Despite research to the contrary, it appears that software projects using hybrid software development methodologies may be slightly more successful than project using a strictly structured or agile approach.  94 United States software development Project Managers participated in a web-based survey.  Software project were classified as either structured, agile, or with some degree of hybridization.  Ten critical success factors were examined to determine the impact of the software development methodology utilized during the project on each success factor.  The results suggest that Project Managers have adapted a hybrid methodology in order to increase the probability of success as defined by these critical success factors.