Sociodemographic, ethnic and dietary factors associated with childhood obesity in Thessaloniki, Northern Greece.

OBJECTIVE To investigate sociodemographic, ethnic and dietary factors associated with the development of childhood obesity. DESIGN 276 children, aged 8-12 years, randomly selected from seven schools in Thessaloniki, Northern Greece, participated in the study. 13% of the children were immigrants from neighboring Balkan countries and ex-Soviet Union countries. Data was collected using specific validated questionnaires. Anthropometric measurements, dietary intake and physical activity assessment were carried out for all children. RESULTS 26.1% of the boys and 22.4% of the girls were overweight and a further 11.6% of boys and 10.9% of girls were obese. The overweight and obesity rate was significantly lower in immigrants (10% and 3.3%) compared to Greeks (25.8% and 12.7%), p=0.024. Obese children compared to their non-obese counterparts a) had parents who were obese at a higher percentage (p=0.001), b) reported that food preparation was carried out by their grandmother (p=0.006) and c) had less pocket money (p=0.004). Daily energy and carbohydrate intakes were significantly higher in immigrants compared to Greeks (1611+/-599Kcal vs 1363+/-471Kcal, p=0.036 and 188.31+/-70.63g vs 149.87+/-56.41g, p=0.001) and the same was true for exercise (6.38+/-7.22 h/w vs 4.14+/-4.18 h/w, p=0.049). CONCLUSIONS In planning interventions for childhood obesity, sociodemographic factors in addition to food intake and physical activity patterns have to be considered.