第二节平面向量的基本定理及坐标表示.ppt

Aldridge et al. BMC Medical Education 2012, 12:27
2-6920/12/27
RESEARCH ARTICLE Open Access
Dermatology undergraduate skin cancer training:
a disconnect between mendations, clinical
exposure petence
R Benjamin Aldridge, Susanne S Maxwell and Jonathan L Rees*
Abstract
Background: Skin cancers are the mon malignancies in Caucasian populations. Non-specialists are
responsible for the initial assessment of skin lesions and are required to act as the gatekeepers to dermatological
cancer services in many healthcare systems. The majority of such physicians receive very limited formal
undergraduate or postgraduate dermatology training. The British Association of Dermatologists (BAD) has produced
guidelines that list the lesions that students should be able to diagnose on graduation and the majority of UK
medical schools’ operate curricula in keeping with these. There is, however, virtually no evidence as to whether
petencies are being achieved. We set out to determine students’ competence at skin lesion diagnosis
and to quantify their clinical exposure to examples of such lesions during their dermatology attachment.
Methods: Three linked studies were undertaken. In the first, students’ competence was tested by randomized
slideshows of images containing the 16 lesions mended in the UK guidelines. Students’ accuracy was tested
at the beginning (Day 1) and end (Day 10) of their clinical placement, with a random sample of students retested
12 months later. Secondly, students’ exposure to these lesions was recorded during their attachments. Finally a
survey of the additional dermatological resources used by the students was undertaken.
Results: Study 1: Students’ diagnostic accuracy increased from 11% on Day 1 to 33% on Day 10 (effect size +). After
12 months half of this effect had disappeared and the students accuracy had dropped to 24%. Study 2: Students’
exposure to the mended lesions was poor with 82% not even witnessing a single