Publications by authors named "Lawrence So"

Importance: Spanish-speaking participants are underrepresented in clinical trials, limiting study generalizability and contributing to ongoing health inequity. The Comparison of Outcomes of Antibiotic Drugs and Appendectomy (CODA) trial intentionally included Spanish-speaking participants.

Objective: To describe trial participation and compare clinical and patient-reported outcomes among Spanish-speaking and English-speaking participants with acute appendicitis randomized to antibiotics.

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Importance: A patient's belief in the likely success of a treatment may influence outcomes, but this has been understudied in surgical trials.

Objective: To examine the association between patients' baseline beliefs about the likelihood of treatment success with outcomes of antibiotics for appendicitis in the Comparison of Outcomes of Antibiotic Drugs and Appendectomy (CODA) trial.

Design, Setting, And Participants: This was a secondary analysis of the CODA randomized clinical trial.

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Objective: To compare secondary patient reported outcomes of perceptions of treatment success and function for patients treated for appendicitis with appendectomy vs. antibiotics at 30 days.

Summary Background Data: The Comparison of Outcomes of antibiotic Drugs and Appendectomy trial found antibiotics noninferior to appendectomy based on 30-day health status.

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Article Synopsis
  • The CODA trial found that outpatient management of acute appendicitis using antibiotics is a safe and effective alternative to immediate surgery, with about 50% of participants discharged within 24 hours.
  • The cohort study analyzed data from 776 adults with imaging-confirmed appendicitis who received antibiotics and assessed the safety and outcomes of outpatient versus inpatient care.
  • Results indicated that most treated participants managed their appendicitis without needing surgery, and outpatient management could reduce hospital visits, increase convenience, and lower healthcare costs.
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Importance: For adults with appendicitis, several randomized clinical trials have demonstrated that antibiotics are an effective alternative to appendectomy. However, it remains unknown how the characteristics of patients in such trials compare with those of patients who select their treatment and whether outcomes differ.

Objective: To compare participants in the Comparison of Outcomes of Antibiotic Drugs and Appendectomy (CODA) randomized clinical trial (RCT) with a parallel cohort study of participants who declined randomization and self-selected treatment.

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Understanding what matters most to patients can help guide research in a direction that is best situated to provide evidence that is responsive to their core concerns. This can better inform the treatment decision-making process for patients and their physicians. The Aortic Dissection (AD) Collaborative built a collaborative AD research infrastructure involving patients and other stakeholders to facilitate patient-centered outcomes research training, support, and networking among those affected by AD.

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Aortic dissection (AD) is a life-changing event that is often accompanied by a loss of normal quality of life. Survivors of AD go on to have a chronic disease that requires lifestyle modification, medical management, and surgical repair of the aorta. Clinical care includes multiple disciplines, health care settings, and often different geographic locations.

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Aortic dissection (AD) is a life-threatening rare disease that occurs as a spontaneous tear in the wall of the aorta. Survivors of AD go on to have a chronic disease process that requires lifelong follow-up and management. Although the COVID-19 pandemic has strained health systems and impacted practice in the United States, the effects of these impacts on people living with or at risk for AD is not well understood.

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Importance: Use of antibiotics for the treatment of appendicitis is safe and has been found to be noninferior to appendectomy based on self-reported health status at 30 days. Identifying patient characteristics associated with a greater likelihood of appendectomy within 30 days in those who initiate antibiotics could support more individualized decision-making.

Objective: To assess patient factors associated with undergoing appendectomy within 30 days of initiating antibiotics for appendicitis.

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Background: Patient-centered approaches to research design are particularly important for diseases with complex treatment decision-making, such as recurrent, high-grade non-muscle-invasive bladder cancer (NMIBC). The objective of this article is to describe patient and public involvement (PPI) in designing a large, pragmatic observational trial and to articulate barriers, challenges, and lessons learned for future design.

Methods: Through multistakeholder involvement, a large, pragmatic observational trial was designed to investigate the outcomes of high-risk, recurrent NMIBC, and it was titled Comparison of Intravesical Therapy and Surgery as Treatment Options for Bladder Cancer (CISTO).

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Objective: The growing prevalence of chronic conditions requiring changes in lifestyle and at-home self-management has increased interest in and need for supplementing clinic visits with data generated by patients outside the clinic. Patient-generated health data (PGHD) support the ability to diagnose and manage chronic conditions, to improve health outcomes, and have the potential to facilitate more "connected health" between patients and their care teams; however, health systems have been slow to adopt PGHD use in clinical care.

Materials And Methods: We surveyed current and potential users of PGHD to catalog how PGHD is integrated into clinical care at an academic health center.

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Background: By participating in priority-setting activities in research, patients and members of the public help ensure that important questions are incorporated into future research agendas. Surveys, focus groups, and online crowdsourcing are increasingly used to obtain input, yet little is known about how they compare for prioritizing research topics. To address this gap, the Study of Methods for Assessing Research Topic Elicitation and pRioritization (SMARTER) evaluated participant satisfaction with the engagement experience across three prioritization activities.

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Background: Wearable devices, mobile health apps, and geolocation technologies place the ability to track, monitor and report data in the individuals' hands - or on their bodies. These innovations create an opportunity for "connected health," where individuals collect data outside of the healthcare encounter and report it to care providers. Collection of such patient-generated health data (PGHD) has the potential to impact the delivery of healthcare through remote monitoring, and by allowing patients and healthcare teams to provide targeted and efficient care that aligns with the health status of individual patients.

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Background: The involvement of patients in research better aligns evidence generation to the gaps that patients themselves face when making decisions about health care. However, obtaining patients' perspectives is challenging. Amazon's Mechanical Turk (MTurk) has gained popularity over the past decade as a crowdsourcing platform to reach large numbers of individuals to perform tasks for a small reward for the respondent, at small cost to the investigator.

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Background: Involving patients as partners in research is a defining characteristic of patient-centered outcomes research (PCOR). While patients' experiential knowledge of a health condition or treatment may yield research priorities not reflected by researchers and policy makers, the methods for identifying and effectively collaborating with patients are still evolving. Patient registries and crowdsourcing may offer ease of access and convenience to both researchers and patients.

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Purpose: A cornerstone of patient-centered outcome research is direct patient involvement throughout the research process. Identifying and prioritizing research topics is a critical but often overlooked point for involvement, as it guides what research questions are asked. We assess the feasibility of involving individuals with low back pain in identifying and prioritizing research topics using two approaches: an existing patient registry and an online crowdsourcing platform.

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Breast-cancer-specific tools that measure health-related quality of life (HRQOL) were developed for use in research or clinical practice, and little is known about these tools' performance ability for quality improvement. Furthermore, existing tools may not fully reflect all issues that contribute to quality care as seen by patients. Work is needed to identify and validate patient-reported outcome measures for use in quality improvement in breast cancer surgical care.

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Objectives: This study investigates improvements as well as declines in health with four health measures for immigrants and native-born residents.

Methods: We used longitudinal data from Statistics Canada National Population Health Survey, which represented 8,474 native-born residents and 1,339 immigrants from 1994/95 to 2004/05. Multinomial logistic regressions were used to evaluate self-perceived health, chronic condition, health utility index, and body mass index.

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Background: Self-reported prescription medication use data is often used to measure differences across ethnic groups, but its accuracy may differ across ethnic groups.

Objective: We compared ethnic groups' self-reported medication use to their administrative records for respondents with diabetes, hypertension, and asthma.

Methods: We linked the Canadian Community Health Survey to administrative prescription drug records for 17,191 respondents in British Columbia, Canada.

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Background: Intravenous immune globulin (IVIG) is an expensive and sometimes scarce blood product that carries some risk. It may often be used inappropriately. We evaluated the appropriateness of IVIG use before and after the introduction of an utilization control program to reduce inappropriate use.

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The validity of administrative data may be vulnerable to how well physicians document medical charts. The objective of this study is to determine the relationship between chart documentation quality and the validity of administrative data. The charts for patients who underwent carotid endarterectomy were re-abstracted and rated for the quality of documentation.

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Molecules of n-alkanethiols with methyl head groups typically form well-ordered monolayers during solution self-assembly for a wide range of experimental conditions. However, we have consistently observed that, for either carboxylic acid or thiol-terminated n-alkanethiols, under certain conditions nanografted patterns are generated with a thickness corresponding precisely to a double layer. To investigate the role of head groups for solution self-assembly, designed patterns of omega-functionalized n-alkanethiols were nanografted with systematic changes in concentration.

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Background: Differences in the prevalence of cardiovascular disease and associated risk factors have been noted across ethnic groups both within and between countries. The Canadian population is becoming increasingly diverse because of immigration. Understanding ethnic differences in cardiovascular risk factors is critically important in planning appropriate prevention strategies for the country's rapidly changing population.

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