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Coste-efectividad de un programa de actividad fisica de tiempo libre para prevenir el sobrepeso y la obesidad en ninos de 9 a 10 anos (Cost-effectiveness of an intervention to reduce overweight and obesity in 9- to 10-year-olds. The Cuenca study) [Spanish]
Moya Martinez P, Sanchez Lopez M, Lopez Bastida J, Escribano Sotos F, Notario Pacheco B, Salcedo Aguilar F, Martinez Vizcaino V
Gaceta Sanitaria 2011 May-Jun;25(3):198-204
clinical trial
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

OBJECTIVE: To assess the cost-effectiveness a school-based intervention designed to reduce overweight/obesity and other cardiovascular risk factors in children. METHODS: Standard cost effectiveness analysis methods and two perspectives (societal and institutional) were used. A cluster-randomized controlled trial with 10 intervention schools (691 children) and 10 control schools (718 children) was performed. Net costs were calculated by subtracting the usual after-school care cost from intervention costs. The effectiveness of the intervention was measured as the reduction in health outcomes compared with the control group. RESULTS: The intervention costs totaled 125,469.75, representing 269.83 /year/child. The usual after-school care was estimated at 844,56 /year/child. Intervention children showed a decrease in triceps skinfold thickness (-1.25mm, 95% CI -1.82 to -0.67; p < 0.001). Intervention children with body mass index (BMI) between the percentiles 25 and 75 showed a decrease in the percentage of body fat (-0.59%; 95% CI -1.03 to -0.67; p < 0.001), and those with a BMI > P75 showed a decrease in triceps skinfold thickness (-1.87mm; 95%CI -3.43 to -0.32; p < 0.001), and percentage of body fat (-0.67%; 95%CI -1.32 to -0.01; p < 0.05). CONCLUSIONS: This type of after-school program for recreational physical activity to prevent obesity are likely to be a cost-effective use of public funds and warrant careful consideration by policy makers and program planners.

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