Table 3. Regression analysis for factors associated with increasing severity of DES.

Variables	Adjusted for sex, contact lens wear, duration of VDT use and stress score
	Odds ratio (95%CI)	P-value
Female	0.672 (0.449–1.004)	0.052
Contact lens wear	0.287 (0.134–0.615)	0.001
Duration of VDT use per day (hr)	1.027 (0.961–1.097)	0.431
T-PSS-10 (score)	1.113 (1.074–1.154)	< 0.001

Abbreviation: CI = confident interval.