Análise econômica de custo-utilidade de três intervenções para promoção de atividade física em usuários do SUS de Rio Claro – SP
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2017-12-15
Autores
Sposito, Leticia Aparecida Calderão [UNESP]
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Universidade Estadual Paulista (Unesp)
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No Brasil, 45,1% da população não atingem as recomendações de Atividade Física (AF) sendo um fator de alta relação com às Doenças Crônicas não Transmissíveis. A Atenção Primária atinge cerca de 50% dos brasileiros, tornando-se um local hábil para a promoção de estratégias em AF. O Breve Aconselhamento é um exemplo potencial para aumentar os níveis de AF da população, melhorar a Qualidade de Vida (QdV) e ser econômico. Mas pouco se sabe sobre a efetividade desse tipo de intervenção no Brasil e, um método para verificá-la é por meio da análise econômica de custo-utilidade que fornece o Quality Adjusted Life Years (QALY) ganho. O objetivo do estudo foi comparar o custo-utilidade incremental de uma intervenção de Breve Aconselhamento para a prática de atividade física (BA), de uma estratégia de Indicação para a Prática de Atividade Física supervisionada (IPAF), e de um grupo Controle e, verificar a influência das intervenções sobre o percentual de fisicamente ativos em adultos usuários de unidades do Programa Saúde da Família (PSF) de Rio Claro-SP, durante 12 meses. O estudo é de característica longitudinal, composto por 75 usuários da unidade do PSF de Rio Claro – SP. Para a obtenção dos valores de QALY utilizou-se o questionário SF-36. Para o tempo de AF aplicou-se o questionário International Physical Activity Questionnaire (IPAQ-versão longa) e o Modelo Transteorético (MTT) para verificar mudança de comportamento. Os grupos foram divididos em três pela função aleatória do Excel: (1) BA, com duração média de 20 min, no qual os participantes receberam orientações para aumentar o tempo de AF; (2) IPAF, onde os participantes foram convidados/indicados para participarem do programa de AF no PSF, com frequência de 2 vezes por semana e duração de 60 min/aula, e (3) grupo Controle, não receberam nenhum incentivo para mudança de comportamento. Todos os grupos foram entrevistados na unidade do PSF, em cinco momentos, durante um ano. Para verificar diferenças entre custos e QALYs dos programas fez-se uso da técnica Incremental cost-effectiveness ratio (ICER), e aplicou-se o teste de qui-quadrado para o tempo de AF. Os resultados demonstraram que a intervenção IPAF obteve baixa adesão. Em relação aos valores de QALY o grupo BA apresentou maior média ao fim de 12 meses (0,800). O maior QALY ganho ocorreu entre as intervenções BA vs. Controle, produzindo 0,012/QALY, seguida do grupo BA vs. IPAF com 0,009/QALY e IPAF vs. Controle em 0,003/QALY. O ICER entre a estratégia BA vs. Controle correspondeu a R$ 5.087,50/QALY e BA vs. IPAF com uma economia de R$ - 3.830,00/QALY e IPAF vs. Controle com ICER de R$ 31.840,00/QALY. O BA se apresenta de maneira mais barata quando comparado ao IPAF. Em relação ao tempo de AF, não foram encontradas diferenças significativas para o domínio lazer em nenhuma das intervenções, inversamente ocorre para AF no transporte, identificando-se superioridade significativa no 12º mês do BA vs. grupo Controle de fisicamente ativos. Para o tempo total de AF ocorreu diferença significativa para o BA comparado ao grupo Controle no 9º mês e 12º mês. Sob a perspectiva do MTT observou-se que 38,4% do grupo BA, 16,6% do IPAF e 16,7% do Controle passaram para a fase Ação e Manutenção de AF no lazer no 12º mês. Conclui-se que a estratégia de BA tende a ser efetiva ao ser comparada com o grupo IPAF e Controle, demonstrando resultados moderados para a AF.
In Brazil, 45.1% of the population do not reach the recommendations of Physical Activity (PA) being a factor of high relation with the Noncommunicable Chronic Diseases. Primary Care reaches about 50% of Brazilians, becoming a good place to promote strategies in PA. Brief Counseling is a potential example for increasing the population's PA levels, improving Quality of Life (QoL) and being economical. But little is known about the effectiveness of this type of intervention in Brazil, and one method of verifying it is through the economic cost-utility analysis that provides the Quality Adjusted Life Years (QALY) gain. The objective of the study was to compare the incremental cost-utility of a Brief Counseling intervention for the practice of physical activity (BC), an Indicated Practice for Supervised Physical Activity (IPAF) strategy, and a Control group and, to verify the influence of the interventions on the percentage of physically active in adult users of units of the Family Health Program (PSF) of Rio Claro-SP, for 12 months. The study is a longitudinal feature, composed of 75 users of the PSF unit of Rio Claro - SP. To obtain the QALY values, the SF-36 questionnaire was used. For the PA time, the International Physical Activity Questionnaire (IPAQ-long version) and the Transtheoric Model (MTT) were applied to verify behavior change. The groups were divided into three groups by the random function of Excel: (1) BC, with an average duration of 20 min, in which the participants received guidelines to increase the PA time; (2) IPAF, where participants were invited/nominated to participate in the FHP program, with frequency of 2 times a week and duration of 60 min / lesson, and (3) Control group, received no incentive to change behavior. All groups were interviewed at the PSF unit, in five moments, during a year. To verify differences between costs and QALYs of the programs, the Incremental cost-effectiveness ratio (ICER) technique was used, and the chi-square test for the AF time was applied. The results demonstrated that the IPAF intervention obtained low adhesion. Regarding the QALY values, the BC group presented the highest mean at the end of 12 months (0.800). The highest QALY gain occurred between the interventions BC vs. Control, producing 0.012/QALY, followed by group BC vs. IPAF with 0.009/QALY and IPAF vs. Control at 0.003/QALY. The ICER between the strategy BC vs. Control corresponded to R $ 5,087.50/QALY and BC vs. IPAF with a saving of R$-3,830.00/QALY and IPAF vs. Control with ICER of R $ 31,840.00/QALY. BC is less expensive when compared to IPAF. In relation to the time of PA, no significant differences were found for the leisure domain in any of the interventions, inversely for PA in the transport, identifying significant superiority in the 12th month of BC vs. Control group of physically active. For the total PA time, there was a significant difference for the BC compared to the Control group in the 9th month and 12 months. From the perspective of the MTT, it was observed that 38.4% of the BC group, 16.6% of the IPAF and 16.7% of the Control moved to the Action and Maintenance phase of leisure PA in the 12th month. It is concluded that the BC strategy tends to be effective when compared to the IPAF and Control group, showing moderate results for PA.
In Brazil, 45.1% of the population do not reach the recommendations of Physical Activity (PA) being a factor of high relation with the Noncommunicable Chronic Diseases. Primary Care reaches about 50% of Brazilians, becoming a good place to promote strategies in PA. Brief Counseling is a potential example for increasing the population's PA levels, improving Quality of Life (QoL) and being economical. But little is known about the effectiveness of this type of intervention in Brazil, and one method of verifying it is through the economic cost-utility analysis that provides the Quality Adjusted Life Years (QALY) gain. The objective of the study was to compare the incremental cost-utility of a Brief Counseling intervention for the practice of physical activity (BC), an Indicated Practice for Supervised Physical Activity (IPAF) strategy, and a Control group and, to verify the influence of the interventions on the percentage of physically active in adult users of units of the Family Health Program (PSF) of Rio Claro-SP, for 12 months. The study is a longitudinal feature, composed of 75 users of the PSF unit of Rio Claro - SP. To obtain the QALY values, the SF-36 questionnaire was used. For the PA time, the International Physical Activity Questionnaire (IPAQ-long version) and the Transtheoric Model (MTT) were applied to verify behavior change. The groups were divided into three groups by the random function of Excel: (1) BC, with an average duration of 20 min, in which the participants received guidelines to increase the PA time; (2) IPAF, where participants were invited/nominated to participate in the FHP program, with frequency of 2 times a week and duration of 60 min / lesson, and (3) Control group, received no incentive to change behavior. All groups were interviewed at the PSF unit, in five moments, during a year. To verify differences between costs and QALYs of the programs, the Incremental cost-effectiveness ratio (ICER) technique was used, and the chi-square test for the AF time was applied. The results demonstrated that the IPAF intervention obtained low adhesion. Regarding the QALY values, the BC group presented the highest mean at the end of 12 months (0.800). The highest QALY gain occurred between the interventions BC vs. Control, producing 0.012/QALY, followed by group BC vs. IPAF with 0.009/QALY and IPAF vs. Control at 0.003/QALY. The ICER between the strategy BC vs. Control corresponded to R $ 5,087.50/QALY and BC vs. IPAF with a saving of R$-3,830.00/QALY and IPAF vs. Control with ICER of R $ 31,840.00/QALY. BC is less expensive when compared to IPAF. In relation to the time of PA, no significant differences were found for the leisure domain in any of the interventions, inversely for PA in the transport, identifying significant superiority in the 12th month of BC vs. Control group of physically active. For the total PA time, there was a significant difference for the BC compared to the Control group in the 9th month and 12 months. From the perspective of the MTT, it was observed that 38.4% of the BC group, 16.6% of the IPAF and 16.7% of the Control moved to the Action and Maintenance phase of leisure PA in the 12th month. It is concluded that the BC strategy tends to be effective when compared to the IPAF and Control group, showing moderate results for PA.
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Palavras-chave
Atividade física, Breve aconselhamento, Atenção primária de saúde, QALY, Physical activity, Brief counseling, Primary health care