BACKGROUND: Mixed findings on the neuropsychological sequelae of chemotherapy-only treatment for pediatric acute lymphoblastic leukemia (ALL), without radiation, indicate the need for a comprehensive meta-analytic review. The purpose of the current study was to conduct a meta-analysis assessing neuropsychological and academic functioning differences between children with ALL treated solely with chemotherapy and comparison groups. PROCEDURE: Thirteen articles met inclusion criteria for the meta-analysis and were analyzed using a random effects model, weighted least squares methods. RESULTS: Mean effect sizes were significantly different from zero for multiple domains of intelligence and academic achievement; processing speed; verbal memory; and some aspects of executive functioning and fine motor skills, indicating worse functioning in ALL survivors. Effect sizes for visual-motor skills and visual memory were not significantly different from zero. CONCLUSIONS: Results support the presence of neuropsychological and academic sequelae for ALL survivors treated solely with chemotherapy and highlight the need for ongoing follow-up of children with ALL using a standardized neuropsychological test battery and research methodology. (c) 2008 Wiley-Liss, Inc.
BACKGROUND: Mixed findings on the neuropsychological sequelae of chemotherapy-only treatment for pediatric acute lymphoblastic leukemia (ALL), without radiation, indicate the need for a comprehensive meta-analytic review. The purpose of the current study was to conduct a meta-analysis assessing neuropsychological and academic functioning differences between children with ALL treated solely with chemotherapy and comparison groups. PROCEDURE: Thirteen articles met inclusion criteria for the meta-analysis and were analyzed using a random effects model, weighted least squares methods. RESULTS: Mean effect sizes were significantly different from zero for multiple domains of intelligence and academic achievement; processing speed; verbal memory; and some aspects of executive functioning and fine motor skills, indicating worse functioning in ALL survivors. Effect sizes for visual-motor skills and visual memory were not significantly different from zero. CONCLUSIONS: Results support the presence of neuropsychological and academic sequelae for ALL survivors treated solely with chemotherapy and highlight the need for ongoing follow-up of children with ALL using a standardized neuropsychological test battery and research methodology. (c) 2008 Wiley-Liss, Inc.
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