The proportion of variability at levels higher than patients is often found to be "low." Although low proportional variability may lead to poor measurement reliability, a number of authors further suggested that it also indicates a lack of potential for quality improvement. Few studies provided additional information to help determine whether variation was, nevertheless, clinically meaningful.

Background Patient satisfaction is one of the relevant indicators of quality of care; however, measuring patient satisfaction had been criticised. A major criticism is that many instruments are not reliable and/or valid. The instruments should have enough discriminative power for benchmarking of the results. Objective To develop a "core questionnaire for the assessment of patient satisfaction in academic hospitals" (COPS) that is reliable and appropriate for benchmarking patient satisfaction results. Conclusions COPS is shown to be a feasible and reliable instrument to measure the satisfaction of patients in Dutch academic hospitals. It allows comparison of hospitals and gives benchmark information on a hospital as well as data on specialty levels and previous measurements, including best practices.

We report a case of chagasic encephalitis diagnosed by 28S rRNA sequencing. The diagnosis of chagasic encephalitis is challenging, given the broad differential diagnosis for central nervous system lesions in immunocompromised patients and low sensitivity of traditional diagnostics. Sequencing should be part of the diagnostic armamentarium for potential chagasic encephalitis.