Table 1. Characteristics of study population.
Variable | Estimate* |
Age (years) | 35.6±10.1 |
Gender (male) (%) | 335/601 (56) |
VDT working year (years) | 8.2±5.7 |
Daily VDT hour (hours) | 5.1±2.7 |
BUT (sec) | 5.7±2.7 |
DR-1 grade | 2.3±0.5 |
Schirmer score (mm/min) | 19.7±10.2 |
*Values represent mean ± standard deviation.