The Pharmacist Supply in the United States, 1994-2009: A Population Ecology Perspective

Researchers have noted a number of environmental factors affecting the pharmacist supply in the U. S. This inquiry explores these factors within the context of the population ecology theoretical framework. In addition to the volume of prescriptions, additional environmental factors believed to have a discernible impact on the pharmacist supply include, the number of physicians, size of the business industry and insurance coverage. Physicians are the primary healthcare providers that generate prescriptions to be filled. Consequently, the number of physicians is believed to be a significant environmental factor affecting the supply of pharmacists.;The population ecology theoretical framework has been used in the study of restaurants, newspapers, and physicians and their interactions with their surrounding environments. The theoretical framework proved to be beneficial in the exploration of the pharmacist supply vis-a-vis the environment. The primary constructs in the population ecology theory are carrying capacity and density. Carrying capacity consists of two sub-constructs: munificence and concentration. Density points to the current pharmacists supply and its impact on the future pharmacist supply.;Numerous variables have been used in previous empirical studies of the pharmacist supply. Among the indicators of munificence in previous studies in the extant literature on pharmacist supply are total population, elderly population, hospitals, and median household income. In the present inquiry, total population was found to be a statistically significant environmental factor affecting the pharmacist supply. This was hypothesized that there is a positive linear relationship between total population and the pharmacist supply.;The number of hospitals with pharmacies was also found to be a statistically significant environmental factor affecting the pharmacist supply. Hospital pharmacies are important venues wherein pharmacists can demonstrate their unique expertise and make discernible contributions to desirable health care outcomes when pharmaceutical interventions are required. In light of this empirical finding, it seems reasonable that a growth in hospital pharmacies corresponds with an increased demand for pharmacists (Kaboli, Hoth, McClimon, & Schnipper, 2006).;Measures of the concentration dimension included the number of hospital beds per 100,000 population, employer volume and size and the number of insured. The only putative indicator of concentration that was found to be statistically significant in this inquiry was the number of employers with 20 or more employees. Previous pharmacist supply was found to be a significant environmental factor affecting the pharmacist supply in the future. Thus, density is a significant environmental factor affecting the pharmacist supply. Five of the 13 hypotheses tested in this inquiry were accepted. These findings are consistent with related findings in the extant literature on the pharmacist supply.;Empirical findings from this inquiry are believed to make significant contributions to the literature on the pharmacist supply. The population ecology theoretical framework appears to be a suitable tool for exploring environmental factors affecting the pharmacist supply. Recommendations for future research are presented in the final chapter. (Abstract shortened by UMI.).