This is mostly for the PT’s and PT students. It has been a while since I posted anything, and for that I apologize. Not an excuse, but our daughter is sick and I don’t have the time to walk away from family for even 20 minutes to read. This is an old paper that I wrote years ago, while still in the DPT program. Enjoy and if there are any questions, don’t hesitate to ask.
Beattie P, Nelson R. Clinical prediction rules: What are they and what do they tell us? Aus J Physio.2006.52:157-163.
1.”Historically clinicians have relied on expert opinion, experience, and intuition to determine which evaluative procedures and what interventions to choose.”
- “Clinical prediction rules may be thought of as the combining of relevant clnical findings to calcularte a numberic probability of the presence of a specific disorder or likelihood of an outcome, ie, they act as adjuncts to the evaluative process”
- To describe the potential role of CPR’s in PT practice and to suggest strategies for us to dtermine the appropriateness of using the CPR in daily practice.
When are CPR’s needed:
See the other citations as this article would only provide a secondary source for the information. More to come later on the works of McGinn et al and Dellito et al.
|Proposed use||Type of validity||Method of testing|
|Screening: prediction the likelihood of the presence of a specific medical or psychobehavioural condition||Criterion-referenced||Prospective, cross-sectional comparison of findings from clinical prediction rule to a “gold standard” that indicates the presence or absence of the condition|
|Prognosis: predicting the likelihood of a specific outcome||Predictive||Prospective, longitudinal comparison findings from clinical prediction rule to measures of change in patient status over time|
|Classification into treatment-based groups: predicting the likelihood of outcome when a specific intervention is administered||Prescriptive||Prospective, longitudinal, randomized, controlled design that compares outcomes following different interventions on subjects with the same score on the clinical prediction rule|
Before using a CPR, the clinician should be aware of the derivation method, the means for internal validity, the statistics (Sn, Sp, +LR) and the population for whom it is expected (external validity)