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Undernutrition is a frequent manifestation and an important health problem. The aim of this study was to analyse the variables of nutritional status among primary school children and to determine the risk factors associated with it. The study group was composed of 1576 students between 6 and 16 years of age. The prevalence of stunting, underweight, wasting were calculated according to WHO recommended cut-off points to define undernutrition. Chi-square tests, logistic regression analysis were used to investigate the relationship between the prevalence of undernutrition and the sociodemographic factors. The overall prevalence of stunting, underweight and wasting were found as 5.7, 4.6 and 1.0%, respectively. There were significant relationships between underweight and age, sex, number of family members, monthly family income. But, a significant correlation was found only between stunting and age. No correlation was found between wasting and sociodemographic factors. Undernutrition is still a common problem among primary school children in Istanbul. Identification of risk factors is essential for prevention of undernutrition.

Anemia is a frequent manifestation and an important health problem. The aim of this study was to found the prevalence of anemia among primary schoolchildren and determine the risk factors associated with anemia. The study group was composed of 1531 students between 6 and 16 years old from 14 primary schools located in seven different regions of Istanbul. Data were collected via a questionnaire filled out by parents. For all students, a complete blood cell count detected by an automated cell counter and anemia prevalence was determined according to Dallman criteria. The overall prevalence of anemia was found to be 27.6 per cent. There was no significant relationship between the prevalence of anemia and the students' age, gender, parents' educational level and employment, and monthly family income by logistic regression analysis. Only the number of family members and malnutrition were risk factors for anemia. Today, anemia is a common problem among primary schoolchildren in Istanbul. Identification of the risk factors is essential for the prevention of anemia.

The aim of this study was to demonstrate the prevalence of iodine deficiency among schoolchildren and the risk factors influencing it. One thousand five hundred and seventy-three schoolchildren were chosen from 14 schools in seven different regions in Istanbul. After all data relating to sociodemographic factors and the use of iodized salt were recorded, iodine contents of urine samples were determined by the Sandell Kolthoff reaction. Chi-squared and multiple regression analysis were used for the investigation of the correlation between iodine deficiency and risk factors. The prevalence of goitre (or = 2 grade) was 1.9 per cent. The median urine iodine level was in the normal range (10.5 microg/dl). In 46.2 per cent of the students the urine iodine levels were below 10 microg/dl and 13.9 per cent of the students had urine iodine levels below 5 microg/dl. The prevalence of iodine deficiency was significantly higher in younger (or = 10 years) children, in children with less educated mothers and fathers, and with poorer and more crowded families (p0.01, p0.01 and p0.01, p0.001, respectively). The rate of iodine deficiency was significantly higher in females than in males and also higher in children who lived on the European side of Istanbul than on the Anatolian side of Istanbul (p0.0001, p0.0001, respectively). The rate of use of iodized salt was 44.4 per cent and the iodine deficiency rate was not affected by the use of iodized salt (p0.05). Although the median urine iodine level was in the normal range, in 46.2 per cent of the students urine iodine levels were low (10 microg/dl). As there seems to be no effect from the use of iodized salt in iodine deficiency, the use of a more stable potassium iodate for the fortification of salt may be required.