Correlation of Health-Related Quality of Life in Clinically Stable Outpatients with Schizophrenia

Cristina Domenech, Adriana Pastore, A Carlo Altamura, Corrado Bernasconi, Ricardo Corral, Helio Elkis, Jonathan Evans, Ashok Malla, Francesco Margari, Marie-Odile Krebs, Anna-Lena Nordstroem, Mathias Zink, Josep Maria Haro

Research output: Contribution to journalArticle (Academic Journal)

Abstract

Background: Generic health-related quality of life (HRQoL) scales are increasingly being used to assess the effects of new treatments in schizophrenia. The objective of this study is to better understand the usefulness of generic and condition specific HRQoL scales in schizophrenia by analyzing their correlates.

Methods: Data formed part of the Pattern study, an international observational study among 1379 outpatients with schizophrenia. Patients were evaluated with the Mini International Neuropsychiatric Inventory, the Clinical Global Impression-Schizophrenia (CGI-SCH) Scale and the Positive and Negative Syndrome Scale (PANSS) and reported their HRQoL using the Schizophrenia Quality of Life Scale (SQLS), the Short Form-36 (SF-36), and the EuroQol-5 Dimension (EQ-5D). The two summary values of the SF-36 (the Mental Component Score and the Physical Component Score, SF-36 MCS and SF-36 PCS) were calculated.

Results: Higher PANSS positive dimension ratings were associated with worse HRQoL for the SQLS, EQ-5D VAS, SF-36 MCS, and SF-36 PCS. Higher PANSS negative dimension ratings were associated with worse HRQoL for the EQ-5D VAS, SF-36 MCS, and SF-36 PCS, but not for the SQLS or the EQ-5D tariff. PANSS depression ratings were associated with lower HRQoL in all the scales. There was a high correlation between the HRQoL scales. However, in patients with more severe cognitive/disorganized PANSS symptoms, the SQLS score was relatively higher than the EQ-5D tariff and SF-36 PCS scores.

Conclusion: This study has shown substantial agreement between three HRQoL scales, being either generic or condition specific. This supports the use of generic HRQoL measures in schizophrenia.

Clinicaltrialsgov identifier: NCT01634542 (July 6, 2012, retrospectively registered).

Original languageEnglish
Pages (from-to)3475-3486
Number of pages12
JournalNeuropsychiatric Disease and Treatment
Volume15
DOIs
Publication statusPublished - 20 Dec 2019

Bibliographical note

© 2019 Domenech et al.

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    Domenech, C., Pastore, A., Altamura, A. C., Bernasconi, C., Corral, R., Elkis, H., Evans, J., Malla, A., Margari, F., Krebs, M-O., Nordstroem, A-L., Zink, M., & Haro, J. M. (2019). Correlation of Health-Related Quality of Life in Clinically Stable Outpatients with Schizophrenia. Neuropsychiatric Disease and Treatment, 15, 3475-3486. https://doi.org/10.2147/NDT.S218578