Table 1.

Profile of pretreatment

	HM group (n=96)	Control group (n=99)	P value
Age (years)	69.0±13.3	69.5±16.2	0.09*
Sex (female/male)	39/57	44/55	0.58†
NIBUT first (sec)	6.72±5.05	6.49±4.89	0.75*
NIBUT average (sec)	9.57±5.52	9.50±5.18	0.93*
Meiboscore	0.71±0.93	0.59±0.94	0.37‡
Tear meniscus height (mm)	0.22±0.08	0.22±0.07	0.19*
Conjunctive hyperemia score	1.23±0.59	1.39±0.73	0.09‡

*unpaired-t test

†chi-square test

‡Mann-Whitney U test

HM, heating eye mask; Meiboscore, obstruction score of the meibomian gland; NIBUT, non-invasive tear break-up time.