Download PDF by Simon Paterson-Brown: Core Topics in General and Emergency Surgery

By Simon Paterson-Brown

ISBN-10: 0702049646

ISBN-13: 9780702049644

Core issues quite often & Emergency Surgery meets the desires of surgeons in larger education and practicing experts for a modern and evidence-based account of this sub-specialty that's proper to their common surgical perform. it's a sensible reference resource incorporating the most up-tp-date info on fresh advancements, administration concerns and operative methods. The textual content is punctiliously referenced and supported by way of evidence-based thoughts at any place attainable, distinguishing among powerful proof to help a end, and proof suggesting suggestion could be reached at the stability of possibilities.

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Extra info for Core Topics in General and Emergency Surgery

Sample text

Reliability refers to whether the instrument will be reproducible, such that if applied in different settings or circumstances to the same unchanged population then the same results should be achieved. This has particular implications for studies using instruments to derive longitudinal data on a particular sample of patients. In such circumstances, we need to be confident that observed changes over a given time period reflect actual change. Test–retest reliability is an important consideration and is assessed by making repeated assessments under the same circumstances at differing points in time and comparing the results using correlations or differences.

19 Four of the most frequently used instruments are discussed in more detail below. 20 The present measure has five dimensions, whereas the original version had six. Patients are classified by the completion of a five-item questionnaire. The EuroQol is a brief, easy-to-use questionnaire of two pages. It can be made even simpler by using the onepage descriptive classification. 19 The five dimensions of the EQ-5D comprise mobility, selfcare, usual activities, pain/discomfort and anxiety/ depression.

A more appropriate measure would be to assess improvement in symptoms or quality of life. It is also necessary to highlight the effect that differences in case mix can have on the mortality rate. For example, there is a tendency in studies relating workload to outcome for the results to be reported for the whole sample of patients. It is important to be aware that results reported in this way may be misleading as no account is taken of the diversity of patient characteristics that may be contained in such a sample.

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Core Topics in General and Emergency Surgery by Simon Paterson-Brown


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