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20.03.2023 | Publication

PARADISE 24: a measure to assess the impact of brain disorders on people’s lives

Julkaisun nimi:

PARADISE 24: a measure to assess the impact of brain disorders on people’s lives


Cieza, A. Sabariego, C. Anczewska, M. Ballert, C. Bickenbach, J. Cabello, M. Giovannetti, A. Kaskela, T. Mellor, B. Pitkanen, T. Quintas, R. Raggi, A. Świtaj, P. Chatterji, S.


To understand the true impact of brain disorders on a person’s life, it is essential to collect information directly from people with such disorders. There is, however, no direct measure or metric that captures the impact of brain disorders on people’s lives and based on which comparisons across brain disorders are possible.







Julkaisun tiedot:

Plos One 10(7), e0132410. doi:10.1371/journal.pone.0132410

Lyhyt kuvaus:

Objective of the study was to construct a metric of the impact of brain disorders on people’s lives, based on the psychosocial difficulties (PSDs) that are experienced in common across brain disorders.

The study is psychometric using data from a cross-sectional study with a convenience sample of 722 persons with 9 different brain disorders interviewed in four European countries: Italy, Poland, Spain and Finland. Questions addressing 64 PSDs were first reduced based on statistical considerations, patient’s perspective and clinical expertise. Rasch analyses for polytomous data were also applied.

As a result a valid and reliable metric with 24 items was created. The infit of all questions ranged between 0.7 and 1.3. There were no disordered thresholds. The targeting between item thresholds and persons’ abilities was good and the person-separation index was 0.92. Persons’ abilities were linearly transformed into a more intuitive scale ranging from zero (no PSDs) to 100 (extreme PSDs).

The metric, called PARADISE 24, is based on the hypothesis of horizontal epidemiology, which affirms that people with brain disorders commonly experience PSDs. This metric is a useful tool to carry out cardinal comparisons over time of the magnitude of the psychosocial impact of brain disorders and between persons and groups in clinical practice and research.

Keywords: brain disorders, psychosocial difficulties, PARADISE 24

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