Although approaches aimed at detecting inappropriate prescribing have intensified in recent years, we observed limited overlap between different PIM lists. Additionally, some PIM lists did not provide special considerations of use and alternative therapies to avoid PIMs. These facts may compromise the use of PIM lists in clinical practice. Future PIM lists should integrate information about alternative therapies and special considerations of use in order to help clinicians in the drug prescription.

IntroduçãoO acesso a medicamentos é um indicador da qualidade e resolutividade do sistema de saúde 1 e um determinante importante do cumprimento do tratamento prescrito. A literatura indica que a falta de acesso é uma causa freqüente de retorno de pacientes aos serviços de saúde 2 .Os medicamentos de uso contínuo assumem grande importância no tratamento de doenças crônico-degenerativas, como a hipertensão arterial sistêmica e o diabetes mellitus, bem como de problemas de saúde mental, morbidades estas que apresentam prevalências crescentes no Brasil em decorrência do envelhecimento populacional 3 . A falta de acesso a medicamentos para tratamento dessas enfermidades pode levar ao agravamento do quadro e aumentar os gastos com a atenção secundária e terciária 2 . Considerando-se que a maioria da população atendida no serviço público de saúde é de baixa renda, a obtenção gratuita é, freqüentemente, a única alternativa de acesso ao medicamento. Nesse contexto, o sistema público de saúde, e em particular o Programa Saúde da Família (PSF), desenvolve ações que visam a acompanhar de forma sistemática os indivíduos com essas morbidades e promover o cuidado integral, incluindo o acesso a medicamentos essenciais 4 .No Brasil, dados populacionais sobre o acesso a medicamentos são raros. A maioria dos estudos avalia o acesso com base na proporção de me-ARTIGO ARTICLE

BackgroundChronic low back pain (CLBP) is a highly disabling morbidity with high social, economic and individual effects. Demographic, occupational and behavioral changes that took place in Brazil over the last decade are related with an increasing burden of chronic conditions. Despite these changes, comparison studies on CLBP prevalence and associated factors, over time are scarce in the literature in general, and unknown in Brazil. The present study compared the CLBP prevalence in a medium sized city in Brazil between the years 2002 and 2010 and examined factors associated with prevalence in 2010.MethodsTwo cross-sectional studies with similar methodology were conducted in a medium-sized city in southern Brazil, in 2002 and 2010. 3182 individuals were interviewed in the first study and 2732 in the second one, all adults aged twenty years or more. Those who reported pain for seven weeks or more in the last three months in the lumbar region where considered cases of CLBP.ResultsThe CLBP prevalence increased from 4.2% to 9.6% in 8 years. In most of the studied subgroups the CLBP prevalence has at least doubled and the increase was even larger among younger individuals with more years of education and higher economic status.ConclusionsIncrease in CLBP prevalence is worrisome because it is a condition responsible for substantial social impact, besides being an important source of demand for health services.

Prevalência de morbidades e sintomas em idosos: um estudo comparativo entre zonas rural e urbanaThe prevalence of morbidity and symptoms among the elderly: a comparative study between rural and urban areas

The study evaluated free access to hypertension and diabetes medicines and the reasons reported for lack of access. The sample included 4,003 elderly people living in Primary Care Unit coverage areas from 41 Southern and Northeastern Brazilian cities. Free access was higher in the Northeast (62.4%). The strategy of the Family Health Program (Programa Saúde da Família - PSF) was more effective in providing access than the traditional model, with higher results in the Northeast (61.2%) than in the South (39.6%). Around 20% of medicines included in the Hypertension and Diabetes Program and 26% of those included in the National Essential Medicines List (RENAME) were paid out of pocket. In the Northeast, 25% of insulin and 32% of oral antidiabetics were paid out of pocket. Unavailability in the public sector and a lack of money determined the lack of access. Although the PSF, Hypertension and Diabetes Program and RENAME expanded free access, supplies were insufficient. A greater connection between programs and a clear definition of responsibilities can improve medicine acquisition process, increasing the effectiveness of pharmaceutical assistance.

OBJECTIVE:To assess the use of healthcare services by elderly individuals suffering from chronic diseases. METHODS: RESULTS:The prevalence of medical visit in the last six months was 45% in the South region and 46% in the Northeast region. The prevalence of participation in groups of educational activities in the last year was 16% in the South and 22% in the Northeast. In both regions, use of services was higher for elderly people under the age of 80 years, with low level of schooling and living in catchment areas of primary care units with Programa Saúde da Família (Family Health Program). Only in the South region did the elderly with functional disability have higher prevalence of medical visits. CONCLUSIONS:The prevalence of medical visit and participation in groups of educational activities was low when compared to previous studies conducted with elderly individuals in Brazil. The results indicate that, although the Family Health Program promotes greater use of services at primary care units by elderly people with chronic conditions, it is necessary to expand the access of those aged over 80 and of individuals with functional disability.

BackgroundPhysical activity instruments can be subjective or objective. There is a need to assess the reliability of these instruments, especially for researches in children. The aim of this study was to determine the validity of the Netherlands Physical Activity Questionnaire (NPAQ).MethodsPopulation under study were Brazilian children aged 4 to 11 years old, enrolled in a population-based study. Data collection took place in two distinct moments: 1) application of the NPAQ by face-to-face interviews with mothers' children and 2) utilization of accelerometers by children as the reference method. GT1M Actigraph accelerometer was worn for five consecutive days. Validity analyses were performed by sensitivity and specificity and ROC (Receiver Operator Characteristic) curve.ResultsTwo hundred and thirty nine children participated in both phases of the study. A total of 73.2% children achieved the recommendation of 60 min/day of moderate to vigorous physical activity. The mean and median of the NPAQ score were 25.5 and 26, respectively. The score ranged from 7 to 35 points. The correlation coefficient between the NPAQ and the time spent in moderate to vigorous physical activities was 0.27. Based on the area under the ROC curve, the median value presented the best indicators of sensitivity (59.4%) and specificity (60.9%), and the area under curve was 0.63. The predictive capacity of the NPAQ to identify active children was high regardless the cut-off point chosen. This capacity was even higher if the score was higher than 30.ConclusionsBased on sensitivity and specificity values, the NPAQ did not show satisfactory validity. The comparison of the reliability of the NPAQ with other instruments is limited, but correlation coefficients found in this study are similar to others. Physical activity level of children estimated from the NPAQ must be interpreted cautiously, and objective measures such as accelerometers should be encouraged.

Características da demanda do serviço de saúde de emergência no Sul do BrasilCharacteristics of the emergency health service demand in Southern Brazil