Table 1. Baseline characteristics of the study subjects.

	Total	Group 1	Group 2	p-value*
Number of patients (eyes)	60 (120)	33 (66)	27 (54)
Age	57.52 ± 10.50	58.00 ± 10.73	56.93 ± 10.38	0.845
Sex (male:female)	19:41	10:23	9:18	1.000
Meibograde	2.04 ± 1.10	2.19 ± 1.11	1.87 ± 1.06	0.165
BUT	4.39 ± 1.50	4.02 ± 1.75	4.60 ± 1.32	0.397
Oxford Grade	1.46 ± 0.62	1.42 ± 0.59	1.50 ± 0.67	0.608
MGE	1.95 ± 0.85	1.97 ± 0.77	1.93 ± 0.95	0.837
MQ	2.09 ± 0.56	2.08 ± 0.61	2.11 ± 0.50	0.864
OSDI	61.41 ± 20.85	58.86 ± 19.88	64.92 ± 21.88	0.067

Numerical continuous parameters were described as means ± standard deviations, and categorical parameters were described as total numbers.

BUT = tear film break up time; MGE = meibomian gland expressibility score; MQ = meibum quality score; OSDI = Ocular Surface Disease Index.

*p-values were obtained using the Wilcoxon rank-sum test for continuous data and the Fisher’s exact test for categorical data.