TY - JOUR
T1 - Examination of the validity of the Brief Neurocognitive Assessment (BNA) for schizophrenia
AU - Fervaha, Gagan
AU - Hill, Christina
AU - Agid, Ofer
AU - Takeuchi, Hiroyoshi
AU - Foussias, George
AU - Siddiqui, Ishraq
AU - Kern, Robert S.
AU - Remington, Gary
N1 - Funding Information:
This work was supported, in part, by a Vanier Canada Graduate Scholarship (to G. Fervaha). Funding for the MATRICS initiative was provided through NIMH contract N01MH22006 to the University of California, Los Angeles. These funding sources had no further role in study design, statistical analysis or interpretation of findings; in writing of the manuscript; or in the decision to submit for publication.
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2014/11/18
Y1 - 2014/11/18
N2 - BACKGROUND: Although many comprehensive batteries exist to evaluate the nature and degree of cognitive impairments in patients with schizophrenia, short batteries hold promise for rapidly screening and estimating deficits in global cognition. Recently, the Brief Neurocognitive Assessment (BNA) was established and has been shown to have similar validity and utility to a more comprehensive battery of cognitive tests in evaluating global cognitive impairments in patients with schizophrenia. The present study sought to further establish the validity of the BNA by comparing it with the MATRICS Consensus Cognitive Battery (MCCB). METHODS: One-hundred seventy-six patients with schizophrenia and 300 healthy volunteers participated in the present study. Global cognition was evaluated using the MCCB composite score and estimated using the BNA. To examine practice effects and test-retest reliability, patients were re-assessed after 4weeks. RESULTS: The BNA was highly correlated with global cognition as evaluated by the MCCB in both the schizophrenia (r=0.82) and healthy control samples (r=0.75). Both instruments were similarly sensitive to deficits in global cognition in patients with schizophrenia relative to healthy controls. The BNA also demonstrated high test-retest reliability in patients with schizophrenia (r=0.87), comparable to the level observed with the MCCB (r=0.91). In addition, both the BNA and MCCB showed a similar level of practice effects (both Cohen's d=0.11), and both instruments demonstrated equivalent sensitivities to longitudinal change. Furthermore, scores from the BNA and MCCB were related to symptom severity and functional capacity to a similar degree. CONCLUSIONS: The BNA provides clinicians and researchers with an efficient and reliable means by which to evaluate global neurocognitive impairments in patients with schizophrenia by allowing estimation of performance on a more comprehensive standardized battery.
AB - BACKGROUND: Although many comprehensive batteries exist to evaluate the nature and degree of cognitive impairments in patients with schizophrenia, short batteries hold promise for rapidly screening and estimating deficits in global cognition. Recently, the Brief Neurocognitive Assessment (BNA) was established and has been shown to have similar validity and utility to a more comprehensive battery of cognitive tests in evaluating global cognitive impairments in patients with schizophrenia. The present study sought to further establish the validity of the BNA by comparing it with the MATRICS Consensus Cognitive Battery (MCCB). METHODS: One-hundred seventy-six patients with schizophrenia and 300 healthy volunteers participated in the present study. Global cognition was evaluated using the MCCB composite score and estimated using the BNA. To examine practice effects and test-retest reliability, patients were re-assessed after 4weeks. RESULTS: The BNA was highly correlated with global cognition as evaluated by the MCCB in both the schizophrenia (r=0.82) and healthy control samples (r=0.75). Both instruments were similarly sensitive to deficits in global cognition in patients with schizophrenia relative to healthy controls. The BNA also demonstrated high test-retest reliability in patients with schizophrenia (r=0.87), comparable to the level observed with the MCCB (r=0.91). In addition, both the BNA and MCCB showed a similar level of practice effects (both Cohen's d=0.11), and both instruments demonstrated equivalent sensitivities to longitudinal change. Furthermore, scores from the BNA and MCCB were related to symptom severity and functional capacity to a similar degree. CONCLUSIONS: The BNA provides clinicians and researchers with an efficient and reliable means by which to evaluate global neurocognitive impairments in patients with schizophrenia by allowing estimation of performance on a more comprehensive standardized battery.
KW - Functional competence
KW - Generalized cognitive impairment
KW - Neuropsychological testing
KW - Processing speed
KW - Psychosis
KW - Reliable change index
KW - Working memory
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U2 - 10.1016/j.schres.2015.05.015
DO - 10.1016/j.schres.2015.05.015
M3 - Article
C2 - 26004693
AN - SCOPUS:84942373092
SN - 0920-9964
VL - 166
SP - 304
EP - 309
JO - Schizophrenia Research
JF - Schizophrenia Research
IS - 1-3
ER -
