Data-driven risk stratification for preterm birth in Brazil: a population-based study to develop of a machine learning risk assessment approach

Background

Preterm birth (PTB) is a growing health issue worldwide, currently considered the leading cause of newborn deaths. To address this challenge, the present work aims to develop an algorithm capable of accurately predicting the week of delivery supporting the identification of a PTB in Brazil.

Methods

This a population-based study analyzing data from 3,876,666 mothers with live births distributed across the 3,929 Brazilian municipalities. Using indicators comprising delivery characteristics, primary care work processes, and physical infrastructure, and sociodemographic data we applied a machine learning-based approach to estimate the week of delivery at the point of care level. We tested six algorithms: eXtreme Gradient Boosting, Elastic Net, Quantile Ordinal Regression - LASSO, Linear Regression, Ridge Regression and Decision Tree. We used the root-mean-square error (RMSE) as a precision.

Findings

All models obtained RMSE indexes close to each other. The lower levels of RMSE were obtained using the eXtreme Gradient Boosting approach which was able to estimate the week of delivery within a 2.09 window 95%IC (2.090-2.097). The five most important variables to predict the week of delivery were: number of previous deliveries through Cesarean-Section, number of prenatal consultations, age of the mother, existence of ultrasound exam available in the care network, and proportion of primary care teams in the municipality registering the oral care consultation.

Interpretation

Using simple data describing the prenatal care offered, as well as minimal characteristics of the pregnant, our approach was capable of achieving a relevant predictive performance regarding the week of delivery.

Funding

Bill and Melinda Gates Foundation, and National Council for Scientific and Technological Development - Brazil, (Conselho Nacional de Desenvolvimento Científico e Tecnológico - CNPQ acronym in portuguese) Support of the research project named: Data-Driven Risk Stratification for Preterm Birth in Brazil: Development of a Machine Learning-Based Innovation for Health Care- Grant: OPP1202186.

Health service utilization and associated factors, among students at the Federal University of Pelotas, Brazil: a cross-sectional study, 2018

OBJECTIVE

To analyze health service utilization and associated factors among university students.

METHODS

This was a cross-sectional study conducted with a sample of 2,708 students at the Federal University of Pelotas between November 2017 and July 2018.

RESULTS

Of the 1,865 individuals included in the study, 55.8% used health services in the last 12 months, 39.3% used specialized services, and 22.6% used health centers; 45.9% used services funded by the Brazilian National Health System (SUS); 49.1% used health services for the purposes of prevention. There was greater use among females (prevalence ratio, PR=1.34 - 95%CI 1.23;1.46) and students with health needs (PR=1.51 - 95%CI 1.40;1.63). Greater association was found with SUS-funded services: primary health care center (83.0% [95%CI 77.3;87.5]), accident and emergency (81.3% [95%CI 73.2;87.5]) and urgent care center (83.6% [95%CI 76.2;89.0]).

CONCLUSION

The analysis indicated that women and people with health needs use health services more and that the SUS is the main service provider.

Health care for people with diabetes and hypertension in Brazil: cross-sectional study of Program for Improving Access and Quality of Primary Care, 2014

OBJECTIVE

To assess health care for people with diabetes and hypertension, comparing the teams according to their participation in both cycles I and II of the Program for Improving Primary Health Care Access and Quality (PMAQ), and to verify its association with the characteristics of service users and municipalities.

METHODS

This was a cross-sectional study using PMAQ data from 2014. The following variables were used: team organization, request for tests and health care reported by service users.

RESULTS

Thirty-five percent of the teams presented adequate organization and 88% requested all tests. Among the users, 31% had their feet examined and 18% received adequate health care. Municipalities in the Southeast region, with more than 300,000 inhabitants and the highest human development index, presented the best indicators. The teams that took part in both cycles I and II showed greater prevalence of organization and request for tests.

CONCLUSION

Health care for people with diabetes and hypertension in primary health care in Brazil needs improvement.

[Availability of inputs for reproductive planning in three cycles of the Program for Improvement of Access and Quality in Basic Healthcare: 2012, 2014, and 2018]

The objective was to assess the availability of inputs for reproductive planning in basic healthcare units (UBS in Portuguese) that participated in the National Program for Improvement of Access and Quality of Basic Care (PMAQ-AB) and their distribution according to contextual factors. A comparative study was conducted of the three cycles of the PMAQ-AB (2012, 2014, and 2018). The study assessed the availability in the UBS of ethynyl-estradiol + levonorgestrel, norethisterone, norethisterone + estradiol, levonorgestrel, medroxyprogesterone, male and female condoms, IUDs, and rapid pregnancy tests. The study considered the availability and presence of all the inputs. Availability was assessed according to contextual factors in the city where the UBS was located. Availability of total inputs increased from 1.5% to 10.9%. In all the cycles, ethynyl-estradiol + levonorgestrel and male condoms showed the highest availability, and IUDs the lowest. Individual input´s availability also increased, with the highest increase of 36p.p. for female condoms, rapid pregnancy tests, and norethisterone + estradiol and the lowest of 15p.p. for ethynyl-estradiol + levonorgestrel, norethisterone, and IUDs. The North of Brazil showed the worst results. The largest increases were in the UBS in the municipalities with the lowest HDI and in those that participated in all the cycles of the PMAQ. Condoms are the only widely available inputs, and it is important to expand the availability of the other inputs, mainly IUDs and rapid pregnancy tests. The period under study experienced the promotion of equity, but regional inequalities need to be overcome. It is essential to monitor the inputs´ availability in order to improve reproductive planning.

National COVID-19 vaccination plan: using artificial spatial intelligence to overcome challenges in Brazil

This article explores the use of spatial artificial intelligence to estimate the resources needed to implement Brazil's COVID-19 immu nization campaign. Using secondary data, we conducted a cross-sectional ecological study adop ting a time-series design. The unit of analysis was Brazil's primary care centers (PCCs). A four-step analysis was performed to estimate the popula tion in PCC catchment areas using artificial in telligence algorithms and satellite imagery. We also assessed internet access in each PCC and con ducted a space-time cluster analysis of trends in cases of SARS linked to COVID-19 at municipal level. Around 18% of Brazil's elderly population live more than 4 kilometer from a vaccination point. A total of 4,790 municipalities showed an upward trend in SARS cases. The number of PCCs located more than 5 kilometer from cell towers was largest in the North and Northeast regions. Innovative stra tegies are needed to address the challenges posed by the implementation of the country's National COVID-19 Vaccination Plan. The use of spatial artificial intelligence-based methodologies can help improve the country's COVID-19 response.

Family Health Strategy, Primary Health Care, and Social Inequalities in Mortality Among Older Adults in Bagé, Southern Brazil

Objectives. To investigate the role of the Family Health Strategy (FHS) in reducing social inequalities in mortality over a 9-year follow-up period.Methods. We carried out a population-based cohort study of individuals aged 60 years and older from the city of Bagé, Brazil. Of 1593 participants at baseline (2008), 1314 (82.5%) were included in this 9-year follow-up (2017). We assessed type of primary health care (PHC) coverage and other variables at baseline. In 2017, we ascertained 579 deaths through mortality registers. Hazard ratios and their 95% confidence intervals modeled time to death estimated by Cox regression. We also tested the effect modification between PHC and wealth.Results. The FHS had a protective effect on mortality among individuals aged 60 to 64 years, a result not found among those not covered by the FHS. Interaction analysis showed that the FHS modified the effect of wealth on mortality. The FHS protected the poorest from all-cause mortality (hazard ratio [HR] = 0.59; 95% confidence interval [CI] = 0.36, 0.96) and avoidable mortality (HR = 0.46; 95% CI = 0.25, 0.85).Conclusions. FHS coverage reduced social inequalities in mortality among older adults. Our findings highlight the need to guarantee universal health coverage in Brazil by expanding and strengthening the FHS to promote health equity.

Progress and challenges in potential access to oral health primary care services in Brazil: A population-based panel study with latent transition analysis

OBJECTIVE

Compared indicators of potential access to oral health services sought in two cycles of the Program for Improvement of Access and Quality of Primary Care (PMAQ-AB), verifying whether the program generated changes in access to oral health services.

METHODS

Transitional analysis of latent classes was used to analyze two cross-sections of the external evaluation of the PMAQ-AB (Cycle I: 2011-2012 and Cycle II: 2013-2014), identifying completeness classes for a structure and work process related to oral health. Consider three indicators of structure (presence of a dental surgeon, existence of a dental office and operating at minimum hours) and five of the work process (scheduling every day of the week, home visits, basic dental procedures, scheduling for spontaneous demand and continuation of treatment). Choropleth maps and hotspots were made.

RESULTS

The proportion of elements that had one or more dentist (CD), dental office and operated at minimum hours varied from 65.56% to 67.13 between the two cycles of the PMAQ-AB. The number of teams that made appointments every day of the week increased 8.7% and those that made home visits varied from 44.51% to 52.88%. The reduction in the number of teams that reported guaranteeing the agenda for accommodating spontaneous demand, varying from 62.41% to 60.11% and in the continuity of treatment, varying from 63.41% to 61.11%. For the structure of health requirements, the predominant completeness profile was "Best completeness" in both cycles, comprising 71.0% of the sets at time 1 and 67.0% at time 2. The proportion of teams with "Best completeness" increased by 89.1%, the one with "Worst completeness" increased by 20%, while those with "Average completeness" decreased by 66.3%.

CONCLUSION

We identified positive changes in the indicators of potential access to oral health services, expanding the users' ability to use them. However, some access attributes remain unsatisfactory, with organizational barriers persisting.

Social relationships and survival in the older adult cohort

Objective:

to verify the influence of social relations on the survival of older adults living in southern Brazil.

Method:

a cohort study (2008 and 2016/17), conducted with 1,593 individuals aged 60 years old or over, in individual interviews. The outcomes of social relations and survival were verified by Multiple Correspondence Analysis, which guided the proposal of an explanatory matrix for social relations, the analysis of survival by Kaplan-Meier, and the multivariate analysis by Cox regression to verify the association between the independent variables.

Results:

follow-up was carried out with 82.5% (n=1,314), with 46.1% being followed up in 2016/17 (n=735) and 579 deaths (36.4%). The older adults who went out of their homes daily had a 39% reduction in mortality, and going to parties kept the protective effect of 17% for survival. The lower risk of death for women is modified when the older adults live in households with two or more people, in this case women have an 89% higher risk of death than men.

Conclusion:

strengthened social relationships play a mediating role in survival. The findings made it possible to verify the importance of going out of the house as a marker of protection for survival.

Habilidades de comunicação clínica dos preceptores de medicina de família e comunidade em Florianópolis, Santa Catarina, Brasil

Objetivo: Este estudo investigou a autoavaliação dos preceptores (versão resumida do Guia Observacional Calgary-Cambridge) sobre quanto aplicam e ensinam HCC, bem como sobre oportunidades de ensino e qualidade do feedback. Métodos: Realizou-se um estudo transversal com 44 preceptores ativos do internato e da residência de medicina de família e comunidade de Florianópolis, Santa Catarina, Brasil. Resultados: Os preceptores se autoavaliaram positivamente em relação à aplicação e ao ensino de HCC, mas as oportunidades de ensino de HCC são escassas e a qualidade do feedback é mediana. Conclusão: É preciso melhorar a estrutura física e a educação permanente sobre feedback e métodos de ensino, incluindo videogravação de consulta, para ampliar as oportunidades de ensino de HCC.

Multimorbidity and population at risk for severe COVID-19 in the Brazilian Longitudinal Study of Aging

This study aimed to measure the occurrence of multimorbidity and to estimate the number of individuals in the Brazilian population 50 years or older at risk for severe COVID-19. This was a cross-sectional nationwide study based on data from the Brazilian Longitudinal Study of Aging (ELSI-Brazil), conducted in 2015-2016, with 9,412 individuals 50 years or older. Multimorbidity was defined as ≥ 2 chronic conditions based on a list of 15 diseases considered risk conditions for severe COVID-19. The analyses included calculation of prevalence and estimation of the absolute number of persons in the population at risk. Self-rated health status, frailty, and basic activities of daily living were used as markers of health status. Sex, age, region of the country, and schooling were used as covariables. Some 80% of the sample had at least one of the target conditions, which represents some 34 million individuals. Multimorbidity was reported by 52% of the study population, with higher proportions in the Central, Southeast, and South of Brazil. Cardiovascular diseases and obesity were the most frequent chronic conditions. An estimated 2.4 million Brazilians are at serious health risk. The results revealed inequalities according to schooling. The number of persons 50 years or older who presented risk conditions for severe COVID-19 is high both in absolute and relative terms. The estimate is important for planning strategies to monitor persons with chronic conditions and for preventive strategies to deal with the novel coronavirus.

Protective behaviors for COVID-19 among Brazilian adults and elderly living with multimorbidity: the ELSI-COVID-19 initiative

To measure the occurrence of protective behaviors for COVID-19 and sociodemographic factors according to the occurrence of multimorbidity in the Brazilian population aged 50 or over was the objective of this study. We used data from telephone surveys among participants of ELSI-Brazil (Brazilian Longitudinal Study of Aging), conducted between May and June 2020. The use of non-pharmacological prevention measures for COVID-19, reasons for leaving home according to the presence of multimorbidity and sociodemographic variables were evaluated. among 6,149 individuals. Multimorbidity was more frequent in females, married, aged 50-59 years and residents of the urban area. Most of the population left home between once and twice in the last week, increasing according to the number of morbidities (22.3% no morbidities and 38% with multimorbidity). Leaving home every day was less common among individuals with multimorbidity (10.3%) and 9.3% left home in the last week to access health care. Hand hygiene (> 98%) and always wearing a mask when leaving home (> 96%) were almost universal habits. Greater adherence to social isolation was observed among women with multimorbidity when compared to men (PR = 1.49, 95%CI: 1.23-1.79). This adherence increased proportionally with age and inversely with the level of education. The protective behavior in people with multimorbidity seems to be greater in relation to the others, although issues related to social isolation and health care deserve to be highlighted. These findings can be useful in customizing strategies for coping with the current pandemic.

Self-learning Courses EaD to qualify clinical practice

Background

Health service evaluation studies point to the low quality of care, however the permanent education of health professionals is a major challenge. Within the scope of the Open University for the Unified Health System (SUS), the Department of Social Medicine of the Federal University of Pelotas produced open access self-learning courses, for primary health care, based on interactive clinical cases, through distance learning.

Methods

The courses, with 45 hours, provides interactive clinical cases, medical calculators and textual materials for use by the professional or with the community. The cases are presented and followed by multiple choice questions, focusing diagnosis and treatment. The feedback is automatic. An expanded theoretical content ('learn more') that privileges the use of illustrations, images, infographics and flowcharts useful for professional practice can be accessed. Bibliographical references on the subject are also available. The courses are available in a responsive web client app, for various types of devices, providing control of progress and automatic certification. The app allows the work offline, enabling the permanent education of professionals working in remote areas.

Results

Six courses were produced for doctors, nurses and dentists, more than 30,000 users were certified.

Conclusions

This problem-based learning initiative allows the student to have a menu of cases, providing a choice of the subject, decision on the time allocated to the activity, repetition according to its need, access to a large bibliography and reading in the quantity and depth chosen by the student. In addition, the format is challenging and develops clinical reasoning. The proposition of questions promotes the reflection of the student in relation to his knowledge on the subject. Automatic feedback, 'learn more' and selected bibliographies provide formative assessment and subsidize students to define their study needs in each subject.

Key messages

Distance learning expands the possibility of qualifying the clinical practice of health professionals, especially those in remote areas. Interactive clinical cases provide the development of clinical reasoning, content review and promote formative assessment.

Availability of family planning supplies in the Brazilian Primary Health Care Units

Background

The availability of contraceptive methods is a main determinant of their use and diversification is necessary to meet the reproductive health needs of women at different stages of life, in a universal and equitable way. The study aims to evaluate the availability of family planning supplies in Primary Care Units (PCU) in Brazil that adhered to the Program for Improvement of Access and Quality of Primary Care (PMAQ-AB) in three evaluation cycles (2012, 2014, 2018), as well as, its distribution according to the Human Development Index (HDI), population size, Family Health Strategy (FHS) coverage and geographic region.

Methods

A descriptive cross-sectional study, of the more than 10.000 UBS included in the external evaluation of the PMAQ-AB. Availability was assessed by the physical presence of the following supplies: ethinyl estradiol + levonorgestrel, norethisterone, norethisterone + estradiol, levonorgestrel, medroxyprogesterone, male and female condom, IUD and rapid pregnancy test. The availability of all supplies at the PCU was considered adequate availability.

Results

The availability of supplies increased in the evaluated period. The lowest availabilities were IUD, 34.4% and rapid pregnancy test, 41.8%; the greatest were male condoms, 96.9%, and ethinyl estradiol + levonorgestrel, 85.2%. In Cycle III, adequate availability was 10.9%. The North had the worst results, followed by the Midwest region. HDI had little effect and population size had no effect on adequate availability, while FHS coverage was associated with greater availability. The PCUs of municipalities with a lower HDI had the largest increases in adequate availability. Adequate availability was greater in the PCUs that participated in all PMAQ-AB cycles.

Conclusions

Policies aimed at strengthening PHC increased the availability of supplies evaluated with equity promotion, however, regional inequities remain. The availability of a rapid pregnancy test and an IUD should be increased.

Key messages

Policies aimed at strengthening PHC, focusing infrastructure, provision and training professionals and quality monitoring increased the availability of family planning supplies with equity promotion. Monitoring the availability family planning supplies is essential for detecting failures, as the low availability of rapid pregnancy test, an essential supply for the early start of prenatal care.

Comprehending the lack of access to maternal and neonatal emergency care: Designing solutions based on a space-time approach

OBJECTIVE

The objective of this study was to better understand how the lack of emergency child and obstetric care can be related to maternal and neonatal mortality levels.

METHODS

We performed spatiotemporal geospatial analyses using data from Brazilian municipalities. An emergency service accessibility index was derived using the two-step floating catchment area (2SFCA) for 951 hospitals. Mortality data from 2000 to 2015 was used to characterize space-time trends. The data was overlapped using a spatial clusters analysis to identify regions with lack of emergency access and high mortality trends.

RESULTS

From 2000 to 2015 Brazil the overall neonatal mortality rate varied from 11,42 to 11,71 by 1000 live births. The maternal mortality presented a slightly decrease from 2,98 to 2,88 by 100 thousand inhabitants. For neonatal mortality the Northeast and North regions presented the highest percentage of up trending. For maternal mortality the North region exhibited the higher volume of up trending. The accessibility index obtained highlighted large portions of the rural areas of the country without any coverage of obstetric or neonatal beds.

CONCLUSIONS

The analyses highlighted regions with problems of mortality and access to maternal and newborn emergency services. This sequence of steps can be applied to other low and medium income countries as health situation analysis tool.

SIGNIFICANCE STATEMENT

Low and middle income countries have greater disparities in access to emergency child and obstetric care. There is a lack of approaches capable to support analysis considering a spatiotemporal perspective for emergency care. Studies using Geographic Information System analysis for maternal and child care, are increasing in frequency. This approach can identify emergency child and obstetric care saturated or deprived regions. The sequence of steps designed here can help researchers, and policy makers to better design strategies aiming to improve emergency child and obstetric care.

[Lack of access and the trajectory of healthcare use by elderly Brazilians]

Populational ageing is a current phenomenon and calls for the reconfiguration of health services and expansion of access for the elderly. This is a cross-sectional study with 6,624 elderly Brazilians over 60 that set out to evaluate access to healthcare by measuring lack of access and by describing the trajectory until recourse to hospitalization, emergency care and medical visits. The variables were analyzed according to the nature of funding to access the service (SUS, private insurance and cash-payment). The prevalence of lack of access was 2.5% (CI95% 1.6;4.0) for hospitalizations, 2.1% (CI95% 1.4; 3.1) for emergency rooms, and 0.6% (CI95% 0.3;0.9) for medical visits. SUS accounted for most of the care provided. Positive aspects of SUS were the higher number of medical visits in the city of residence and less money spent on transport. The private system stands out for the low frequency of long waiting times and higher frequency of referrals to return visits after hospitalization. The findings highlight the importance of SUS in Brazil in promoting equality and universality despite the existing deficiencies. In both public and private systems, greater articulation among the healthcare levels is required for integral healthcare to elderly individuals.

Characteristics of primary care and rates of pediatric hospitalizations in Brazil

OBJECTIVE

To evaluate the association among characteristics of primary health care center (PHCC) with hospitalizations for primary care sensitive conditions (PCSC) in Brazil.

METHOD

In this study, a cross-sectional ecological study was performed. This study analyzed the 27 capitals of Brazil's federative units. Data were aggregated from the following open access databases: National Program for Access and Quality Improvement in Primary Care, the Hospital Information System of Brazilian Unified Health System and Annual Population Census conducted by the Brazilian Institute of Geography and Statistics. Associations were estimated among characteristics of primary care with the number of three PCSC as the leading causes of hospitalization in children under-5 population in Brazil: asthma, diarrhea, and pneumonia.

RESULTS

In general, PHCC showed limited structural adequacy (37.3%) for pediatric care in Brazil. The capitals in South and Southeast regions had the best structure whereas the North and Northeast had the worst. Fewer PCSC hospitalizations were significantly associated with PHCC which presented appropriate equipment (RR: 0.98; 95%CI: 0.97-0.99), structural conditions (RR: 0.98; 95%CI: 0.97-0.99), and signage/identification of professionals and facilities (RR: 0.98; 95%CI: 0.97-0.99). Higher PCSC hospitalizations were significantly associated with PHCC with more physicians (RR: 1.23, 95%CI: 1.02-1.48), it forms (RR: 1.01, 95%CI: 1.01-1.02), and more medications (RR: 1.02, 95%CI: 1.01-1.03).

CONCLUSION

Infrastructural adequacy of PHCC was associated with less PCSC hospitalizations, while availability medical professional and medications were associated with higher PCSC hospitalizations.

Modifiable risk factors for 9-year mortality in older English and Brazilian adults: The ELSA and SIGa-Bagé ageing cohorts

To quantify and compare 9-year all-cause mortality risk attributable to modifiable risk factors among older English and Brazilian adults. We used data for participants aged 60 years and older from the English Longitudinal Study of Ageing (ELSA) and the Bagé Cohort Study of Ageing (SIGa-Bagé). The five modifiable risk factors assessed at baseline were smoking, hypertension, diabetes, obesity and physical inactivity. Deaths were identified through linkage to mortality registers. For each risk factor, estimated all-cause mortality hazard ratios (HR) and population attributable fractions (PAF) were adjusted by age, sex, all other risk factors and socioeconomic position (wealth) using Cox proportional hazards modelling. We also quantified the risk factor adjusted wealth gradients in mortality, by age and sex. Among the participants, 659 (ELSA) and 638 (SIGa-Bagé) died during the 9-year follow-up. Mortality rates were higher in SIGa-Bagé. HRs and PAFs showed more similarities than differences, with physical inactivity (PAF 16.5% ELSA; 16.7% SIGa-Bagé) and current smoking (PAF 4.9% for both cohorts) having the strongest association. A clear graded relationship existed between the number of risk factors and subsequent mortality. Wealth gradients in mortality were apparent in both cohorts after full adjustment, especially among men aged 60-74 in ELSA. A different pattern was found among older women, especially in SIGa-Bagé. These findings call attention for the challenge to health systems to prevent and modify the major risk factors related to non-communicable diseases, especially physical inactivity and smoking. Furthermore, wealth inequalities in mortality persist among older adults.

Prenatal care in Brazil: a cross-sectional study of the Program for Improving Primary Care Access and Quality, 2014

OBJECTIVE

to describe the adequacy of primary health care center structure, requests for tests and prenatal care reported by female health service users within the scope of the Program for Improving Primary Care Access and Quality (PMAQ) in Brazil.

METHODS

this was a cross-sectional study using PMAQ Cycle II (2014) data.

RESULTS

data from 9,909 health centers, 9,905 teams, and 9,945 female health service users were included; 70.1% (95%CI 69.2;71.0) of health centers had adequate structure; 88.0% (95%CI 87.4;88.7) of the teams requested all tests; 59.8% (95%CI 58.8;60.8) of female health service users reported receiving total guidance, and 23.4% of them (95%CI 22.5;24.2) underwent all physical examination procedures; teams that participated in both Cycle I and Cycle II presented better results.

CONCLUSION

in spite of shortcomings in Primary Care structure and work process in Brazil, PMAQ appears to positively affect prenatal care.

Structure for the work and composition of Family Health Support Unit teams: national survey - Program for Improving Primary Health Care Access and Quality (PMAQ), 2013

OBJECTIVE

to describe the structure of Family Health Support Unit (FHSU) teams with regard to physical space, training received, continuing education and professionals that support Primary Health Care (PHC) teams in Brazil, in 2013.

METHODS

this is a descriptive study using data from the external evaluation stage of the Program for Improving Primary Health Care Access and Quality (PMAQ).

RESULTS

the 1,773 FHSU teams mainly used shared clinics at primary health care centers (85.7%); 63.4% of professionals were offered specific training when they started work at their FHSU, while 67.4% were offered continuing education; the teams received support mainly from physiotherapists (87.4%) and Physical Education professionals (87,0%).

CONCLUSION

the structure available for FHSU teams is in accordance with the guidelines; some FHSU professionals have not received any specific training for the job.

Exposição a agrotóxicos: estudo de base populacional em zona rural do sul do Brasil

RESUMO: Objetivo: Estimar a prevalência de exposição a agrotóxicos e fatores associados entre moradores de zona rural. Métodos: Estudo transversal de base populacional realizado com 1.518 indivíduos, em 2016. Foram aleatoriamente selecionados 24 setores censitários de oito distritos rurais de Pelotas, RS. Indivíduos ≥ 18 anos residentes nos domicílios aleatoriamente selecionados eram elegíveis. Foi realizada análise descritiva e apresentada prevalência de contato com os agrotóxicos. A associação entre desfecho e variáveis independentes deu-se por regressão de Poisson, conforme modelo hierárquico. As variáveis foram ajustadas para todas do mesmo nível, além daquelas que foram mantidas no modelo do nível anterior e das com valor p < 0,20. Resultados: A prevalência de contato com agrotóxicos no último ano foi de 23,7%, e, entre esses participantes, 5,9% relataram intoxicação por agrotóxicos alguma vez na vida. A probabilidade de contato com agrotóxicos no último ano foi maior entre os homens (razão de prevalência - RP = 2,00; intervalo de confiança de 95% - IC95% 1,56 - 2,56); entre aqueles com idades entre 40 e 49 anos (RP = 1,44; IC95% 1,12 - 1,80); entre os menos escolarizados (RP = 2,06; IC95% 1,39 - 3,10); os que exerciam trabalho rural (RP = 2,87; IC95% 2,05 - 4,01); e aqueles que moraram na zona rural a vida inteira (RP = 1,28; IC95% 1,00 - 1,66). Conclusões: Aproximadamente um em cada quatro adultos da zona rural de Pelotas entrou em contato com agrotóxicos no ano anterior ao estudo. Os achados evidenciam a existência de desigualdades sociais relacionadas à exposição aos agrotóxicos e fornecem informações para ações visando à redução da exposição e intoxicação por esses produtos.

The ability of waist-to-height ratio to identify health risk

OBJECTIVE

To evaluate the performance of the ratio between the waist circumference and the height in the identification of health risk compared with the correlation matrix between the anthropometric parameters body mass index and waist circumference.

METHODS

A population-based study presenting a transversal cut in a representative sample of the Brazilian adult and older population. The combination of the body mass index with the waist circumference resulted in health risk categories, and the cutoff points of the ratio between the waist circumference and the height as anthropometric indicator were used for classification of low and increased risk. Poisson regression was used to verify the association of systemic arterial hypertension with the health risk categories.

RESULTS

The results showed 26% of adult men, 10.4% of adult women and more than 30% of the older adults of both genders classified as without risk by the combination matrix between body mass index and waist circumference presented a ratio between the waist circumference and height that showed increased risk. All risk categories continued to be associated with hypertension after control for confounding factors, being almost two times higher for adults with moderate and high risk according to both methods. When the waist-to-height ratio was used as a risk indicator, the prevalence of hypertension ratios for the older adults was 1.37 (95%CI 1.16–1.63) and 1.35 (95%CI 1.12–1.62) for men and women, respectively, being these values close to the combination matrix body mass index and waist circumference.

CONCLUSIONS

The waist-to-height ratio identified more individuals at early health risk than the combination matrix between the body mass index and the waist circumference and showed comparable ability to identify health risk, regardless of gender and age, regarding the prevalence ratios for systemic arterial hypertension.

Evaluation of the Program to Combat Neglected Diseases in controlling schistosomiasis mansoni in three hyperendemic municipalities, Pernambuco, Brazil, 2014

OBJECTIVE

to evaluate the implementation of schistosomiasis mansoni control actions under the Program to Combat Neglected Diseases in three municipalities in Pernambuco state, Brazil.

METHODS

implementation analysis was done in 2014, considering the following components - management, epidemiological surveillance, patient care, laboratorial support and health education -; direct observation and interviews were carried out with managers and technical personnel at the state, regional, and municipal levels.

RESULTS

partial implementation was found in municipalities A and B 69.7%; 62.2%, while there was full implementation in municipality C 79.5%; contextual weaknesses were found in communication between management levels, insufficient technical-management autonomy of decentralized levels, and professional staff job instability; potentialities identified were - continuing education, political articulation, knowledge about the program, and performance evaluation.

CONCLUSION

contextual categories related to development and implementation stood out for their positive influence on the degree of implementation in the municipalities; we recommend intervention in the weaknesses found, in order to ensure program sustainability and institutionalization.

Family Health Support Center: health promotion, physical activity, and chronic diseases in Brazil - national PMAQ survey 2013

OBJECTIVE

to describe reported health promotion actions directed towards chronic non-communicable disease (CNCD) patients, the support of physical education professionals (PEP) and the implementation of actions to promote body practices and physical activity (BPPA) by the Family Health Support Center (FHSC) teams, according to Brazilian municipality context variables.

METHODS

this was a cross-sectional study, forming part of the 2013/2014 National Primary Health Care Access and Quality Improvement Program (PMAQ), by means of interviews with FHSC professionals.

RESULTS

the action most reported by the teams was evaluation and rehabilitation of psychosocial conditions (90.8%); promotion of BPPA was the sixth most performed action, and was more prevalent in the Brazilian Southeast region (89.6%), in medium-sized municipalities (88.7%), with medium human development index (HDI) (86.7%); PEP provided support to 87% of the teams.

CONCLUSION

FHSC were found to make an important contribution to BPPA.

[Occurrence of spinal disorders and associated factors among the elderly: a population study in a municipality in the deep south of Brazil]

The scope of this study was to estimate the prevalence of spinal disorders among the elderly and analyze potential associated factors. It involved a cross-sectional study of a sample of 1,593 elderly individuals aged 60 years or more residing in the urban area of Bagé, State of Rio Grande do Sul. In addition to the "spinal disorders" outcome, demographic, socioeconomic and behavioral variables, health perception, functional activities and the use of health services were investigated. Data collection was conducted by means of face-to-face interviews. Poisson regression analysis with robust variance was used to verify the factors associated with the outcome analyzed. Of the 1,593 participants, 37.4% reported spinal disorders. The factors related to the outcome were: low level of schooling, poor self-assessment of health, consultation in the last three months and the presence of hypertension, rheumatism and fractures. Interventions for musculoskeletal health can contribute to reduce the damages caused by spinal disorders among the elderly, such as loss of functional capacity, increased demands for health care and reduced quality of life.