Table 4.

Correlations between meibomian gland dropout and clinical parameters

Variables	All group		Young group (n = 77)		Middle-aged group (n = 52)		Older group (n = 80)
	r	P	r	P	r	P	r	P
OSDI score	0.077	0.270	0.196	0.088	0.122	0.388	0.021	0.2854
Lid margin abnormality	0.019	0.783	−0.060	0.606	0.229	0.102	−0.013	0.905
MGE score	−0.133	0.045	−0.014	0.903	−0.193	0.171	−0.192	0.088
Schirmer’s I test (mm)	0.027	0.694	0.046	0.692	−0.099	0.487	0.078	0.493
ITBUT (sec)	0.009	0.894	0.054	0.644	−0.043	0.765	0.015	0.894
CFS score	0.110	0.112	−0.028	0.810	0.251	0.072	0.135	0.233
NITBUT (sec)	0.035	0.614	0.059	0.610	−0.188	0.183	0.136	0.228
Central TMH (mm)	0.009	0.899	0.120	0.300	0.076	0.594	−0.092	0.415

OSDI Ocular surface disease index; LLT Lipid layer thickness; MGE Meibomian gland evaluator, ITBUT Invasive tear break-up time; CFS Corneal fluorescein staining; NITBUT Non-invasive tear break-up time; TMH Tear meniscus height

Significant data are in bold face