Table 4.

Correlation Between Tear Function Tests and Ocular Surface Parameters

	ST		SM
Characteristic	β	P Value	β	P Value
Linear regression analysis
Age	–0.229 (–0.361 to –0.097)	0.001	–0.065 (–0.201 to 0.071)	0.336
Sex	–0.067 (–0.201 to 0.067)	0.339	0.062 (–0.074 to 0.198)	0.360
Ocular surface parameter
BUT	–0.026 (–0.163 to 0.111)	0.717	0.149 (0.012 to 0.286)	0.031
Corneal staining score	–0.076 (–0.207 to 0.055)	0.272	–0.050 (–0.183 to 0.083)	0.460
ST	—	—	0.255 (0.118 to 0.392)	<0.001
SM	0.255 (0.122 to 0.388)	<0.001a	—	—
Multiple regression analysis
Age	–0.201 (–0.333 to –0.069)	0.003	–0.060 (–0.196 to 0.075)	0.383
Sex	–0.066 (–0.200 to 0.067)	0.329	–0.008 (–0.144 to 0.128)	0.906
BUT	–0.099 (–0.236 to 0.037)	0.154	0.191 (0.054 to 0.328)	0.006
Corneal staining score	–0.060 (–0.191 to 0.070)	0.363	0.019 (–0.113 to 0.152)	0.768
ST	—	—	0.228 (0.092 to 0.365)	0.001
SM	0.223 (0.090 to 0.355)	0.001	—	—

The 95% confidence interval is in parentheses.

^aP < 0.05, standardized partial regression coefficient.