Penn State Worry Questionnaire-11 validity in Colombia and factorial equivalence across gender and nonclinical and clinical samples

Validation of the PSWQ-11 in Colombia (N=1,045; 710 non-clinical, 335 clinical). The 11-item version showed excellent internal consistency, acceptable unidimensional model fit, and metric and scalar invariance by sex and sample type. Concludes that the PSWQ-11 is valid for assessing GAD-related worry in Colombian populations.