Constructing content validity of clinical nurse specialist core competencies: exploratory sequential mixed-method study

Rational The demand to increase nursing competence is brought on by the requirement of safe, accessible and more effective use of healthcare provider expertise. Clinical nurse specialist competency development dates back to the late 20th century; however, an examination of the literature reveals a lack of research and discussion to support the competency development. Objectives To describe the formulation and validation process of the clinical nurse specialist core competencies. Design Exploratory sequential mixed-method design. Methods This mixed-method study, conducted between 2013 and 2017 in Finland, involved four phases: I) a Policy Delphi study (n = 25, n = 22, n = 19); II) cross-mapping of preliminary competency criteria against international competency sets; III) content validity study of expanded competency criteria (n = 7, n = 10); and IV) verification of competency criteria with practicing CNSs (n = 16). Data were analysed by both qualitative and quantitative analysis methods. Results Seventy-four preliminary clinical nurse competency criteria were formulated in the first phase of the study. Through cross-mapping the competencies against the US and Canadian clinical nurse specialist competency sets, they were further concised to 61 criteria. The examination of Content Validity Indexes and experts' comments led to the clarification and consequent inclusion of 50 criteria to the final scale, with Scale Content Validity Index Average of 0.94. The competency criteria were evaluated to be a solid set with potential to clarify and uniform the clinical nurse specialist roles. Conclusions Through a rigorous research process, validated clinical nurse specialist competency criteria were formed with a high Scale Content Validity Index Average. The results allude to the potential of formulating international competency criteria to support global role clarity and understanding. However, further research is needed to validate the content and construct of the formulated competencies with a larger population across countries.