Psychometric analysis and adaptation of the generalized anxiety questionnaire (GAD-7) to the Collao Quechua language in Peru.

Motivation for the study. Peru has the largest Quechua population; however, the measurement of anxiety is not validated in the cultural and linguistic context of the Collao Quechua variety mainly spoken in Puno. Main findings. The adaptation of the 7-item Generalized Anxiety Questionnaire (GAD-7) to Collao Quechua reported adequate internal validity, invariance, and optimal reliability. Implications. The GAD-7 adapted to Collao Quechua could be implemented in primary health care for screening for generalized anxiety symptoms.