[Utilization of Medical Rehabilitation Services in Germany: A Comparative Analysis of Survey and Routine Data]

BACKGROUND

Population ageing leads to an increase in age-related diseases. Consequently, the need for medical rehabilitation services is also rising. Rehabilitation service in Germany is offered by several rehabilitation carriers. There is no homogeneous rehabilitation statistics, resulting in insufficient data. This paper analyses utilization of medical rehabilitation services in Germany. It uses data from a representative population-based health survey. The results were extrapolated to the general population in Germany and compared with routine data.

METHODS

Survey data used were those of the German Health Interview and Examination Survey for Adults (DEGS1) with 7 988 participants. Utilization rates were extrapolated to the general population. Routine data sources are the diagnostic data of the Federal Statistical Office on patients using prevention or rehabilitation facilities. Further data sources are the published statistics of the rehabilitation carriers. In order to compute the total number of rehabilitation cases, where data were lacking in the statistics of the rehabilitation carriers, an estimate was made.

RESULTS

The analysis of the different data sources shows similar results. In 2010, there were approximately 2.2 million rehabilitation cases in Germany. Around 10% of rehabilitation measures were carried out in the ambulatory setting. Analyses of structural characteristics in the routine data are possible but not recommendable because of bias in the data.

CONCLUSIONS

Without detailed data on age structure and trends, challenges of demographic changes and changes in the illness spectrum cannot be adequately described. Because of a lack of sufficient diagnosis-based data, statements on the appropriateness of medical rehabilitation services offered by rehabilitation carriers cannot be made.

Band-Gap Widening at the Cu(In,Ga)(S,Se)2 Surface: A Novel Determination Approach Using Reflection Electron Energy Loss Spectroscopy

Using reflection electron energy loss spectroscopy (REELS), we have investigated the optical properties at the surface of a chalcopyrite-based Cu(In,Ga)(S,Se)2 (CIGSSe) thin-film solar cell absorber, as well as an indium sulfide (InxSy) buffer layer before and after annealing. By fitting the characteristic inelastic scattering cross-section λK(E) to cross sections evaluated by the QUEELS-ε(k,ω)-REELS software package, we determine the surface dielectric function and optical properties of these samples. A comparison of the optical values at the surface of the InxSy film with bulk ellipsometry measurements indicates a good agreement between bulk- and surface-related optical properties. In contrast, the properties of the CIGSSe surface differ significantly from the bulk. In particular, a larger (surface) band gap than for bulk-sensitive measurements is observed, providing a complementary and independent confirmation of earlier photoelectron spectroscopy results. Finally, we derive the inelastic mean free path λ for electrons in InxSy, annealed InxSy, and CIGSSe at a kinetic energy of 1000 eV.