Association of Negative Symptoms of Schizophrenia Assessed by the BNSS and SNS Scales With Neuropsychological Performance: A Gender Effect.

The relationship between negative symptoms and neurocognitive performance in schizophrenia is well documented, but the mechanism of these connections remains unclear. The study aims to measure the relationship between the results on the new scales for the assessment of negative symptoms such as Brief Negative Symptom Scale (BNSS) and Self-evaluation of Negative Symptoms (SNS), and the results of some neurocognition tests. The second aim is to assess a possible gender effect on these associations.

Gender, age at onset, and duration of being ill as predictors for the long-term course and outcome of schizophrenia: an international multicenter study.

Background: The aim of the current study was to explore the effect of gender, age at onset, and duration on the long-term course of schizophrenia.

Methods: Twenty-nine centers from 25 countries representing all continents participated in the study that included 2358 patients aged 37.21 ± 11.

Metabolic indices in schizophrenia: Association of negative symptoms with higher HDL cholesterol in female patients.

Objectives: Negative symptoms of schizophrenia can be related to metabolic abnormalities. The study aimed to assess negative symptoms using the Positive and Negative Syndrome Scale (PANSS) and the Brief Negative Symptoms Scale (BNSS), and their relationship with body mass index (BMI) and lipid indices, in male and female schizophrenic patients.

Methods: Fifty chronic schizophrenia patients (29 males, 21 females) were included.

Negative symptoms in schizophrenia, assessed by the brief negative symptom scale, self-evaluation of negative symptom scale, and social cognition: a gender effect.

Objective: Negative symptoms of schizophrenia can be related to social cognition. The aim was to measure a relationship between the results on the new scales for the assessment of negative symptoms such as the Brief Negative Symptom Scale (BNSS) and Self-evaluation of Negative Symptoms (SNS), and the measures of social cognition.

Methods: The study included 80 patients (40 men, 40 women) with schizophrenia, aged 19-63 (mean 38 years), during the improvement period.

Modeling psychological function in patients with schizophrenia with the PANSS: an international multi-center study.

Background: The aim of the current study was to explore the changing interrelationships among clinical variables through the stages of schizophrenia in order to assemble a comprehensive and meaningful disease model.

Methods: Twenty-nine centers from 25 countries participated and included 2358 patients aged 37.21 ± 11.

Staging of Schizophrenia With the Use of PANSS: An International Multi-Center Study.

Introduction: A specific clinically relevant staging model for schizophrenia has not yet been developed. The aim of the current study was to evaluate the factor structure of the PANSS and develop such a staging method.

Methods: Twenty-nine centers from 25 countries contributed 2358 patients aged 37.

Polish version of the Self-evaluation of Negative Symptoms (SNS).

Objectives: The aim of the study was to create a Polish version of the Self-evaluation of NegativeSymptoms (SNS) scale, to assess its internal consistency, and to make correlations between the SNS scores and the Brief Negative Symptom Scale (BNSS) scores in the group of patients with schizophrenia.

Material And Methods: The procedure of Polish adaptation of the French-language version of the SNS scale, comprising 20 items organized in 5 subscales: asociality, blunted affect, alogia, avolition and anhedonia, was carried out. Psychometric tests were performed in 40 patients with paranoid schizophrenia (20 men and 20 women) with severity of symptoms on the Positive and Negative Syndrome Scale (PANSS) 56±16 points, receiving unchanged pharmacological treatment in the last 3 months.

Polish version of the Brief Negative Symptom Scale (BNSS).

Objectives: To create a Polish adaptation of the Brief Negative Symptom Scale (BNSS), to assess the internal consistency of the Polish version of the BNSS, and to make correlations between the BNSS scores and the Positive and Negative Syndrome Scale (PANSS) in the group of patients with schizophrenia.

Methods: The procedure of Polish adaptation of the assessment form (Scoresheet) of the BNSS, comprising 13 items organized in 6 subscales (anhedonia, lack of proper distress, asociality, avolition, blunted affect, and alogia), as well as the Manual and the Workbook of the scale was carried out. Psychometric tests were performed in 40 patients with paranoid schizophrenia (20 men and 20 women), aged 44±13 years, with illness duration of 17±10 years, and severity of symptoms on the PANSS 56±16 points, receiving unchanged pharmacological treatment in the last three months.