Calvin K. L. Or

Learn More
OBJECTIVE With the advent of personal health records and other patient-focused health technologies, there is a growing need to better understand factors that contribute to acceptance and use of such innovations. In this study, we employed the Unified Theory of Acceptance and Use of Technology as the basis for determining what predicts patients' acceptance(More)
A systematic literature review was performed to identify variables promoting consumer health information technology (CHIT) acceptance among patients. The electronic bibliographic databases Web of Science, Business Source Elite, CINAHL, Communication and Mass Media Complete, MEDLINE, PsycArticles, and PsycInfo were searched. A cited reference search of(More)
The goal of improving patient safety has led to a number of paradigms for directing improvement efforts. The main paradigms to date have focused on reducing injuries, reducing errors, or improving evidence based practice. In this paper a human factors engineering paradigm is proposed that focuses on designing systems to improve the performance of healthcare(More)
With the proliferation of macroergonomic field research, it is time to carefully examine how such research should be managed and implemented. We argue that the importance of attending to high-quality implementation of field research is equal to that of methodological rigor. One way to systematically manage the implementation process is to adopt a change(More)
PURPOSE To assess whether the use of consumer health information technologies (CHITs) improves outcomes in the patient self-management of diabetes. METHOD The evidence from randomized controlled trials (RCTs) on the effects of CHITs on patient outcomes was analyzed using either meta-analysis or a narrative synthesis approach. A systematic search of seven(More)
  • Adam Parusi Nski, Theorem, K R Let, C Or, F Let
  • 2008
We show that every-constant family of isolated hypersurface singularities of type F (x; t) = f(x) + tg(x), where t is a parameter, is topologically trivial. The proof uses only the curve selection lemma and hence, for an appropriately translated statement, also works over the reals and for some families of non-isolated singularities. Some applications to(More)
BACKGROUND Usability can influence patients' acceptance and adoption of a health information technology. However, little research has been conducted to study the usability of a self-management health care system, especially one geared toward elderly patients. OBJECTIVE This usability study evaluated a new computer-based self-management system interface(More)
This study was performed to evaluate the effects of a patient-centered, tablet computer-based self-monitoring system for chronic disease care. A 3-month randomized controlled pilot trial was conducted to compare the use of a computer-based self-monitoring system in disease self-care (intervention group; n = 33) with a conventional self-monitoring method(More)
BACKGROUND Despite mandates and incentives for electronic health record (EHR) adoption, little is known about factors predicting physicians' satisfaction following EHR implementation. OBJECTIVE To measure predictors of physician satisfaction following EHR adoption. METHODS A total of 163 physicians completed a mailed survey before and after EHR(More)
We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) which had evaluated self-management health information technology (SMHIT) for glycaemic control in patients with diabetes. A total of 43 RCTs was identified, which reported on 52 control-intervention comparisons. The glycosylated haemoglobin (HbA1c) data were pooled(More)