Background: The aim of this study is to analyze interobserver "reproductiveness" between clinical nurses in gerontology and residents in family medicine in their first contact with the Barthel Index (BI).
Materials and methods: One hundred patients were assessed. BI at two weeks before admission was scored by a patient or carer interview. Eighteen patients were excluded because interviews were not completed.
Results: Mean BI of 82 patient included, assessed by nurses was 87.3 and by residents 88.2. In 40 patients some differences in the mean values of BI were observed. When analyzing the overall BI score the agreement was high (r=0.793) but interobserver agreement was low (kappa<0.4) in some fields such as eating, dressing and transfers and medium in others (kappa from 0.40 to 0.75).
Conclusions: Low reproductiviness interobserver in some patients of the BI when clinical nurses in gerontology and residents in family medicine are compared suggest that they need specific training in functional capacity evaluation in order to improve the BI use.