1.The Filipino adaptation of the glaucoma medication adherence self-efficacy questionnaire
Ian Ben M. Batcagan ; Nilo Vincent dG. FlorCruz II
Philippine Journal of Ophthalmology 2022;47(2):76-81
Objectives:
This study translated the Glaucoma Medication Adherence Self-Efficacy Questionnaire
(GMASQ) and tested the reliability of Filipino-adapted GMASQ.
Methods:
A Filipino-adapted GMASQ was developed using the guidelines recommended for translating a
validated health-related questionnaire into a culturally-adapted one. The methods included: (1) forward
translation, (2) back-translation, (3) review and modification, (4) pre-testing and cognitive interviewing, and (5)
final version testing. The provisional questionnaire was pre-tested on 20 glaucoma patients to determine its
value and correspondence, generating a final forward questionnaire. The final version was administered to 48
patients. Its reliability was determined by computing for the Cronbach’s α for each item, per section, and overall.
An item was removed if the α was <0.7.
Results:
Eleven (11) pre-test subjects (55%) preferred the Filipino-adapted questionnaire, 6 (20%) had no
preference, and 3 (25%) preferred the source questionnaire. The provisional Filipino-adapted GMASQ proved
to be acceptable and with no changes made, the questionnaire was marked as the final version. The medication
adherence self-efficacy scale showed Cronbach’s α of > 0.8 for all items with a section α = 0.84. The eye-drop
technique had an α > 0.7 for each item and a section α = 0.80.
Conclusion
This study provided preliminary evidence of the feasibility, acceptance and reliability of the
Filipino GMASQ.
Glaucoma
;
Medication Adherence
;
Surveys and Questionnaires