2 research outputs found
Reliability and validity of body weight and body image perception in children and adolescents from the South American Youth/Child Cardiovascular and Environmental (SAYCARE) Study
Objective: To assess the reliability and validity of body weight (BW) and body image (BI) perception reported by parents (in children) and by adolescents in a South American population.
Design: Cross-sectional study. BW perception was evaluated by the question, "Do you think you/your child are/is: severely wasted, wasted, normal weight, overweight, obese?" BI perception was evaluated using the Gardner scale. To evaluate reliability, BW and BI perceptions were reported twice, two weeks apart. To evaluate validity, the BW and BI perceptions were compared with WHO BMI Z-scores. Kappa and Kendall's tau-c coefficients were obtained.
Setting: Public and private schools and high schools from six countries of South America (Argentina, Peru, Colombia, Uruguay, Chile, Brazil).
Participants: Children aged 3-10 years (n 635) and adolescents aged 11-17 years (n 400).
Results: Reliability of BW perception was fair in children's parents (k=0路337) and substantial in adolescents (k=0路709). Validity of BW perception was slight in children's parents (k=0路176) and fair in adolescents (k=0路268). When evaluating BI, most children were perceived by parents as having lower weight. Reliability of BI perception was slight in children's parents (k=0路124) and moderate in adolescents (k=0路599). Validity of BI perception was poor in children's parents (k=-0路018) and slight in adolescents (k=0路023).
Conclusions: Reliability of BW and BI perceptions was higher in adolescents than in children's parents. Validity of BW perception was good among the parents of the children and adolescents with underweight and normal weight
Comparaci贸n entre variables antropom茅tricas auto reportadas y mediciones reales
El objetivo de este estudio fue valorar el autoreporte de peso, estatura y per铆metro de cintura, y comparar dicha percepci贸n con los valores reales en estudiantes universitarios participantes de la Cohorte MESPYN, -Medell铆n, Salud P煤blica y Nutrici贸n- de la Universidad de Antioquia (UdeA) - Colombia. Se realiz贸 un estudio transversal a partir de la primera medici贸n de la Cohorte MESPYN 2009-2010. La muestra incluy贸 estudiantes voluntarios de las diferentes 谩reas acad茅micas. La autovaloraci贸n de peso, estatura y per铆metro de cintura se registr贸 antes de la toma de los datos reales. Se calcularon coeficientes de correlaci贸n intraclase (CCI) para todas las variables (伪=0,05); la concordancia entre medidas reales y autoreferidas se valor贸 seg煤n el m茅todo de Bland y Altman. Se incluyeron 424 estudiantes voluntarios. El peso promedio real de hombres (kg) fue 67,4卤10,4 y autoreportado: 67,0卤11,0; en mujeres el valor real: 55,7卤10,1 y autoreportado: 55,0卤9,0. La estatura promedio real (m) en hombres fue 1,73卤6,1 y autoreportada: 1,73卤6,0; en mujeres el valor real: 1,60卤5,9 y autoreportado: 1,61卤6,0. En hombres el per铆metro de cintura promedio real (cm) fue 76,6卤8,0 y autoreportado: 75,0卤14,0; en mujeres el valor real: 69,9卤8,0 y autoreportado: 70,0卤9,0. El CCI para peso: 0,956, IC95% (0,95; 0,97), (p<0,01); CCI para estatura: 0,953, IC95% (0,91; 0,97), (p<0,01) y CCI para per铆metro de cintura: 0,593, IC95% (0,55; 0,65), (p<0,01). En conclusi贸n, la evaluaci贸n nutricional antropom茅trica de estudiantes de la UdeA puede realizarse por datos autoreportados para peso y estatura, pero la evaluaci贸n de obesidad abdominal requiere la toma directa del per铆metro de cintura