Abstract:
STUDY OBJECTIVE:We evaluate the ability of 4 sampling methods to generate representative samples of the emergency department (ED) population. METHODS:We analyzed the electronic records of 21,662 consecutive patient visits at an urban, academic ED. From this population, we simulated different models of study recruitment in the ED by using 2 sample sizes (n=200 and n=400) and 4 sampling methods: true random, random 4-hour time blocks by exact sample size, random 4-hour time blocks by a predetermined number of blocks, and convenience or "business hours." For each method and sample size, we obtained 1,000 samples from the population. Using χ(2) tests, we measured the number of statistically significant differences between the sample and the population for 8 variables (age, sex, race/ethnicity, language, triage acuity, arrival mode, disposition, and payer source). Then, for each variable, method, and sample size, we compared the proportion of the 1,000 samples that differed from the overall ED population to the expected proportion (5%). RESULTS:Only the true random samples represented the population with respect to sex, race/ethnicity, triage acuity, mode of arrival, language, and payer source in at least 95% of the samples. Patient samples obtained using random 4-hour time blocks and business hours sampling systematically differed from the overall ED patient population for several important demographic and clinical variables. However, the magnitude of these differences was not large. CONCLUSION:Common sampling strategies selected for ED-based studies may affect parameter estimates for several representative population variables. However, the potential for bias for these variables appears small.
journal_name
Ann Emerg Medjournal_title
Annals of emergency medicineauthors
Valley MA,Heard KJ,Ginde AA,Lezotte DC,Lowenstein SRdoi
10.1016/j.annemergmed.2012.01.016subject
Has Abstractpub_date
2012-08-01 00:00:00pages
139-45.e1issue
2eissn
0196-0644issn
1097-6760pii
S0196-0644(12)00050-9journal_volume
60pub_type
杂志文章abstract::The situational crisis is a period of acute disorganization of affective cognitive and behavioral function precipitated by a traumatic life experience. We review the clinical features of a situational crisis and the four phases of the crisis sequence. Special emphasis is placed on the practical principles of treatment...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(83)80513-7
更新日期:1983-05-01 00:00:00
abstract::The development of an organized filing system for referencing articles pertinent to emergency medicine is presented. This simple and flexible system allows for modification for the individual needs of the emergency physician. ...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(80)80306-4
更新日期:1980-09-01 00:00:00
abstract::Since September 11, 2001, concern about potential terrorist attacks has increased in the United States. To reduce morbidity and mortality from outbreaks of illness from the intentional release of chemical agents, we examine data from the Toxic Exposure Surveillance System (TESS). TESS, a national system for timely col...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/j.annemergmed.2005.09.016
更新日期:2006-02-01 00:00:00
abstract::Recent animal and clinical data require a reevaluation of the traditional approach to the patient exposed to carbon monoxide. Unfortunately, these new data are inconclusive and generate controversies regarding the indications and value of neuropsychologic testing, cause of carbon monoxide toxicity, and indications (if...
journal_title:Annals of emergency medicine
pub_type: 杂志文章,评审
doi:10.1016/s0196-0644(94)70136-9
更新日期:1994-08-01 00:00:00
abstract::In more than 15 years of paramedic operation, fewer than 15 prehospital studies have been undertaken on the pharmacologic intervention by paramedics. Many of these studies suffer from inadequate sample size or deficient study design. There is no evidence that any medication given by the prehospital care provider is be...
journal_title:Annals of emergency medicine
pub_type: 杂志文章,评审
doi:10.1016/s0196-0644(89)80113-1
更新日期:1989-02-01 00:00:00
abstract::Verapamil is considered by many investigators to be the drug of choice for the acute management of uncomplicated PSVT. Several clinical investigators have demonstrated termination of PSVT in more than 90% of their patients within minutes following IV drug administration. The incidence of reported severe adverse reacti...
journal_title:Annals of emergency medicine
pub_type: 杂志文章,评审
doi:10.1016/s0196-0644(81)80013-3
更新日期:1981-10-01 00:00:00
abstract:STUDY OBJECTIVE:The use of the International Classification of Diseases system to describe emergency department (ED) case mix has disadvantages. We therefore developed computer algorithms that recognize a combination of words, word fragments, and word patterns to link free-text complaint fields to 20 reason-for-visit c...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(03)00748-0
更新日期:2004-03-01 00:00:00
abstract:STUDY OBJECTIVE:To determine the efficacy of emergency practitioner-performed brief intervention for hazardous/harmful drinkers in reducing alcohol consumption and negative consequences in an emergency department (ED) setting. METHODS:A randomized clinical trial (Project ED Health) was conducted in an urban ED from Ma...
journal_title:Annals of emergency medicine
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.annemergmed.2007.11.028
更新日期:2008-06-01 00:00:00
abstract::Electrolytes, BUN, and creatinine are some of the most frequently ordered laboratory tests. The use of these tests in emergency practice has not been studied critically, and few investigations of their use in other disciplines have been performed. A review of the available literature and an analysis of medical problem...
journal_title:Annals of emergency medicine
pub_type: 杂志文章,评审
doi:10.1016/s0196-0644(86)80586-8
更新日期:1986-03-01 00:00:00
abstract:STUDY OBJECTIVE:We seek to describe the medical history and clinical findings of patients attending the emergency department (ED) with suspected coronavirus disease 2019 (COVID-19) and estimate the diagnostic accuracy of patients' characteristics for predicting COVID-19. METHODS:We prospectively enrolled all patients ...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/j.annemergmed.2020.05.022
更新日期:2020-10-01 00:00:00
abstract::Activated charcoal is a safe, effective, inexpensive adjunct in the management of most toxic ingestions. It has the ability to adsorb a wide variety of drugs and chemicals, one of which is acetaminophen. N-acetylcysteine (NAC) is the specific antidote available for serious overdoses of acetaminophen. Current managemen...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(85)80781-2
更新日期:1985-06-01 00:00:00
abstract::Thrombolytic therapy offers the promise of major therapeutic intervention in many areas as well as in the treatment of patients with acute myocardial infarction who present to the emergency department. Infusion of tissue-type plasminogen activator (tPA) during field transport has been proven safe, but optimal methods ...
journal_title:Annals of emergency medicine
pub_type: 杂志文章,评审
doi:10.1016/s0196-0644(89)80271-9
更新日期:1989-12-01 00:00:00
abstract::Decisions about medical resource triage during disasters require a planned structured approach, with foundational elements of goals, ethical principles, concepts of operations for reactive and proactive triage, and decision tools understood by the physicians and staff before an incident. Though emergency physicians ar...
journal_title:Annals of emergency medicine
pub_type: 杂志文章,评审
doi:10.1016/j.annemergmed.2011.06.012
更新日期:2012-03-01 00:00:00
abstract::Reported is a case of a 34-year-old man, previously in good health, who underwent chiropractic manipulation of the cervical spine for treatment of a recent whiplash injury. Immediately following manipulation, the patient became unresponsive and was found to have sustained a brain stem infarction resulting in the "Lock...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(83)80217-0
更新日期:1983-10-01 00:00:00
abstract:STUDY OBJECTIVE:Measurement of interval data is important in the accurate recording of events that occur in an emergency medical services system. Measurement of intervals should be a simple task. However, when two separate clocks are needed to record the beginning and end of an interval, accurate measurement may be dif...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(97)70222-1
更新日期:1997-04-01 00:00:00
abstract:STUDY OBJECTIVE:To compare the effectiveness and incidence of adverse reactions with three treatment regimens for asthma in adults in the prehospital setting. DESIGN:Prospective, randomized clinical study. SETTING:Inner-city emergency medical service system providing basic and advanced life support and transport to 1...
journal_title:Annals of emergency medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0196-0644(95)70116-8
更新日期:1995-10-01 00:00:00
abstract:STUDY OBJECTIVE:Peripheral intravenous catheters are the most common invasive device in health care yet have very high failure rates. We investigate whether the failure rate could be reduced by the addition of skin glue to standard peripheral intravenous catheter care. METHODS:We conducted a single-site, 2-arm, nonbli...
journal_title:Annals of emergency medicine
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.annemergmed.2015.11.026
更新日期:2016-08-01 00:00:00
abstract:STUDY OBJECTIVE:To determine antibody titers to hepatitis B surface antigen (anti-HBsAg) among previously vaccinated emergency physicians and to assess the degree of compliance with Centers for Disease Control and Prevention (CDC) postvaccination guidelines. METHODS:A descriptive analysis was performed of anti-HBsAg t...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(99)70388-4
更新日期:1999-02-01 00:00:00
abstract:STUDY OBJECTIVES:The syndrome of rhabdomyolysis associated with cocaine use has been recently described, but the incidence, severity, risk factors, and complications are unknown. This study sought to describe the spectrum of the syndrome and identify clinical features of patients at risk. DESIGN:Retrospective case ser...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(05)81518-5
更新日期:1990-10-01 00:00:00
abstract:STUDY OBJECTIVE:We examine how dedicated methodology and statistical review affects the quality of manuscripts published in Annals of Emergency Medicine. DESIGN:The dedicated reviewers developed a manuscript scoring form based on previously used instruments. The form contained 84 unique elements. Eight items sought th...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1067/mem.2002.127328
更新日期:2002-09-01 00:00:00
abstract:STUDY OBJECTIVE:Methicillin-resistant Staphylococcus aureus (MRSA) transmission dynamics in the emergency department (ED) are not well defined; environmental surfaces may serve as reservoirs for transmission. This study investigates the effect of patients with a history of MRSA colonization or infection on subsequent M...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/j.annemergmed.2018.12.014
更新日期:2019-07-01 00:00:00
abstract:STUDY OBJECTIVE:To determine the feasibility of managing patients with acute pyelonephritis as outpatients after initial treatment with IV antibiotics in an emergency department observation unit. DESIGN:Prospective and uncontrolled. SETTING:ED observation unit. TYPE OF PARTICIPANTS:Nonpregnant female patients 14 yea...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(05)80935-7
更新日期:1991-03-01 00:00:00
abstract::Nontraumatic gas gangrene is extremely rare. It usually occurs following ulceration or perforation of an abdominal or pelvic viscus in persons having impaired host immune defenses. A fatal case of nontraumatic Clostridium septicum septicemia and myonecrosis in an elderly diabetic man with a perforated colon carcinoma ...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(81)80121-7
更新日期:1981-06-01 00:00:00
abstract:STUDY OBJECTIVE:Reporting systems are designed to identify patient care issues so changes can be made to improve safety. However, a culture of blame discourages event reporting, and reporting seen as punitive can inhibit individual and system performance in patient safety. This study aimed to determine the frequency an...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/j.annemergmed.2020.06.048
更新日期:2020-08-14 00:00:00
abstract::There are many infectious causes of fatigue, sore throat, and fever, including mononucleosis and toxoplasmosis. Toxoplasma antibody testing is rarely performed in most emergency departments; as a result, toxoplasmosis is diagnosed infrequently. We obtained Toxoplasma IgG IFA titers on ED patients who had mononucleosis...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(89)80575-x
更新日期:1989-04-01 00:00:00
abstract:OBJECTIVE:Controversy surrounds the linkage of prevention counseling with emergency department (ED)-based HIV testing. Further, the effectiveness and feasibility of prevention counseling in the ED setting is unknown. We investigate these issues by conducting a preliminarily exploration of several related aspects of our...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/j.annemergmed.2011.03.036
更新日期:2011-07-01 00:00:00
abstract:STUDY OBJECTIVE:To determine the usefulness of the alveolar-arterial oxygen gradient for detecting pulmonary embolism in elderly patients presenting to the emergency department. DESIGN:Retrospective cohort analysis. SETTING:Two university-affiliated community hospitals. TYPE OF PARTICIPANTS:Consecutive patients more...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(05)80985-0
更新日期:1993-07-01 00:00:00
abstract::Hemodynamically unstable patients will benefit from therapy to control their blood pressure only if this pressure can be determined with accuracy. We compared the accuracy of arterial blood pressure measurements taken aboard helicopters by palpation with a Doppler device and with an oscillometric device. Twenty critic...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(88)80401-3
更新日期:1988-06-01 00:00:00
abstract:STUDY OBJECTIVE:To determine the relative importance of variables correlated with patient satisfaction with emergency department care and service. DESIGN:Retrospective telephone survey targeting all patients who visited the Panorama City Kaiser Permanente ED from April 4 to April 17, 1991. Patients were contacted with...
journal_title:Annals of emergency medicine
pub_type: 杂志文章
doi:10.1016/s0196-0644(05)81947-x
更新日期:1993-03-01 00:00:00
abstract::The use of flumazenil, a benzodiazepine antagonist, was studied in two patients with coma of unknown etiology. One patient ingested 20.5 mg alprazolam before crashing his truck into parked automobiles. The patient was awakened by flumazenil administration, and the severity of his injuries was evaluated reliably. A sec...
journal_title:Annals of emergency medicine
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/s0196-0644(05)82054-2
更新日期:1990-03-01 00:00:00