A brief description of the initially reported psychometric properties of the measure.
There are several version of the PGI. A study sought to provide a structured review of the measure by reviewing the findings from 18 studies, using grading criteria,
adapted from those developed, to aid outcome measure selection for use with older people. The PGI was found to be
adequately reliable for group comparisons and valid, but evidence for responsiveness
was unclear. The authors concluded that versions of the measure that use fewer points in their Likert scales may have higher reliability. https://www.researchgate.net/publication/6535588_Twelve_years'_experience_with_the_Patient_Generated_Index_PGI_of_quality_of_life_A_graded_structured_review