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OBJECTIVES To investigate the impact of disease activity, the course of the disease, its treatment over time, comorbidities and traditional risk factors on survival. METHODS Data of the German biologics register RABBIT were used. Cox regression was applied to investigate the impact of time-varying covariates (disease activity as measured by the DAS28,(More)
BACKGROUND AND OBJECTIVE From the perspective of welfare economics, institutionalised long-term care (ILTC) is expensive and thus requires key figures. This article provides the population-based mean length of stay in ILTC, which is a meaningful measure for monitoring purposes. METHOD The Sullivan method was applied to official statistics on population(More)
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