RESUMEN
BACKGROUND: Hospitalisation rates for inflammatory bowel disease (IBD) vary across the world. We aimed to investigate temporal patterns of hospitalisation for IBD in member countries of the Organisation for Economic Co-operation and Development (OECD). METHODS: From the OECD database, we assessed IBD-related hospitalisation rates (expressed as annual rates per 100â000 inhabitants) for 34 countries from 1990 to 2016. We calculated mean hospitalisation rates for the period 2010-15 and used joinpoint regression models to calculate average annual percentage changes with 95% CIs. FINDINGS: Mean hospitalisation rates for IBD from 2010 to 2015 were highest in North America (eg, 33·9 per 100â000 in the USA), Europe (eg, 72·9 per 100â000 in Austria), and Oceania (eg, 31·5 per 100â000 in Australia). Hospitalisation rates for IBD were stabilising or decreasing over time in many countries in these regions but increasing in others. Countries in Asia and Latin America and the Caribbean had the lowest IBD-related hospitalisation rates but the greatest increases in rates over time. For example, Turkey had an annual hospitalisation rate of 10·8 per 100â000 inhabitants and an average annual percentage change of 10·4% (95% CI 5·2-15·9). Similarly, Chile had an annual hospitalisation rate of 9·0 per 100â000 inhabitants and an average annual percentage change of 5·9% (4·9-7·0). INTERPRETATION: Hospitalisation rates for IBD are high in western countries but are typically stabilising or decreasing, whereas rates in many newly industrialised countries are rapidly increasing, which reflects the known increase in IBD prevalence in these countries. Potential explanations for these trends include changes in the epidemiology of IBD, health-care delivery, and infrastructure in these countries, as well as overall country-specific patterns in hospitalisations and differences between countries in data collection methods. FUNDING: None.
Asunto(s)
Hospitalización/tendencias , Enfermedades Inflamatorias del Intestino/epidemiología , Organización para la Cooperación y el Desarrollo Económico/estadística & datos numéricos , Asia/epidemiología , Australia/epidemiología , Austria/epidemiología , Región del Caribe/epidemiología , Chile/epidemiología , Colitis Ulcerosa/epidemiología , Enfermedad de Crohn/epidemiología , Atención a la Salud/tendencias , Hospitalización/estadística & datos numéricos , Humanos , Enfermedades Inflamatorias del Intestino/economía , América Latina/epidemiología , Organización para la Cooperación y el Desarrollo Económico/organización & administración , Aceptación de la Atención de Salud/estadística & datos numéricos , Alta del Paciente/estadística & datos numéricos , Alta del Paciente/tendencias , Prevalencia , Factores de Tiempo , Turquía/epidemiología , Estados Unidos/epidemiologíaRESUMEN
In this article, we have examined the hypothesis of convergence of renewable energy consumption in 27 OECD countries. However, instead of relying on classical techniques, which are based on the dichotomy between stationarity I(0) and nonstationarity I(1), we consider a more flexible approach based on fractional integration. We employ both parametric and semiparametric techniques. Using parametric methods, evidence of convergence is found in the cases of Mexico, Switzerland and Sweden along with the USA, Portugal, the Czech Republic, South Korea and Spain, and employing semiparametric approaches, we found evidence of convergence in all these eight countries along with Australia, France, Japan, Greece, Italy and Poland. For the remaining 13 countries, even though the orders of integration of the series are smaller than one in all cases except Germany, the confidence intervals are so wide that we cannot reject the hypothesis of unit roots thus not finding support for the hypothesis of convergence.