Factors influencing the adoption of Internet banking
Journal of the AIS
Exploring Hospitals' Adoption of Information Technology
Journal of Medical Systems
A Case for Using Real Options Pricing Analysis to Evaluate Information Technology Project Investment
Information Systems Research
Antecedents of B2C Channel Satisfaction and Preference: Validating e-Commerce Metrics
Information Systems Research
A contingency perspective on internet adoption and competitive advantage
European Journal of Information Systems
Portals: toward an application framework for interoperability
Communications of the ACM - Voting systems
Electronic commerce adoption: an empirical study of small and medium US businesses
Information and Management
Information technology payoff in the health-care industry: a longitudinal study
Journal of Management Information Systems - Special issue: Impacts of information technology investment on organizational performance
Journal of Management Information Systems - Special section: Exploring the outlands of the MIS discipline
Organizational and Environmental Determinants of Hospital EMR Adoption: A National Study
Journal of Medical Systems
Information Systems Management
Evaluating contingency approaches to information systems design
International Journal of Information Management: The Journal for Information Professionals
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Web-based portals extend many convenient and collaborative capabilities to consumers and are being adopted by small firms with ever greater frequency, especially in the context of health care. The early adoption of patient portals by ambulatory-care clinics outpatient health providers presents a unique opportunity to more fully understand the characteristics of supply-side adopters in a context where firms ambulatory-care clinics are extending digital services to consumers patients. Using diffusion of innovations literature and contingency theory as the theoretical base, we expand upon the firm characteristics traditionally considered to be predictors of adoption e.g., firm size, slack resources, competition, capabilities, and management support and examine how demand contingencies, service contingencies, and learning externality contingencies affect patient portal adoption by ambulatory-care clinics in the United States. We find that early adopters often have a structure in place that provides support for innovations e.g., part of integrated delivery systems, as would be predicted by diffusion of innovation theory. We also find, though, that service contingencies associated with continuity of care, learning externality contingencies associated with local influences, and select demand contingencies associated with the local market significantly influence patient portal adoption decisions. Our findings suggest that the adoption and diffusion of patient portals may be affected by more than traditionally considered "dominant" firm characteristics and provide insights into how such customer-facing systems may be affected by contingent factors.