Comorbidities and clinical outcomes in adult- and juvenile-onset Huntington's disease: a study of linked Swedish National Registries (2002-2019).

Background: Huntington's disease (HD) is a rare, neurodegenerative disease and its complex motor, cognitive and psychiatric symptoms exert a lifelong clinical burden on both patients and their families.

Objective: To describe the clinical burden and natural history of HD.

Methods: This longitudinal cohort study used data from the linked Swedish national registries to describe the occurrence of comorbidities (acute and chronic), symptomatic treatments and mortality in an incident cohort of individuals who either received the first diagnosis of HD above (adult onset HD; AoHD) or below (juvenile-onset HD; JoHD) 20 years of age, compared with a matched cohort without HD from the general population.

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

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.

Can the Positive and Negative Syndrome scale (PANSS) differentiate treatment-resistant from non-treatment-resistant schizophrenia? A factor analytic investigation based on data from the Pattern cohort study.

Treatment-Resistant Schizophrenia (TRS) and Non-Treatment-Resistant Schizophrenia (NTRS) may represent different subtypes of schizophrenia. However, few studies have investigated their PANSS symptom dimensions by Exploratory (EFA) or Confirmatory (CFA). Data from the present study are derived from 1429 patients of the Pattern study.

Health-related quality of life associated with different symptoms in women and in men who suffer from schizophrenia.

Health-related quality of life (HRQoL) in patients with schizophrenia is related to the severity of psychiatric symptoms. The objective of this study is to analyze whether the symptoms that influence HRQoL are similar in women and men. Data were part of the Pattern study, an international observational investigation which collected data from 1379 outpatients with schizophrenia.

Understanding the course of persistent symptoms in schizophrenia: Longitudinal findings from the pattern study.

The Pattern study was conducted to provide longitudinal observational data for individual patients with persistent symptoms of schizophrenia. Pattern is an international, multicenter, non-interventional, prospective cohort study of schizophrenia outpatients who were not considered to be in recovery. In the longitudinal phase reported herein, patients were assessed over 1 year using different clinical rating scales.

Health-related quality of life in outpatients with schizophrenia: factors that determine changes over time.

Purpose: The objective of this study was to analyze the clinical factors associated with changes in HRQoL in outpatients with schizophrenia using both generic and condition-specific HRQoL scales.

Methods: Adult outpatients with schizophrenia at least 18 years of age who did not have an acute psychotic exacerbation in the 3 months prior to baseline were recruited. PANSS dimensions were calculated based on Lindenmayer et al.

Burden of illness of people with persistent symptoms of schizophrenia: A multinational cross-sectional study.

Background: Few studies have examined the impact of persistent symptoms of schizophrenia, especially with respect to patient-reported outcomes (PROs), carer burden and health economic impact.

Aims: Analyse data relating to burden and severity of illness, functional impairment and quality of life for patients with persistent symptoms of schizophrenia.

Methods: A cohort of stable outpatients with persistent symptoms of schizophrenia across seven countries were assessed in a multicentre, non-interventional, cross-sectional survey and retrospective medical record review using PRO questionnaires, clinical rating scales and carer questionnaires.

Understanding the impact of persistent symptoms in schizophrenia: Cross-sectional findings from the Pattern study.

Background: The high societal burden of schizophrenia is largely caused by the persistence of symptoms and accompanying functional impairment. To date, no studies have specifically assessed the course of persistent symptoms or the individual contributions of positive and negative symptoms to patient functioning. The cross-sectional analysis of the Pattern study provides an international perspective of the burden of schizophrenia.

Defining therapeutic benefit for people with schizophrenia: focus on negative symptoms.

Schizophrenia is a complex, heterogeneous, multidimensional disorder within which negative symptoms are a significant and disabling feature. Whilst there is no established treatment for these symptoms, some pharmacological and psychosocial interventions have shown promise and this is an active area of research. Despite the effort to identify effective interventions, as yet there is no broadly accepted definition of therapeutic success.