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Dive into the research topics where Eunice Chang is active.

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Featured researches published by Eunice Chang.


Obstetrics & Gynecology | 2009

Ovarian Conservation at the Time of Hysterectomy and Long-Term Health Outcomes in the Nurses' Health Study

William H. Parker; Michael S. Broder; Eunice Chang; Diane Feskanich; Cindy Farquhar; Zhimae Liu; Donna Shoupe; Jonathan S. Berek; Susan E. Hankinson; JoAnn E. Manson

OBJECTIVE: To report long-term health outcomes and mortality after oophorectomy or ovarian conservation. METHODS: We conducted a prospective, observational study of 29,380 women participants of the Nurses’ Health Study who had a hysterectomy for benign disease; 16,345 (55.6%) had hysterectomy with bilateral oophorectomy, and 13,035 (44.4%) had hysterectomy with ovarian conservation. We evaluated incident events or death due to coronary heart disease (CHD), stroke, breast cancer, ovarian cancer, lung cancer, colorectal cancer, total cancers, hip fracture, pulmonary embolus, and death from all causes. RESULTS: Over 24 years of follow-up, for women with hysterectomy and bilateral oophorectomy compared with ovarian conservation, the multivariable hazard ratios (HRs) were 1.12 (95% confidence interval [CI] 1.03–1.21) for total mortality, 1.17 (95% CI 1.02–1.35) for fatal plus nonfatal CHD, and 1.14 (95% CI 0.98–1.33) for stroke. Although the risks of breast (HR 0.75, 95% CI 0.68–0.84), ovarian (HR 0.04, 95% CI 0.01–0.09, number needed to treat=220), and total cancers (HR 0.90, 95% CI 0.84–0.96) decreased after oophorectomy, lung cancer incidence (HR=1.26, 95% CI 1.02–1.56, number needed to harm=190), and total cancer mortality (HR=1.17, 95% CI 1.04–1.32) increased. For those never having used estrogen therapy, bilateral oophorectomy before age 50 years was associated with an increased risk of all-cause mortality, CHD, and stroke. With an approximate 35-year life span after surgery, one additional death would be expected for every nine oophorectomies performed. CONCLUSION: Compared with ovarian conservation, bilateral oophorectomy at the time of hysterectomy for benign disease is associated with a decreased risk of breast and ovarian cancer but an increased risk of all-cause mortality, fatal and nonfatal coronary heart disease, and lung cancer. In no analysis or age group was oophorectomy associated with increased survival. LEVEL OF EVIDENCE: II


Annals of Surgery | 2008

Clinical Outcomes and Resource Utilization Associated With Laparoscopic and Open Colectomy Using a Large National Database

Conor P. Delaney; Eunice Chang; Anthony J. Senagore; Michael Broder

Objectives:To clarify national clinical and economic laparoscopic colectomy outcomes, we conducted a study of patients who underwent colectomy by laparoscopic or open approaches. Background:Laparoscopy is becoming the preferred approach for colectomy in benign and malignant diseases. Although it is associated with significant clinical benefits, economic outcomes have varied. Methods:We analyzed cohorts of patient-level data from Premier Inc.s Perspective Rx Comparative Database, which collects data from more than 500 hospitals throughout the United States. By reviewing hospital charge data, patients who underwent elective colectomies from July 1, 2004, through June 30, 2006, were identified using International Classification of Diseases, 9th Revision, Clinical Modification procedure codes. The colectomy had to be listed as the primary or secondary procedure of the hospitalization. Primary outcomes included transfusion rates, in-hospital complications, readmissions within 30 days, reoperations, length of stay, total hospitalization costs, and discharge dispositions and services. Results:We identified 32,733 patients who had elective colectomies throughout 402 hospitals; 11,044 (33.7%) were laparoscopic and 21,689 (66.3%) were open colectomies. The mean age was 64.2 ± 13.9 years and 53.8% were women. Laparoscopic colectomy patients had a longer mean operative time (195 ± 76 vs. 178 ± 80 minutes; P < 0.0001) and higher total hospital costs (


Current Medical Research and Opinion | 2007

An evaluation of patient preference for an alternative insulin delivery system compared to standard vial and syringe.

Karen Stockl; Caron Ory; Ann Vanderplas; Lars Nicklasson; William Lyness; D Cobden; Eunice Chang

8076 vs.


Annals of Allergy Asthma & Immunology | 2012

Cost, utilization, and patterns of medication use associated with chronic idiopathic urticaria

James L. Zazzali; M. Broder; Eunice Chang; Melvin W. Chiu; Daniel J. Hogan

7678; P = 0.0002). Laparoscopic patients had shorter mean length of stay (7.0 vs. 8.1; P < 0.0001) and fewer mean intensive care unit days (0.7 ± 3.8 vs. 1.3 ± 5.2 days; P < 0.0001). The laparoscopic cohort also had lower rates of transfusions (odds ratio [OR] = 0.68; P < 0.0001), in-hospital complications (OR = 0.89; P < 0.0001), and readmissions within 30 days (OR = 0.89; P = 0.0051), although reoperation rates were slightly, but significantly increased (OR = 1.78; P = 0.002). Laparoscopic colectomy patients were more likely to be discharged home without nursing care (OR = 0.70; P < 0.0001). Conclusion:Evaluation of a national administrative data set showed that patients who underwent laparoscopic colectomy had shorter intensive care unit and total hospital stays, fewer complications, lower mortality, fewer readmissions, and less use of skilled nursing facilities after discharge. There was a small but significant increase in reoperation rates and in-hospital costs with laparoscopic colectomy. Improved application of enhanced recovery programs and operative efficiencies may further improve resource utilization associated with laparoscopic colectomy.


Disease Management & Health Outcomes | 2003

Economic Impact of Patient Adherence with Antidepressant Therapy Within a Managed Care Organization

T. Jeffrey White; Ann Vanderplas; Caron Ory; Christopher M. Dezii; Eunice Chang

ABSTRACT Background: Diabetes mellitus (DM) affects over 18.2 million Americans and diabetes-related medical costs exceed 132 billion dollars per year, totaling more than 12% of the United States healthcare budget. The Diabetes Control and Complications Clinical Trial demonstrated that intensive insulin therapy and the control of plasma glucose can significantly reduce the incidence of late diabetic complications and delay the progression of existing conditions in type 1 diabetes. Optimal glycemic control often requires intensive insulin therapy to maintain a hemoglobin A1C (A1C) of less than 7% as recommended by the American Diabetes Association. It is estimated that more than half of the approximately 7 million Americans using insulin do so with suboptimal treatment and while administering one or two insulin injections per day. Non-adherence may be a contributing factor in suboptimal treatment. For a variety of reasons, many patients diagnosed with diabetes and treated with insulin are non-adherent. Scope: The primary objective of this study was to evaluate preference for an insulin delivery system comparing a disposable doser (InnoLet) to the standard vial/syringe. In a prospective, randomized, open-label, two-period, crossover study, 260 patients were enrolled (age ≥ 18 years, with type 1 or 2 diabetes, and receiving NPH or regular or 70/30 insulin for at least 6-months). A total of 162 patients completed both treatment arms. Excluded were those unable to read/write English or administer their own injections, pregnant/lactating women, those using antipsychotics, and those with a history of alcohol abuse or cognitive impairment. Patients completed the eight-item Diabetes Fear of Self-Injection Questionnaire at baseline, week 12 and week 24. Items were rated on a 4-point Likert scale (1 = almost never; 4 = almost always) with a maximum fear score of 32. At week 24, patients completed a preference survey. Findings: Of the 162 patients completing both treatment arms, 89 (55.0%) were in the vial/syringe to disposable doser treatment arm, 50% were female and mean age was 60 ± 11 years. Patients in both treatment arms displayed little significant differences in baseline characteristics. Patients reported significantly lower fear of self-injection after using the disposable doser compared to vial/syringe (mean ± SEM: 9.5 ± 0.2 vs. 11.2 ± 0.4; p < 0.0001). Most patients (71.5%) indicated a preference for the disposable doser compared to the vial/syringe method ( p < 0.0001). Conclusion: The majority of patients preferred the disposable doser, and reported significantly less fear of self-injection using this delivery system. There are some potential limitations to consider. A randomization bias may have been present, patients who enrolled in this study were those who were actively seeking medical treatment for diabetes, insulin pens and cartridges are not available for all types of insulin regimens, pre-filled pens and cartridges may not be altered and, in general, alternative insulin delivery systems tend to be more costly than insulin sold in traditional vials. However, insulin may have greater patient acceptance and less psychological distress when administered via an alternative delivery system.


Journal of Medical Economics | 2013

Adherence to dornase alfa treatment among commercially insured patients with cystic fibrosis

Samya Z. Nasr; Will Chou; Kathleen F. Villa; Eunice Chang; Michael S. Broder

BACKGROUND The literature on chronic idiopathic urticaria (CIU) lacks large-scale population-based studies. OBJECTIVE To characterize an insured population with CIU, including their demographic characteristics and comorbidities. METHODS We conducted a cross-sectional analysis using insurance claims. We included patients with 1 outpatient claim with an International Classification of Diseases, 9(th)Edition, Clinical Modification (ICD-9-CM) code for idiopathic, other specified, or unspecified urticaria (ICD-9-CM 708.1, 708.8, or 708.9) and either (1) another of these claims 6 or more weeks later; (2) a claim for angioedema (ICD-9-CM 995.1) 6 or more weeks from the urticaria diagnosis; or (3) overlapping claims for 2 prescription medications commonly used for CIU. RESULTS We identified 6,019 patients who had claims consistent with CIU. The mean age was 36 years. Fifty-six percent of patients had primary care physicians as their usual source of care, 14% had allergists, and 5% had dermatologists. Allergic rhinitis was diagnosed in 48%, asthma in 21%, other allergy in 19%, and atopic dermatitis in 8%. Sixty-seven percent of patients used prescription antihistamines, 54% used oral corticosteroids (OCSs), 24% used montelukast, and 9% used oral doxepin. Antihistamine users received a mean of 152 days of prescription antihistamines, OCS users 30 days of OCSs, montelukast users 190 days of montelukast, and oral doxepin users 94 days of doxepin. CONCLUSIONS Primary care physicians managed most patients with CIU. Antihistamines were the most common treatment for CIU, although OCSs were frequently prescribed. Thirty days of OCS supply among users may represent multiple steroid bursts each year. Given the known risks of OCSs, identifying other CIU treatments with more favorable safety profiles may be beneficial.


Disease Management & Health Outcomes | 2004

The Costs of Non-Adherence to Oral Antihyperglycemic Medication in Individuals with Diabetes Mellitus and Concomitant Diabetes Mellitus and Cardiovascular Disease in a Managed Care Environment

T. Jeffrey White; Ann Vanderplas; Eunice Chang; Christopher M. Dezii; Geoffrey D. Abrams

ObjectiveTo evaluate the relationship between adherence to antidepressant therapy and economic outcomes.DesignRetrospective database analysis using pharmacy and medical claims from a pharmacy benefit and medical management company serving a large managed care organization (MCO) that provides healthcare coverage for approximately 3.5 million members.ParticipantsPatient selection was based on the following criteria: (i) newly started on antidepressant therapy between 1 April 1999 through 30 June 1999; (ii) titrated to ausual antidepressant dosage level within 6 months of the initiation of therapy; (iii) continuously enrolled in the health plan between 1 January 1999 through 31 December 1999; and (iv) >18 years of age.Outcome measuresAntidepressant adherence was calculated as a ratio of the total number of day’s supply during the 180-day follow-up period divided by 180 days. Patients were defined as adhering to treatment if they had a ratio of ≥0.70. The means of pharmacy ingredient costs, medical charges and total healthcare charges incurred during the follow-up period were compared. Adjusted means (least squares means) were calculated after adjusting for potential confounding factors that may have influenced relevant outcomes.ResultsOf the total cohort (14 190 patients), 39.7% (n = 5638) of patients were deemed to be adhering (≥70.0% completion) to their treatment. Adherent patients were significantly more advanced in age (55.2 vs 54.3 years, p < 0.01) and had a higher mean Chronic Disease Score (3.80 vs 3.47, p < 0.0001). After adjusting for confounding factors, adherent patients incurred lower total healthcare charges (


Allergy and Asthma Proceedings | 2015

Risk of corticosteroid-related adverse events in asthma patients with high oral corticosteroid use.

James L. Zazzali; Michael S. Broder; Theodore A. Omachi; Eunice Chang; Gordon H. Sun; Karina Raimundo

US11 327 vs


Current Medical Research and Opinion | 2009

Cost and utilization of COPD and asthma among insured adults in the US

Christopher M. Blanchette; Michael S. Broder; Caron Ory; Eunice Chang; Manabu Akazawa; Anand A. Dalal

US11 815, p = 0.433) significantly lower medical charges (


Seminars in Arthritis and Rheumatism | 2016

Corticosteroid-related adverse events in patients with giant cell arteritis: A claims-based analysis ☆☆

Michael S. Broder; Khaled Sarsour; Eunice Chang; Neil Collinson; Katie Tuckwell; Pavel Napalkov; Micki Klearman

US9411 vs

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