Screen time and low back pain in children and adolescents: a systematic review of Brazilian studies.

OBJECTIVE: To identify and summarize the possible associations between screen time and low back pain in children and adolescents. DATA SOURCE: Systematic searches were performed in five electronic databases (Lilacs, Scielo, Scopus, PubMed and Web of Science) on 01/25/2021, complemented by manual searches in reference lists and on Google Scholar, looking for original scientific articles that included Brazilian observational studies; whose samples had children and/or adolescents aged between 6 and 19 years, without specific clinical conditions, and that presented analyses of associations between indicators of screen time and nonspecific low back pain, based on regression models. DATA SYNTHESIS: Nine cross-sectional studies whose samples had adolescents were included. Of the 18 analyses identified, nine reported risk relationships between the variables of interest. More specifically, risk associations were found in two studies that evaluated adolescents exposed to at least three hours using cell phone or tablet, and watching television per day. Also, instruments, cut-off points adopted, and screen equipment evaluated were diverse. CONCLUSIONS: Even though most of the risk associations were borderline from the statistical point of view, we found a higher frequency of risk associations between screen time and non-specific low back pain in adolescents exposed to screen time for at least three hours a day. In addition, further longitudinal studies with samples composed of children should be conducted across the country.

Screen time and low back pain in children and adolescents: a systematic review of Brazilian studies / Tempo de tela e dor lombar em crianças e adolescentes: revisão sistemática de estudos brasileiros

ABSTRACT Objective: To identify and summarize the possible associations between screen time and low back pain in children and adolescents. Data source: Systematic searches were performed in five electronic databases (Lilacs, Scielo, Scopus, PubMed and Web of Science) on 01/25/2021, complemented by manual searches in reference lists and on Google Scholar, looking for original scientific articles that included Brazilian observational studies; whose samples had children and/or adolescents aged between 6 and 19 years, without specific clinical conditions, and that presented analyses of associations between indicators of screen time and nonspecific low back pain, based on regression models. Data synthesis: Nine cross-sectional studies whose samples had adolescents were included. Of the 18 analyses identified, nine reported risk relationships between the variables of interest. More specifically, risk associations were found in two studies that evaluated adolescents exposed to at least three hours using cell phone or tablet, and watching television per day. Also, instruments, cut-off points adopted, and screen equipment evaluated were diverse. Conclusions: Even though most of the risk associations were borderline from the statistical point of view, we found a higher frequency of risk associations between screen time and non-specific low back pain in adolescents exposed to screen time for at least three hours a day. In addition, further longitudinal studies with samples composed of children should be conducted across the country.

Resumo Objetivo: Identificar e sumarizar os dados sobre as possíveis associações entre o tempo de tela e a dor lombar em crianças e adolescentes. Fontes de dados: Buscas sistemáticas em cinco bases de dados eletrônicas (Lilacs, Scielo, Scopus, Pubmed e Web of Science), no dia 25/01/2021, complementadas por buscas manuais em listas de referências e no site Google Acadêmico, procurando por artigos científicos originais que comunicaram estudos observacionais brasileiros que envolveram amostras de crianças e/ou adolescentes entre 6 e 19 anos de idade, sem condições clínicas específicas e que apresentassem análises de associações entre indicadores do tempo de tela e dor lombar não específica, baseadas em modelos de regressão. Síntese dos dados: Nove estudos transversais foram incluídos, envolvendo amostras de adolescentes. Das 18 análises identificadas, 9 mostraram relações de risco entre as variáveis de interesse. Mais especificamente, verificaram-se associações de risco em dois estudos que avaliaram adolescentes expostos a, pelo menos, três horas diárias de celular, tablete e televisão. Também se observou diversidade entre instrumentos, pontos de corte adotados e equipamentos de tela avaliados. Conclusões: Mesmo que a maior parte das associações de risco tenha sido limítrofe, do ponto de vista estatístico, a presente síntese apresentou maior frequência de associações de risco entre o tempo de tela e a dor lombar não específica em adolescentes expostos ao tempo de tela por, pelo menos, três horas diárias. Complementarmente, recomenda-se que sejam conduzidos no país estudos longitudinais, com o envolvimento de crianças nas amostras.

Job satisfaction and absenteeism among Brazilian teachers.

Introduction: Teachers, especially those in primary education, face unfavorable working conditions, which lead to job dissatisfaction and affect their physical and mental health, thus contributing to absenteeism. Objectives: To verify the association between lower job satisfaction and absenteeism due to short and long term health problems in elementary and hight school teachers. Methods: This observational, analytical, individual, cross-sectional, retrospective cohort study included 899 elementary and high school teachers. Absenteeism was determined by self-reported absences in the last 12 months for health reasons, categorized as short term (1-7 days) or long term (≥8 days). Job satisfaction was measured by the Occupational Stress Indicator scale, categorized as lower satisfaction (≤25th percentile) or higher satisfaction (>25th percentile). Multinomial logistic regression was used, and the odds ratio was calculated as a measure of association. Results: The majority of the teachers were women (68.3%) and were permanently employed (69.1%); the mean age was 42 (SD, 10) years. Women, younger teachers, permanent employees, those reporting chronic pain or illness, and those reporting a moderate/poor level of physical or mental work capacity had a higher risk of absenteeism. Lower job dissatisfaction was associated with short-term and long-term absenteeism. Job satisfaction was only related to short-term absenteeism after the adjustments made. Conclusions: There was an association between absenteeism and lower job satisfaction, which indicates that measures to improve job satisfaction are necessary.

Introdução: Professores, especialmente os da educação básica, têm enfrentado inúmeras condições desfavoráveis de trabalho, o que gera insatisfação no trabalho, com prejuízo à sua saúde física e mental, contribuindo para o absenteísmo. Objetivos: Verificar a associação entre menor satisfação no trabalho e absenteísmo por problema de saúde de curto e longo prazos em professores do ensino fundamental e médio. Métodos: Estudo observacional, analítico, individual, transversal, retrospectivo de coorte com professores do ensino fundamental e médio (n = 899). O absenteísmo foi determinado pelo relato de falta nos últimos 12 meses por motivo de saúde, categorizado em curto prazo (1 a 7 dias) e longo prazo (8 dias ou mais). A satisfação no trabalho foi mensurada pela escala Occupational Stress Indicator, categorizada em menor satisfação (até o percentil 25) e maior satisfação (acima do percentil 25). Foi utilizada a regressão logística multinomial, com cálculo da odds ratio como medida de associação. Resultados: Dos professores avaliados, a maioria era do sexo feminino (68,3%), tinham média de idade de 42 ± 10 anos e apresentavam vínculo estatutário (69,1%). As chances de absenteísmo foram maiores entre os professores do sexo feminino, mais jovens, com vínculo estatutário, que referiram dor ou doença crônica e que relataram capacidade física ou mental para o trabalho moderada/baixa. Professores menos satisfeitos apresentaram maiores chances de absenteísmo de curto e de longo prazo. Após os ajustes realizados, a satisfação no trabalho associou-se apenas ao absenteísmo de curto prazo. Conclusões: Houve associação entre absenteísmo e menor satisfação no trabalho, tornando-se necessárias medidas para melhorar a satisfação no trabalho.