Patient management problems Issues of validity (original) (raw)
Patient management problems (PMP) are being used in medical examinations with increasing frequency despite evidence which throws doubt on their validity as measures of clinical competence. This study investigated the construct validity of a PMP constructed in both written and interview formats. Each test was administered to groups of students of different seniorities and to two groups of doctors, interns and post-interns. The pattern of scores for the different groups was not that expected of a valid test of competence. The most competent groups (the postinterns) generally scored less well on the calculated indices than the senior students and interns. These findings were similar for both formats of the test so cueing was not thought to be the major factor. It appears that the scoring system is at fault. A comparison of performance on the written and interview (uncued) formats showed that many more options were chosen by all groups tested on the written PMP. It was concluded that written PMPs cannot yet be regarded as a valid simulation of clinical performance. Although content validity is high this does not appear to be so for construct validity or concurrent validity.
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