PubMed · 15912835
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Jörg Reichert. 2005. [Experiences from general practice].. https://pubmed.ncbi.nlm.nih.gov/15912835/
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A new test for the detection of publication bias in meta-analysis with sparse binary data is proposed. The test statistic is based on observed and expected cell frequencies, and the variance of the observed cell frequencies. These quantities are utilized in a rank correlation test. Type I error rate and power of the test are evaluated in simulations; results are compared to those of two other commonly used test procedures. Sample sizes were generated according to findings in a survey of eight German medical journals. Simulation results indicate that, in contrast to existing test procedures, the new test holds the prescribed significance level when data are sparse. However, the power of all tests is low in many situations of practical importance.
Improvements in patient care and longevity on dialysis programmes together with the increased numbers of patients referred for renal replacement therapy will inevitably result in enlarging numbers of subjects with functioning renal transplants. While this translates to a boon for the patients in terms of survival and quality of life, a very real problem has begun to emerge, that of post-transplantation anaemia (PTA). The prevalence of this condition has been estimated by several studies as varying somewhere between one third and two thirds of all patients, with the same attendant problems as anaemia in the context of chronic kidney disease. PTA is multifactorial in origin and involves interplay between a number of risk factors, not least of all the immunosuppressive protocol. It is the purpose of this article to briefly review the contribution from transplant immunosuppression to PTA and to assess its likely effects on and treatment options for patients.
Three flat-coated retrievers with a regenerative anaemia were examined. They were hypoproteinaemic suggesting that the anaemia might be due to blood loss, but it was not possible to identify a site of haemorrhage. All three had splenomegaly with splenic abnormalities apparent on ultrasonography. Ultimately all three animals were shown to have a histiocytic sarcoma involving the spleen and other tissues. A fourth flat-coated retriever with anaemia, hypoproteinaemia and an abdominal mass was also diagnosed with a histiocytic sarcoma of the spleen following splenectomy. It is postulated that the dogs' anaemia was due to erythrophagocytosis, either directly by neoplastic cells or by reactive macrophages.