David C. Chang

ORCID: 0000-0002-1414-1280
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About
Contact & Profiles
Research Areas
  • Cardiac, Anesthesia and Surgical Outcomes
  • Trauma and Emergency Care Studies
  • Healthcare Policy and Management
  • Pancreatic and Hepatic Oncology Research
  • Emergency and Acute Care Studies
  • Diversity and Career in Medicine
  • Colorectal Cancer Screening and Detection
  • Hip and Femur Fractures
  • Appendicitis Diagnosis and Management
  • Cardiac Arrhythmias and Treatments
  • Aortic aneurysm repair treatments
  • Atrial Fibrillation Management and Outcomes
  • Esophageal and GI Pathology
  • Gallbladder and Bile Duct Disorders
  • Body Contouring and Surgery
  • Bariatric Surgery and Outcomes
  • Global Health Workforce Issues
  • Hospital Admissions and Outcomes
  • Health Systems, Economic Evaluations, Quality of Life
  • Pelvic and Acetabular Injuries
  • Global Cancer Incidence and Screening
  • Diverticular Disease and Complications
  • Healthcare cost, quality, practices
  • Palliative Care and End-of-Life Issues
  • Injury Epidemiology and Prevention

Massachusetts General Hospital
2016-2025

Harvard University
2016-2025

Peter MacCallum Cancer Centre
2025

The University of Melbourne
2025

Tufts University
2016-2024

New England Baptist Hospital
2022-2024

University of Massachusetts Chan Medical School
2024

Uniformed Services University of the Health Sciences
2024

Tufts Medical Center
2020-2024

Alpha and Omega Semiconductor (United States)
2024

Unintentional falls are a common cause of severe injury in the elderly population. By introducing small, noninvasive sensor motes conjunction with wireless network, Ivy Project aims to provide path towards more independent living for elderly. Using small device worn on waist and network fixed home environment, we can detect occurrence fall location victim. Low-cost low-power MEMS accelerometers used while RF signal strength is locate person.

10.1109/iembs.2005.1617246 article EN 2005-01-01

To determine the effect of introduction low dose computed tomography screening in 2013 on lung cancer stage shift, survival, and disparities diagnosed United States.Quasi-experimental study using Joinpoint modeling, multivariable ordinal logistic regression, Cox proportional hazards modeling.US National Cancer Database Surveillance Epidemiology End Results program database.Patients aged 45-80 years as having non-small cell (NSCLC) between 1 January 2010 31 December 2018.Annual per cent...

10.1136/bmj-2021-069008 article EN cc-by-nc BMJ 2022-03-30

<h3>Objective</h3> To determine whether age bias is a factor in triage errors. <h3>Design</h3> Retrospective analysis of 10 years (1995-2004) prospectively collected data the statewide Maryland Ambulance Information System followed by surveys emergency medical services (EMS) and trauma center personnel at regional EMS conferences level I centers, respectively. <h3>Patients</h3> Trauma patients were defined as those who met American College Surgeons physiology, injury, and/or mechanism...

10.1001/archsurg.143.8.776 article EN Archives of Surgery 2008-08-18

Background: Previous studies have suggested that prehospital spine immobilization provides minimal benefit to penetrating trauma patients but takes valuable time, potentially delaying definitive care. We hypothesized who are immobilized before transport higher mortality than nonimmobilized patients. Methods: performed a retrospective analysis of in the National Trauma Data Bank (version 6.2). Multiple logistic regression was used with as primary outcome measure. compared versus without...

10.1097/ta.0b013e3181c9ee58 article EN Journal of Trauma and Acute Care Surgery 2010-01-01

Prehospital intravenous (IV) fluid administration is common in trauma patients, although little evidence supports this practice. We hypothesized that patients who received prehospital IV fluids have higher mortality than did not receive the setting.We performed a retrospective cohort study of from National Trauma Data Bank. Multiple logistic regression was used with as primary outcome measure. compared versus without administration, using patient demographics, mechanism, physiologic and...

10.1097/sla.0b013e318207c24f article EN Annals of Surgery 2010-12-21

In Brief Background: While incidental masses in certain organs have received particular attention, periampullary and pancreatic incidentalomas (PIs) remain poorly characterized. Methods: We reviewed 1944 consecutive pancreaticoduodenectomies (PD) over an 8-year period (April 1997 to October 2005). A total of 118 patients (6% all PDs) presented with finding a or mass. The PI were analyzed compared the rest cohort (NI, nonincidentaloma group, n = 1826). Results: Thirty-one percent (n 37) had...

10.1097/01.sla.0000216763.27673.97 article EN Annals of Surgery 2006-04-20

Object There is limited information on the relationship between patient age and clinical benefit of resection in patients with glioblastoma. The purpose this study was to use a population-based database determine whether influences frequency that gross-total (GTR) performed, also GTR associated survival difference different groups. Methods authors identified 20,705 adult glioblastoma Surveillance, Epidemiology, End Results (SEER) registry (1998–2009). Surgical practice patterns were defined...

10.3171/2013.9.jns13877 article EN Journal of neurosurgery 2013-11-08

Background: Age at diagnosis is incorporated into all relevant staging systems for differentiated thyroid carcinoma (DTC). There growing evidence that a specific age cutoff may not be ideal accurate risk stratification. We sought to evaluate the interplay between and oncologic variables in patients with DTC using largest cohort date. Methods: The Surveillance, Epidemiology, End Results (SEER) database was queried identify as their only malignancy period 1973 2009. Multivariate analyses range...

10.1089/thy.2014.0116 article EN Thyroid 2014-11-04

Endovascular repair of abdominal aortic aneurysm (AAA) compared with open increases perioperative survival, but it is not known if long-term survival.To compare outcomes after vs endovascular AAA.Retrospective analysis patients 65 years or older in the Medicare Standard Analytic File, 2003-2007, who underwent isolated intact AAA. Cause death was determined from National Death Index.The primary outcome all-cause mortality. Secondary were AAA-related mortality, hospital length stay, 1-year...

10.1001/jama.2012.453 article EN JAMA 2012-04-17

The US Preventive Services Task Force (USPSTF) currently recommends initiating breast cancer screening at 50 years of age in patients average risk. 1 However, we hypothesize that these guidelines may not be sensitive to racial differences and inappropriately extrapolating data from largely white populations for use racially diverse populations.This process could result underscreening nonwhite female patients.These concerns are similar broader discussions regarding sex bias the clinical...

10.1001/jamasurg.2018.0035 article EN JAMA Surgery 2018-03-07
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