Development and validation of the satisfaction with pharmacist scale

To assess patients' satisfaction with pharmacists, seven questions were dev eloped with semistructured input from 5 pharmacy practice faculty members a nd 11 patients with cancer. The study identified 1617 English- and Spanish- speaking patients with cancer or human immunodeficiency virus infection or acquired immunodeficiency syndrome who participated in a multisite validati on of the Functional Assessment of Cancer Therapy Scale. Of these, 1124 had seen a pharmacist in the past 7 days and therefore were eligible; 608 spok e English and 516 Spanish. The seven items on the Satisfaction with Pharmac ist (SWiP) scale were rated on a five-point Likert scale (0 = not at all to 4 = very much). The reliability of the English and Spanish versions was ev aluated by Cronbach's alpha coefficients. The unidimensionality and constru ct validity were analyzed with the Rasch rating scale model. The alpha coef ficients for the English and Spanish versions were 0.90 and 0.92, respectiv ely. Rasch analyses of item responses showed that none of the items in eith er language was a misfit, which supported their ability to measure a unidim ensional construct. Item difficulty plots revealed that no item exhibited d ifferential functioning, indicating that the items performed the same in bo th languages. The SWiP scale has reliable and valid psychometric properties in English and Spanish and can be used to document the value of the pharma cist-patient relationship. It is easy to administer and is ready for furthe r use and evaluation to determine and document outcomes of pharmaceutical c are.