Table 2. Healing rate in the two groups.

Outcome variables	Percentage decrease
	group A(range)	group B (range)
Horizontal diameter
Day 3	4.2 (–226.0–59.2)	9.6 (–136.6–68.4)
Day 7	26.7 (–14.9–100.0)	10.8 (–100.0–100.0)
Day 21	34.6 (–8.9–100.0)	14.3 (–55.0–50.0)
Vertical diameter
Day 3	3.43 (–972.0–35.23)	9.66 (–220.0–85.6)
Day 7	21.3 (–100.0–100.0)	9.67 (–76.4–100.0)
Day 21	22.4 (–100.0–100.0)	10.6(–84.6–54.3)
Area
Day 3	12.1 (–1269.6–68.9)	0.82 (–646.4–86.2)
Day 7	54.0 (–49.8–100.0)	2.89 (–67.4–16.4 )a
Day 21	69.4 (0.0–78.8)	6.8 (–42.5–34.2)a
Perimeter
Day 3	13.9 (–366.85–66.34)	1.4 (–589.7–73.1)
Day 7	33.8 (–47.3–100.0)	3.8 (–37.2–16.9)a
Day 21	49.4 (0.0–76.5)	2.9 (–17.6–32.4)a

^aP<0.05 vs group A (Wilcoxon rank sum test)

Median (n=30)