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Arnon D. Cohen

Bio: Arnon D. Cohen is an academic researcher from Clalit Health Services. The author has contributed to research in topics: Population & Odds ratio. The author has an hindex of 41, co-authored 374 publications receiving 7913 citations. Previous affiliations of Arnon D. Cohen include University of Milan & University of Connecticut.


Papers
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Journal ArticleDOI
TL;DR: Factors that determine non-attendance in adults visiting an ambulatory dermatology clinic are investigated in the southern district of Clalit Health Services, the largest organization of managed care in Israel.
Abstract: 377 Letters to the Editor Sir, Non-attendance (failure to attend clinic appointments) is a common problem in dermatology clinics. Non-attendance proportions range from 15% to 25% and lead to inefficient use of space and personnel and increased costs (1–7). To improve the management of dermatological clinics, factors that determine non-attendance should be identified and addressed. In the past, only a few studies were performed on non-attendance in general dermatology clinics. The factors that determine non-attendance in adult dermatology clinics include the payer type, inadequate communication between the hospital and patients, patients forgetting their appointment date or illness, and problems related to appointments (8–11). In paediatric dermatolo-gical patients, non-attendance was associated with male gender and referrals from emergency department as opposed to referrals from private physicians (12). In this study we investigated factors that determine non-attendance in adults visiting an ambulatory dermatology clinic. The study was conducted in the southern district of Clalit Health Services. Clalit Health Services is the largest organization of managed care in Israel. In the southern district of Israel, Clalit Health Services serves a population of 470,000 enrollees. The dermatology service in this district includes 17 active dermatologists , working in 23 clinics, accounting for approximately 110,000 patient–physician encounters annually. The central ambulatory clinic resides in the district town Beer-Sheva. Visits to district central ambulatory clinic were obtained from a computer-generated listing of scheduled appointments from January 1 to December 31, 2003. The list contained the patient's age, gender, visit date and time, waiting time for an appointment and the treating dermatologist for all new appointments in the clinic. In this clinic, patients were not required to pre-authorize the appointment and did not receive a reminder of the scheduled appointment. Statistical analysis Results of continuous variables are shown as means. Results of categorical variables are described as frequencies. Chi-square tests were used to analyse statistically significant differences of categorical variables. Logistic regression was used for multivariate analyses. p-values ≤ 0.05 were considered statistically significant. reSUlTS A total of 7580 visits were included in the study during a 12-month period. There were 4509 female (59.5%) and 3071 male (40.5%) patients. The mean age was 45.9 years (range 18–100 years). The overall proportion of non-attendance at the dermatology clinic was 26.1%. Non-attendance was 27.2% in female and 24.5% in male patients (p = 0.009). Non-attendance was 30.1% in patients below 50 years, 21.4% in patients in the age range …

12 citations

Journal ArticleDOI
TL;DR: In this article, the authors assessed the prevalence of COVID-19 vaccination by individuals with ASD, and age and sex-matched controls (total n = 11,080) in Israel by February 2021, approximately a month and a half after the national vaccination distribution plan was launched.

12 citations

Journal ArticleDOI
31 Jan 2020-PLOS ONE
TL;DR: Different HCS utilization patterns among women who reported experiencing versus not experiencing IPV in different ethnic groups suggest complex relationships that hinge on how HCS address women’s needs, starting with IPV screening and providing information.
Abstract: Background While women experiencing intimate partner violence (IPV) face significant health consequences, their patterns of healthcare services (HCS) utilization are unclear, as are the effects of IPV screening and receiving information on these patterns. Objectives 1. Compare utilization patterns of five HCS (visits to family physician, gynecologist, specialist and emergency room, and hospitalization) in a cohort of perinatal women who reported experiencing versus not experiencing any IPV and IPV types (physical and/or sexual; emotional and/or verbal; social and economic); 2. Examine whether IPV screening, receiving information on support services, or both, affect patterns; and 3. Compare these associations between ethnic groups (Arab and Jewish women). Methods We conducted a prospective study using registry data on HCS utilization obtained from Israel’s largest Health Fund (Clalit) in the year following a 2014–2015 survey of a cohort of 868 perinatal women in Israel (327 Arab minority, 542 Jewish) on their reports of experiencing IPV, IPV screening, and receiving information. Using multivariate analysis, we calculated adjusted odds ratios (AOR) and 95% confidence intervals (CI) for the five HCS utilizations in association with reports of any IPV and IPV types. We adjusted for IPV screening, receiving information about services, and both, in the total sample, and separately among ethnic groups. Results Any IPV and IPV types had significant associations with some HCS utilization variables, with different directions and patterns for the ethnic groups. Experiencing IPV was associated with higher HCS utilization among Arab women, lower utilization in Jewish women. Arab women experiencing IPV were twice as likely to visit a gynecologist than women not experiencing IPV (AOR (95% CI) was 2.00, 1.14–3.51 for any IPV; 2.17, 1.23–3.81 for emotional and/or verbal IPV, and 1.83, 1.04–3.22, for social and economic IPV). Among Jewish women, experiencing any IPV was associated with lower likelihood of emergency-room visits (0.62, 0.41–0.93); and experiencing physical and/or sexual IPV was associated with lower likelihood of family physician visits (OR = 0.20, 0.05–0.82). Both IPV screening and receiving information were associated with lower HCS utilization among Arab women only. Conclusions Different HCS utilization patterns among women who reported experiencing versus not experiencing IPV in different ethnic groups suggest complex relationships that hinge on how HCS address women’s needs, starting with IPV screening and providing information. This might inform tailored programs to tackle IPV at the HCS, particularly for minority women.

12 citations

Journal ArticleDOI
TL;DR: The level of evidence supporting use of the modalities beyond third-line treatments is rather weak and based on anecdotal reports or small case series, but patients with high use of CU-related medications during 2013 were considered patients with persistent disease.

11 citations


Cited by
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Journal ArticleDOI
TL;DR: The 11th edition of Harrison's Principles of Internal Medicine welcomes Anthony Fauci to its editorial staff, in addition to more than 85 new contributors.
Abstract: The 11th edition of Harrison's Principles of Internal Medicine welcomes Anthony Fauci to its editorial staff, in addition to more than 85 new contributors. While the organization of the book is similar to previous editions, major emphasis has been placed on disorders that affect multiple organ systems. Important advances in genetics, immunology, and oncology are emphasized. Many chapters of the book have been rewritten and describe major advances in internal medicine. Subjects that received only a paragraph or two of attention in previous editions are now covered in entire chapters. Among the chapters that have been extensively revised are the chapters on infections in the compromised host, on skin rashes in infections, on many of the viral infections, including cytomegalovirus and Epstein-Barr virus, on sexually transmitted diseases, on diabetes mellitus, on disorders of bone and mineral metabolism, and on lymphadenopathy and splenomegaly. The major revisions in these chapters and many

6,968 citations

01 Jan 1990
TL;DR: An overview of the self-organizing map algorithm, on which the papers in this issue are based, is presented in this article, where the authors present an overview of their work.
Abstract: An overview of the self-organizing map algorithm, on which the papers in this issue are based, is presented in this article.

2,933 citations

Journal ArticleDOI
TL;DR: The theory proposed here provides a taxonomy for numerical linear algebra algorithms that provide a top level mathematical view of previously unrelated algorithms and developers of new algorithms and perturbation theories will benefit from the theory.
Abstract: In this paper we develop new Newton and conjugate gradient algorithms on the Grassmann and Stiefel manifolds. These manifolds represent the constraints that arise in such areas as the symmetric eigenvalue problem, nonlinear eigenvalue problems, electronic structures computations, and signal processing. In addition to the new algorithms, we show how the geometrical framework gives penetrating new insights allowing us to create, understand, and compare algorithms. The theory proposed here provides a taxonomy for numerical linear algebra algorithms that provide a top level mathematical view of previously unrelated algorithms. It is our hope that developers of new algorithms and perturbation theories will benefit from the theory, methods, and examples in this paper.

2,686 citations

DOI
05 Nov 2009
TL;DR: 结节病易误诊,据王洪武等~([1])收集国内18篇关于此第一印象中拟诊 结核5例,为此应引起临床对本 病诊
Abstract: 结节病易误诊,据王洪武等~([1])收集国内18篇关于此病误诊的文献,误诊率高达63.2%,当然有误诊就会有误治,如孙永昌等~([2])报道26例结节病在影像学检查诊断的第一印象中拟诊结核5例,其中就有2例完成规范的抗结核治疗,为此应引起临床对本病诊治的重视。

1,821 citations

Journal ArticleDOI
23 Jul 2015
TL;DR: The greatest need is for agents that enhance insulin sensitivity, halt the progressive pancreatic β-cell failure that is characteristic of T2DM and prevent or reverse the microvascular complications.
Abstract: Type 2 diabetes mellitus (T2DM) is an expanding global health problem, closely linked to the epidemic of obesity. Individuals with T2DM are at high risk for both microvascular complications (including retinopathy, nephropathy and neuropathy) and macrovascular complications (such as cardiovascular comorbidities), owing to hyperglycaemia and individual components of the insulin resistance (metabolic) syndrome. Environmental factors (for example, obesity, an unhealthy diet and physical inactivity) and genetic factors contribute to the multiple pathophysiological disturbances that are responsible for impaired glucose homeostasis in T2DM. Insulin resistance and impaired insulin secretion remain the core defects in T2DM, but at least six other pathophysiological abnormalities contribute to the dysregulation of glucose metabolism. The multiple pathogenetic disturbances present in T2DM dictate that multiple antidiabetic agents, used in combination, will be required to maintain normoglycaemia. The treatment must not only be effective and safe but also improve the quality of life. Several novel medications are in development, but the greatest need is for agents that enhance insulin sensitivity, halt the progressive pancreatic β-cell failure that is characteristic of T2DM and prevent or reverse the microvascular complications. For an illustrated summary of this Primer, visit: http://go.nature.com/V2eGfN.

1,757 citations