Christoph M Ziegler

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BACKGROUND AND PURPOSE Chronic infectious diseases may increase the risk of stroke. We investigated whether periodontal disease, including periodontitis and gingivitis, is a risk factor for cerebral ischemia. METHODS We performed a case-control study with 303 patients examined within 7 days after acute ischemic stroke or transient ischemic attack, 300(More)
Results from instrumented gait analysis vary between test situations. Subject characteristics and the biomechanical model can influence the total amount of variability. The purpose of this study was to quantify reliability of gait data in general, and with respect to the applied model, and investigated population group. Reliability was compared between a(More)
The ameloblastic fibro-odontoma is a rare mixed odontogenic tumor. It occurs predominantly in children and young adults with no sex predilection and locates most often in the posterior segment of the mandible. A painless swelling is the most common clinical sign. Radiologically, ameloblastic fibro-odontoma shows a circumscribed radiolucency, which contains(More)
Medical diagnostic-and therapy-decisions are directly or indirectly determined by prognoses based on subjective impression and experience. Beside the subjective assessment of the doctors, mathematical models can be developed and validated for the prognosis. In practice, the outcome is frequently dichotomized so that multiple logistic regression models will(More)
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