Table 6.

Summary of the mean frequency of artificial tears use between LCD and placebo groups

Visit	LCD (N = 15)	Placebo (N = 20)		P-value by Kruskal–Wallis test for LCD vs. placebo
	Mean (%)	Mean (%)
Day 0–14	2.47 (100.0)	2.65 (100.0)		0.2851
Day 15–28	1.07 (43.24)	2.45 (92.45)		0.0009**
Day 29–56	0.73 (29.73)	2.60 (98.11)		< 0.0001**

N number of subjects in specified treatment

*P < 0.05

**P < 0.01