The eye-complaint questionnaire in a visual display unit work environment: internal consistency and test-retest reliability.

@article{Steenstra2009TheEQ,
  title={The eye-complaint questionnaire in a visual display unit work environment: internal consistency and test-retest reliability.},
  author={Ivan A Steenstra and Judith K. Sluiter and Monique H. W. Frings-Dresen},
  journal={Ergonomics},
  year={2009},
  volume={52 3},
  pages={334-44}
}
The internal consistency and test-retest reliability of a 10-item eye-complaint questionnaire (ECQ) were examined within a sample of office workers. Repeated within-subjects measures were performed within a single day and over intervals of 1 and 7 d. Questionnaires were completed by 96 workers (70% female, mean age 36.4 years) who perform more than 4 h of visual display unit work each day. The internal consistency of the ECQ was high (alpha = 0.801). Although test-retest reliability was low… CONTINUE READING