Body weight, social competence, and cognitive functioning in survivors of childhood brain tumors.

BACKGROUND: The purpose of the following article was to examine: (a) body mass index (BMI) in survivors of childhood brain tumors; (b) the association of BMI with social competence and cognitive functioning; and (c) congruency in reporting of survivors' social competence by the survivors, parents, and teachers. PROCEDURE: Fifty-four survivors of childhood brain tumors (32 males) 8-18 years participated. BMI-for-age percentiles and BMI Z-scores (SDS) were calculated and survivors were categorized as underweight, normal, overweight, or obese, using established criteria. Informants completed measures of social competence and internalizing behaviors. Survivors also completed a test of self-perception and cognitive functioning (IQ).
RESULTS: Survivors were more underweight (15% vs. 4%), and less overweight (17% vs. 31%) than population norms (chi(2) = 38.62, P < 0.001). Parents perceived lower social competence in survivors that were underweight, had lower verbal IQ, and higher internalizing behaviors (P < 0.05). A significant interaction between BMI-for-age and IQ on self-perception of close friendships suggested that survivors with lower weight and lower IQ perceived having fewer close friendships (P < 0.05). Congruency among the three informants was moderate.
CONCLUSIONS: Survivors of childhood brain tumors are at increased risk for underweight. Underweight status is related to lower parent reported social competence and survivors' self-perception of fewer close friendships in the presence of low IQ. 2010 Wiley-Liss, Inc.