Socioeconomic inequalities in self-assessed health and mental health in Barcelona, 2001-2016

Previous research has found persistent socioeconomic inequalities in health outcomes at the national level, with different patterns after the economic crisis. However, inequalities in urban areas are also important. This study analyses socioeconomic inequalities in self-assessed health and mental health in the city of Barcelona. Repeated cross-sectional design using quinquennial data from the Barcelona Health Surveys carried out in 2001, 2006, 2011 and 2016 for the population older than 22 years. Robust Poisson regressions models were used to compute socioeconomic gradients and relative (RII) and slope indexes of inequality (SII) by occupational social class, with stratification by sex. RII and SII were also obtained with further adjustment by employment situation. A consistent socioeconomic gradient was found for all years except for 2011. Relative and absolute inequalities followed a V-shape, showing a drop during the economic crisis but widening thereafter to recover pre-crisis figures for self-assessed health and widening for mental health, in both relative and absolute terms in 2016. Adjustment for employment situation reduces inequalities but a large part of these inequalities remains, with variability across years. The lasting effects of the 2008 economic crisis and the austerity programmes imposed since then may have contributed to the persistence of socioeconomic inequalities in self-assessed health and the widening of those for mental health. La investigación previa ha reportado desigualdades socioeconómicas persistentes en salud en el territorio nacional, con diferentes patrones después de la crisis económica. Sin embargo, las desigualdades en las áreas urbanas son también importantes. Este estudio analiza las desigualdades en salud autopercibida y salud mental en la ciudad de Barcelona. Diseño de corte transversal con datos quinquenales de la Encuesta de Salud de Barcelona llevada a cabo en 2001, 2006, 2011 y 2016 para la población mayor de 22 años. Se utilizan modelos de regresión robusta de Poisson para calcular el gradiente social y los riesgos relativo (RII) y absoluto de desigualdad (SII) por clase social ocupacional, estratificando por sexo. El RII y el SII se obtienen también ajustando adicionalmente por situación laboral. Se encuentra un gradiente social para todos los años excepto para 2011. Se observan desigualdades relativas y absolutas en forma de V para la salud autopercibida, con una reducción durante la crisis económica, pero rec