Patrick J. O'Connor

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The neural mechanisms underlying feelings of fatigue are poorly understood. The primary purpose of the study was to use functional magnetic resonance imaging (fMRI) to determine the association between feelings of mental fatigue and blood oxygen level dependent (BOLD) brain responses during a mentally fatiguing cognitive task. Healthy, non-fatigued controls(More)
PURPOSE We wanted to test whether improvements in care quality were correlated with changes in the Chronic Care Model (CCM) in a large medical group that attempted to implement the CCM. METHODS The leaders of 17 primary care clinics in this medical group completed the Assessing Chronic Illness Care (ACIC) survey measure of CCM implementation before and(More)
1 OBJECTIVE — The purpose of this study was to determine whether implementation of a multicomponent organizational intervention can produce significant change in diabetes care and outcomes in community primary care practices. RESEARCH DESIGN AND METHODS — This was a group-randomized, controlled clinical trial evaluating the practical effectiveness of a(More)
This paper evaluates four highly cited measures of energy and fatigue moods. Substantial experimental and correlational evidence supports the conclusion that scores from the vitality scale of the SF-36 Health Survey can provide a valid measure of the recalled frequency of month-long feelings of energy and fatigue. Substantial experimental and correlational(More)
OBJECTIVE To assess two physician learning interventions designed to improve safety and quality of diabetes care delivered by primary care physicians (PCPs). RESEARCH DESIGN AND METHODS This group randomized clinical trial included 57 consenting PCPs and their 2,020 eligible adult patients with diabetes. Physicians were randomized to no intervention(More)
INTRODUCTION We studied variance in glycated hemoglobin (HbA1c) values among adults with diabetes to identify variation in quality of diabetes care at the levels of patient, physician, and clinic, and to identify which levels contribute the most to variation and which variables at each level are related to quality of diabetes care. METHODS Study subjects(More)
12 OVERVIEW—Just as treatment guidelines for diabetes care were at the forefront of medical guideline development (1), diabetes has been a prominent focus of performance measurement and quality improvement initiatives for well over a decade. However, the constraints of pre-electronic health records (EHRs) data systems have consistently limited the clinical(More)
OBJECTIVE To assess whether providing customized clinical information to patients and physicians improves safety or quality of diabetes care. RESEARCH DESIGN AND METHODS Study subjects included 123 primary care physicians and 3,703 eligible adult diabetic patients with elevated A1C or LDL cholesterol, who were randomly assigned to receive customized(More)
UNLABELLED This double-blind, placebo-controlled, repeated-measures experiment examined the effects of a 5 mg . kg(-1) body weight dose of caffeine on delayed-onset muscle pain intensity and force loss in response to 64 eccentric actions of the dominant quadriceps induced by electrical stimulation. Low caffeine-consuming college-aged females (n = 9)(More)