Medscape

Item Response Analysis of the Positive and Negative Syndrome Scale

Data included baseline PANSS item scores from 9,205 patients with schizophrenia, schizoaffective, or schizophreniform disorders who were enrolled between 1995 and 2003 in either a large, naturalistic, ...
JSTOR Daily

Development and validation of a self-rating scale for positive- and negative-reinforcement smoking: The Michigan Nicotine Reinforcement Questionnaire

Positive- and negative-reinforcement consequences of smoking were assessed using a self-report inventory. Data from 429 current smokers (348 women, 81 men) were subjected to an exploratory factor ...
ascopubs.org

Primary CNS lymphoma in HIV-positive and -negative patients: Comparison of clinical characteristics, outcome, and prognostic factors.

Recurrent spinal cord glioblastoma: Salvage therapy with bevacizumab. Background: Primary central nervous system lymphoma (PCNSL) accounts for approximately 4% of all primary brain tumors and has a ...
Medscape

Item Response Analysis of the Positive and Negative Syndrome Scale

Background: Statistical models based on item response theory were used to examine (a) the performance of individual Positive and Negative Syndrome Scale (PANSS) items and their options, (b) the ...