Validity of a first draft PROM (PROM-CR1) at the start of the outpatient cardiac rehabilitation programme

Abstract

Background/Aims A 40-item first draft PROM (PROM-CR1) had previously been developed for use in cardiac rehabilitation. This article details how PROM-CR1 was tested for item relevance, and for acceptability and validity when used at an initial CR outpatient appointment. Methods Cardiac rehabilitation staff rated the relevance of all 40 items. The PROM-CR1 was then piloted across 185 service users (mean age 67.24 years; 147 males/40 females; referred with a range of cardiac diagnoses) who completed the tool at their initial cardiac rehabilitation outpatient appointment. Results Analyses of item relevance and construct validity flagged nine items requiring removal from the tool; all other items and scores performed well in these tests. PROM-CR1 demonstrated good concurrent and discriminant validity, and its performance improved with the flagged items removed. Conclusions The 31-item version of PROM-CR1 will be re-tested when applied at the end of outpatient CR and refined into a finalised tool (PROM-CR) for clinical practice.