To identify the main determinants of health services utilization by children under five years of age, a population-based study using systematic sampling was conducted in Rio Grande, Southern Brazil. Twelve previously trained interviewers applied a standardized home questionnaire to mothers in order to obtain data on living conditions, medical consultations, and hospitalization for children under five years of age. Among 514 children covered by the study, 50% had required consultation with a physician in the previous three months and 11% had been hospitalized in the previous twelve months. Acute respiratory infection was responsible for almost two-thirds of the consultations and half of the hospitalizations. After adjusting the analysis for several confounders, the most important determinants were children's age, father's schooling, and type of home construction. Identification of these factors can contribute to adequate planning of future health interventions and to reach children in the community who need but have not received health care.

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adjustment for sociodemographic characteristics, behavioural risk factors and health condition of individuals. But, the association between unemployment and poor self-rated health was not modified by neighbourhood socioeconomic indicators. Conclusion Results confirm the association between unemployment and poor self rated health, regardless the personal or contextual characteristics studied here. Similarly, they show a clear independent association between self rated health and neighbourhood context. But, they do not show that the neighbourhood contexts investigated modify the associations between unemployment and poor self rated health. Objective To evaluate the concentration of biomarkers of exposure to residues of organochlorine pesticides in adolescents in Rio de Janeiro, Brazil. Methods We obtained laboratory results of serum concentrations of the isomers of HCH and DDT metabolites from the data collection from medical records at a local health unit from a previous screening. Results We observed concentrations were considered well above the tolerance limits allowed. The distribution shows typical asymmetrical pattern, because of the presence of individuals with concentrations outliers distribution. Deserve special attention from the HCH congeners, the p,p'DDT and p,p'DDE; whose serum concentration mean and median are much higher than the level of tolerance permitted. Concentration obtained were from a HCH . In measuring the correlation between different types of organochlorine compounds evaluated, it is observed that the majority has mayor correlation (r ¼ 1.000), or nearly so, with great statistical significance (p<0.0001). Conclusion There is needing for monitoring and periodic evaluation of health of this population, considering that the blood is altered especially at this critical period of development. SP6-19 SP6-20 OCCUPATIONAL HEALTH RISKS: RELIABILITY TEST FROM INGECTH-SUS STUDY