68 ± 0.65
Median (IQR)	7.0(6.0 – 8.0)	4.0(4.0 – 5.0)	2.0(1.0 – 2.0)
Significant between periods	p₁ = 0.001, p₂ < 0.001, p₃ = 0.001

p1: p value for comparing between Baseline and 6 Weeks
p2: p value for comparing between Baseline and 12 Weeks
p3: p value for comparing between 6 Weeks and After 12 Weeks
Statistically significant difference at p value ≤ 0.05
^*p: p value for comparing between the studied groups
^aVisual analogue scale
^bFr: Friedman test, significant difference between periods was done using Post Hoc Test (Dunn’s)
^cSD Standard deviation
^dIQR Inter quartile range

ISSN: 1472-6831