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http://hdl.handle.net/2445/135617
Title: | Inverse association between negative symptoms and body mass index in chronic schizophrenia |
Author: | Mezquida Mateos, Gisela Savullich, George García Álvarez, Leticia Bobes García, Julio Mané Santacana, Anna Bernardo Arroyo, Miquel Fernández Egea, Emilio García Rizo, Clemente García-Portilla González, María Paz, 1962- Toll Privat, Alba |
Keywords: | Esquizofrènia Pes corporal Símptomes Schizophrenia Body weight Symptoms |
Issue Date: | Feb-2018 |
Publisher: | Elsevier B.V. |
Abstract: | BACKGROUND: We investigated whether negative symptoms, such as poor motivation or anhedonia, were associated with higher body mass index (BMI) in stable patients with schizophrenia chronically treated with antipsychotic medication. METHODS: 62 olanzapine- or clozapine-treated patients with illness duration of at least four years were selected from an international multicenter study on the characterization of negative symptoms. All participants completed the Brief Negative Symptom Scale (BNSS) and the Positive and Negative Syndrome Scale (PANSS). Bivariate correlations between BMI and negative symptoms (BNSS) were explored, as well as multiple regression analyses. We further explored the association of two principal component factors of the BNSS and BMI. Subsidiary analyses re-modeled the above using the negative symptoms subscale of the PANSS and the EMSLEY factor for negative symptoms for convergent validity. RESULTS: Lower negative symptoms (BNSS score) were associated with higher BMI (r=-0.31; p=0.015). A multiple regression analysis showed that negative symptoms (BNSS score) and age were significant predictors of BMI (p=0.037). This was mostly driven by the motivation/pleasure factor of the BNSS. Within this second factor, BMI was negatively associated with anhedonia (r=-0.254; p=0.046) and asociality (r=-0.253; p=0.048), but not avolition (r=-0.169; p=0.188). EMSLEY score was positively associated with BNSS (r=0.873, p<0.001), but negatively associated with BMI (r=-0.308; p=0.015). The association between PANSS and BMI did not reach significance (r=-224, p=0.080). CONCLUSIONS: We conclude that lower negative symptoms were associated with higher BMI (assessed using both the BNSS and EMSLEY) in chronic stable schizophrenia patients, mostly due to lower anhedonia and asociality levels. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.schres.2017.04.002 |
It is part of: | Schizophrenia Research, 2018, vol. 192, p. 69-74 |
URI: | http://hdl.handle.net/2445/135617 |
Related resource: | https://doi.org/10.1016/j.schres.2017.04.002 |
ISSN: | 0920-9964 |
Appears in Collections: | Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer) Articles publicats en revistes (Medicina) |
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