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Validation of the Patient Generated Index for people with severe mental illness

Maryann Roebuck¹, Tim Aubry¹, Valerie Leclerc¹

¹School of Psychology.

Psychiatric Rehabilitation Journal

|August 5, 2021

Abstract

Objective:

The Patient Generated Index (PGI) is a personalized quality of life (QOL) measure. This secondary analysis examined its psychometric properties with people with severe mental illness.

Methods:

Three hundred and eleven people with severe mental illness participated in structured interviews at baseline, 9 months, and 18 months.

Results:

The PGI captured a range of self-defined life areas. PGI scores were correlated with measures of QOL, hope, and functioning, indicating concurrent (criterion) validity. The correlation with QOL, with the finding that PGI scores were significantly higher for people who were employed (n = 42) versus unemployed (n = 269) and for people without substance use disorder (n = 269) versus those with substance use disorder (n = 42), is indicative of construct validity.

Conclusions And Implications For Practice:

The results support the suitability of the PGI as an idiographic measure for monitoring personalized QOL of people with severe mental illness. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

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