Evolution of the mid range theory of comfort for outcomes research

The developmental stages of the mid range theory of comfort are discussed in this article, which includes its philosophic orientation and its inductive, deductive, and retroductive reasoning. Other steps that are described are the concept analysis of comfort, the operationalization of the outcome of patient comfort, the application of the theory in previous nursing studies, and the evaluation of the current theory as it has been adapted for outcomes research. This article is a guide that shows how a concept grows, becomes embedded in theory, is tested, and is adapted for the rapidly changing health care environment. The theory of comfort also offers a way to reconceptualize nurse productivity.