Translation and Validation of the Tagalog Trust in Ophthalmologist Scale

Daphne Viel Cruzat-Tsuru, MD; Jose Ma. D.  Martinez, MD, MBA

Authors

Daphne Viel Cruzat-Tsuru, MD Department of Health Eye Center, East Avenue Medical Center, Quezon City Author
Jose Ma. D. Martinez, MD, MBA Department of Health Eye Center, East Avenue Medical Center, Quezon City Author

Keywords:

Trust scale, trust in ophthalmologist, patients’ trust, questionnaire validation, patient-physician relationship

Abstract

Objective: This study adapted and translated the Trust in Oncologist Scale (TiOS) into the Tagalog Trust in Ophthalmologist Scale (TTOS) and validated the latter.

Methods: The 18-item TiOS questionnaire was translated into Tagalog and validated in a cohort of 200 Filipino ophthalmology patients of a single institution. Internal consistency, construct validity, and test-retest reliabilities were determined. Exploratory factor analyses were also performed.

Results: The TTOS showed high internal consistency with Cronbach alpha of 0.92, high reliability with Pearson's coefficient of 0.85, and high validity with Spearman’s coefficient of 0.67.

Conclusion: The TTOS is a valid and reliable tool to measure the level of trust of Filipino patients in their ophthalmologists.