Association of Cannabis Use and At-Risk Alcohol Use With Intimate Partner Violence in an Urban ED Sample.

INTRODUCTION: Urban ED patients have elevated rates of substance use and intimate partner violence. The purpose of this study is to describe the risk profiles for intimate partner violence among urban ED patients who report at-risk alcohol use only, cannabis use only, or both types of substance use. METHODS: Cross-sectional survey data were collected from study participants (N = 1037; 53% female; ages 18-50) following informed consent. We measured participants' past-year at-risk drinking (women/men who had 4+/5+ drinks in a day), cannabis use, psychosocial and demographic characteristics, and past-year physical intimate partner violence (assessed with the Revised Conflict Tactics Scale). We used bivariate analysis to assess whether rates of intimate partner violence perpetration and victimization differed by type of substance use behavior. Multivariate logistic regression models were estimated for each intimate partner violence outcome. All analyses were stratified by gender. RESULTS: Rates of intimate partner violence differed significantly by type of substance use behavior and were highest among those who reported both at-risk drinking and cannabis use. Multivariate analysis showed that women who reported at-risk drinking only, cannabis use only, or both types of substance use had increased odds for intimate partner violence perpetration and victimization compared with women who reported neither type of substance use. Men's at-risk drinking and cannabis use were not associated with elevated odds of intimate partner violence perpetration or victimization. DISCUSSION: Brief screening of patients' at-risk drinking and cannabis use behaviors may help identify those at greater risk for intimate partner violence and those in need of referral to treatment.

Adverse childhood experiences are associated with at-risk drinking, cannabis and illicit drug use in females but not males: an Emergency Department study.

BACKGROUND: Adverse childhood experiences (ACEs) are associated with adult substance use in the general population. Given pervasive health disparities among underserved populations, understanding how ACEs are associated with substance use among urban Emergency Department (ED) patients could help inform design of effective screening, brief interventions, and referral to treatment. OBJECTIVES: To estimate gender differences in prevalence of separate and cumulative ACEs among a sample of urban ED patients, and assess its association with at-risk drinking (4+/5+ drinks for females/males), cannabis, and illicit drug use. We hypothesized that the association between ACEs and each outcome would be stronger among females than males. METHODS: Cross-sectional survey data were obtained from 1,037 married/partnered ED patients (53% female) at a public safety-net hospital. Gender-stratified logistic regression models were estimated for each substance use outcome. RESULTS: One+ ACEs were reported by 53% of males and 60% of females. Females whose mother was a victim of domestic violence had greater odds of at-risk drinking compared to females who did not report this ACE (AOR = 1.72; 95% CI 1.03, 2.88). Females' cumulative ACEs were associated with cannabis use (OR = 2.26, 95% CI 1.06, 4.83) and illicit drug use (OR = 3.35; 95% CI 1.21, 9.30). Males' separate and cumulative ACEs were not associated with increased likelihood for any of the outcomes. CONCLUSION: ACEs are associated with greater odds of substance use among female than male ED patients. The prevalence of ACE exposure in this urban ED sample underscores the importance of ED staff providing trauma-informed care.

D10 in the Treatment of Prehospital Hypoglycemia: A 24 Month Observational Cohort Study.

INTRODUCTION: Prehospital first responders historically have used an IV bolus of 50 mL of 50% dextrose solution (D50) for the treatment of hypoglycemia in the field. A local Emergency Medical Services (EMS) system recently approved a hypoglycemia treatment protocol of IV 10% dextrose solution (D10) due to occasional shortages and higher cost of D50. We use the experience of this EMS system to report the feasibility, safety, and efficacy of this approach. METHODS: Over the course of 104 weeks, paramedics treated 1,323 hypoglycemic patients with D10 and recorded patient demographics and clinical outcomes. Of these, 1,157 (87.5%) patients were treated with 100 mL of D10 initially upon EMS arrival, and full data on response to treatment was available on 871 (75%) of these 1,157. We captured the 871 patients' capillary glucose response to initial infusion of 100 mL of D10 and fit a linear regression line between elapsed time and difference between initial and repeat glucose values. We also explored the need for repeat glucose infusions as well as feasibility, and safety. RESULTS: The study cohort included 469 men and 402 women with a median age of 66. The median initial field blood glucose was 37 mg/dL, while the subsequent blood glucose had a median of 91 mg/dL. The median time to second glucose testing was eight minutes after beginning the 100mL D10 infusion. Of 871 patients, 200 (23.0%) required an additional dose of IV D10 solution due to persistent or recurrent hypoglycemia and seven (0.8%) patients required a third dose. There were no reported deaths or other adverse events related to D10 administration for hypoglycemia. Linear regression analysis of elapsed time and difference between initial and repeat glucose values showed near-zero correlation. CONCLUSIONS: The results of one local EMS system over a 104-week period demonstrate the feasibility, safety, and efficacy of using 100 mL of D10 as an alternative to D50. D50 may also have theoretical risks including extravasation injury, direct toxic effects of hypertonic dextrose, and potential neurotoxic effects of hyperglycemia. Additionally, our data suggest that there may be little or no short-term decrease in blood glucose results after D10 administration.

A Randomized Controlled Noninferiority Trial of Single Dose of Oral Dexamethasone Versus 5 Days of Oral Prednisone in Acute Adult Asthma.

STUDY OBJECTIVE: Oral dexamethasone demonstrates bioavailability similar to that of oral prednisone but has a longer half-life. We evaluate whether a single dose of oral dexamethasone plus 4 days of placebo is not inferior to 5 days of oral prednisone in treatment of adults with mild to moderate asthma exacerbations to prevent relapse defined as an unscheduled return visit for additional treatment for persistent or worsening asthma within 14 days. METHODS: Adult emergency department patients (aged 18 to 55 years) were randomized to receive either a single dose of 12 mg of oral dexamethasone with 4 days of placebo or a 5-day course of oral prednisone 60 mg a day. Outcomes including relapse were assessed by a follow-up telephone interview at 2 weeks. RESULTS: One hundred seventy-three dexamethasone and 203 prednisone subjects completed the study regimen and telephone follow-up. The dexamethasone group by a small margin surpassed the preset 8% difference between groups for noninferiority in relapse rates within 14 days (12.1% versus 9.8%; difference 2.3%; 95% confidence interval -4.1% to 8.6%). Subjects in the 2 groups had similar rates of hospitalization for their relapse visit (dexamethasone 3.4% versus prednisone 2.9%; difference 0.5%; 95% confidence interval -4.1% to 3.1%). Adverse effect rates were generally the same in the 2 groups. CONCLUSION: A single dose of oral dexamethasone did not demonstrate noninferiority to prednisone for 5 days by a very small margin for treatment of adults with mild to moderate asthma exacerbations. Enhanced compliance and convenience may support the use of dexamethasone regardless.

Results of a Rapid Hepatitis C Virus Screening and Diagnostic Testing Program in an Urban Emergency Department.

STUDY OBJECTIVE: We describe the results of an emergency department (ED) hepatitis C virus testing program that integrated birth cohort screening and screening of patients with a history of injection drug use, as well as physician diagnostic testing, according to national guidelines. METHODS: We conducted a retrospective cohort study using data collected as part of clinical care. The primary outcome was the hepatitis C virus prevalence among tested patients. We evaluated factors associated with testing positive with logistic regression. RESULTS: Of the 26,639 unique adults aged 18 years or older and presenting to the ED during the 6-month study, 2,581 (9.7%) completed hepatitis C virus screening (2,028) or diagnostic testing (553), of whom 267 were antibody positive (10.3% prevalence). Factors associated with testing positive for hepatitis C virus included injection drug use (38.4% prevalence; odds ratio [OR] 10.8; 95% confidence interval [CI] 7.5 to 15.5), homeless (25.5% prevalence; OR 3.1; 95% CI 1.5 to 6.8), diagnostic testing (14.8% prevalence; OR 2.6; 95% CI 1.7 to 3.9), birth cohort (13.7% prevalence; OR 3.6; 95% CI 2.4 to 5.3), and male sex (12.4% prevalence; OR 1.4; 95% CI 1.0 to 2.0). Of the 267 patients testing positive for hepatitis C virus antibody, 137 (51%) had documentation of result disclosure and 180 (67%) had confirmatory ribonucleic acid testing performed, of whom 126 (70%) had a positive result. Follow-up appointments at the hepatitis C virus clinic were arranged for 57 of the 126 (45%) patients with confirmed positive results, of which 30 attended. CONCLUSION: This ED screening and diagnostic testing program found a high prevalence of hepatitis C virus antibody positivity across all groups. Challenges encountered with hepatitis C virus screening included result disclosure, confirmatory testing, and linkage to care. Our results warrant continued efforts to develop and evaluate policies for ED-based hepatitis C virus screening.

Long-term mortality of patients surviving firearm violence.

OBJECTIVE: We aim to calculate the 5-year mortality after surviving to hospital discharge after a firearm injury and estimate the association of firearm injury with later mortality. METHODS: We performed a retrospective cohort study of patients from an urban emergency department (ED) and trauma centre in Oakland, California, USA, in 2007. We created three cohorts of patients presenting for (1) gunshot wound (GSW), (2) MVC and (3) assault without a firearm. Demographic and clinical information was obtained from the clinical chart, and the California Department of Public Health Vital Statistics and Social Security Death Master File (2007-2012) were queried to identify patients who died. RESULTS: We analysed 516 GSW patients, 992 MVC patients and 695 non-GSW assault patients. Of the GSW patients, 86.4% were alive at 5 years. All-cause 5-year mortality among GSW victims surviving to discharge after injury was 5.1%. Compared with MVC patients, both GSW and non-GSW assault patients have higher risk of death at 5 years (HR 2.54 (95% CI 1.41 to 4.59) and HR 1.64 (95% CI 1.01 to 2.68), respectively), adjusting for age, sex and race. Risk of death was higher in the first year for the GSW cohort (HR 6.14 (95% CI 2.35 to 16.08) and HR 5.06 (95% CI 1.88 to 13.63) as compared with MVC and non-GSW assault cohorts, respectively). Homicide was the cause of death in 79.2% of GSW patients who died after surviving the index injury. CONCLUSION: Among individuals presenting to the ED after injury or assault and surviving to discharge, firearm injury exposure is an important predictor of death within 5 years and most pronounced in the first year after injury.

Dextrose 10% in the treatment of out-of-hospital hypoglycemia.

INTRODUCTION: Prehospital first responders historically have treated hypoglycemia in the field with an IV bolus of 50 mL of 50% dextrose solution (D50). The California Contra Costa County Emergency Medical Services (EMS) system recently adopted a protocol of IV 10% dextrose solution (D10), due to frequent shortages and relatively high cost of D50. The feasibility, safety, and efficacy of this approach are reported using the experience of this EMS system. METHODS: Over the course of 18 weeks, paramedics treated 239 hypoglycemic patients with D10 and recorded patient demographics and clinical outcomes. Of these, 203 patients were treated with 100 mL of D10 initially upon EMS arrival, and full data on response to treatment was available on 164 of the 203 patients. The 164 patients' capillary glucose response to initial infusion of 100 mL of D10 was calculated and a linear regression line fit between elapsed time and difference between initial and repeat glucose values. Feasibility, safety, and the need for repeat glucose infusions were examined. RESULTS: The study cohort included 102 men and 62 women with a median age of 68 years. The median initial field blood glucose was 38 mg/dL, with a subsequent blood glucose median of 98 mg/dL. The median time to second glucose testing was eight minutes after beginning the 100 mL D10 infusion. Of 164 patients, 29 (18%) required an additional dose of IV D10 solution due to persistent or recurrent hypoglycemia, and one patient required a third dose. There were no reported adverse events or deaths related to D10 administration. Linear regression analysis of elapsed time and difference between initial and repeat glucose values showed near-zero correlation. CONCLUSIONS: In addition to practical reasons of cost and availability, theoretical risks of using 50 mL of D50 in the out-of-hospital setting include extravasation injury, direct toxic effects of hypertonic dextrose, and potential neurotoxic effects of hyperglycemia. The results of one local EMS system over an 18-week period demonstrate the feasibility, safety, and efficacy of using 100 mL of D10 as an alternative. Additionally, the linear regression line of repeat glucose measurements suggests that there may be little or no short-term decay in blood glucose values after D10 administration.

Gender moderates the association between posttraumatic stress disorder and mutual intimate partner violence in an emergency department sample.

INTRODUCTION: Patients in emergency departments (EDs) constitute a diverse population with multiple health-related risk factors, many of which are associated with intimate partner violence (IPV). This paper examines the interaction effect of depression, posttraumatic stress disorder (PTSD), impulsivity, drug use, adverse childhood experiences (ACEs), at-risk drinking, and having a hazardous drinker partner with gender on mutual physical IPV in an urban ED sample. METHODS: Research assistants surveyed 1037 married, cohabiting, or partnered patients in face-to-face interviews (87% response rate) regarding IPV exposure, alcohol and drug use, psychological distress, ACEs, and other sociodemographic features. IPV was measured with the Revised Conflict Tactics Scale. Interaction effects were examined in multinomial and logistic models. RESULTS: Results showed a significant interaction of gender and PTSD (odds ratio [OR] 3.06, 95% CI 1.21-7.23, p < 0.05) for mutual IPV. Regarding main effects, there were also statistically significant positive associations between mutual physical IPV and at-risk drinking (OR 1.73, 95% CI 1.07-2.77, p < 0.05), having a hazardous drinker partner (OR 2.19, 95% CI 1.35-3.55, p < 0.01), illicit drug use (OR 2.09, 95% CI 1.18-3.71, p < 0.01), ACEs (OR 1.23, 95% CI 1.06-1.42, p < 0.01), days of cannabis use past in the 12 months (OR 1.003, 95% CI 1.002-1.005, p < 0.001), and impulsivity (OR 2.04, 95% CI 1.29-3.22, p < 0.01). CONCLUSIONS: IPV risk assessment in EDs will be more effective if implemented with attention to patients' gender and the presence of various and diverse other risk factors, especially PTSD.

Increasing critical care admissions from U.S. emergency departments, 2001-2009.

OBJECTIVES: Little is known about how recent system-wide increases in demand for critical care have affected U.S. emergency departments (EDs). This study describes changes in the amount of critical care provided in U.S. EDs between 2001 and 2009. DESIGN: Analysis of data from the National Hospital Ambulatory Medical Care Survey for the years 2001-2009. SETTING: National multistage probability sample of U.S. ED data. U.S. ED capacity was estimated using the National Emergency Department Inventory-United States. PATIENTS: : ED patients admitted a critical care unit. INTERVENTIONS: None. MEASUREMENTS: Annual hours of ED-based critical care and annual number critical care ED visits. Clinical characteristics, demographics, insurance status, setting, geographic region, and ED length of stay for critically ill ED patients. MAIN RESULTS: Annual critical care unit admissions from U.S. EDs increased by 79% from 1.2 to 2.2 million. The proportion of all ED visits resulting in critical care unit admission increased from 0.9% to 1.6% (ptrend < 0.001). Between 2001 and 2009, the median ED length of stay for critically ill patients increased from 185 to 245 minutes (+ 60 min; ptrend < 0.02). For the aggregated years 2001-2009, ED length of stay for critical care visits was longer among black patients (12.6% longer) and Hispanic patients (14.8% longer) than among white patients, and one third of all critical care ED visits had an ED length of stay greater than 6 hrs. Between 2001 and 2009, total annual hours of critical care at U.S. EDs increased by 217% from 3.2 to 10.1 million (ptrend < 0.001). The average daily amount of critical care provided in U.S. EDs tripled from 1.8 to 5.6 hours per ED per day. CONCLUSIONS: The amount of critical care provided in U.S. EDs has increased substantially over the past decade, driven by increasing numbers of critical care ED visits and lengthening ED length of stay. Increased critical care burden will further stress an already overcapacity U.S. emergency care system.

Racial differences in receiving morphine among prehospital patients with blunt trauma.

BACKGROUND: Pain management is an important part of prehospital care, yet few studies have addressed the effects of age, sex, race, or pain severity on prehospital pain management. OBJECTIVES: To examine the association of sex, age, race, and pain severity with analgesia administration for blunt trauma in the prehospital setting. METHODS: In this retrospective cohort study, we used the automated registry of a large urban Emergency Medical Services agency to identify records of all patients transported for blunt trauma injuries between February 1 and November 1, 2009. We used bivariable and multivariable analyses with logistic regression models to determine the relationship between analgesia administration and patient sex, race, age, pain score on a pain scale, and time under prehospital care. RESULTS: We identified 6398 blunt trauma cases. There were 516 patients (8%) who received analgesia overall; among patients for whom a pain scale was recorded, 25% received analgesia. By multivariable analysis, adjusting for race, sex, age, time with patient, and pain score, African-American and Hispanic patients were less likely than Caucasian patients to receive analgesia. Pain score and prehospital time were both significant predictors of analgesia administration, with higher pain score and longer prehospital time associated with increased administration of pain medication. Neither sex nor age was a significant predictor of analgesia administration in the regression analysis. CONCLUSION: This study suggests that Caucasians are more likely than African-Americans or Hispanics to receive prehospital analgesia for blunt trauma injuries. In addition, patients with whom paramedics spend more time and for whom a pain score is recorded are more likely to receive analgesia.

Low rate of syphilis screening among high-risk emergency department patients tested for gonorrhea and chlamydia infections.

BACKGROUND: Implementing national recommendations for syphilis screening is not feasible in the emergency department (ED) setting. The purpose of this study was to determine the syphilis screening rate among ED patients tested for gonorrhea and chlamydia (GC/CT) and the syphilis prevalence among those who were tested. METHODS: A 1-year retrospective cohort study in an urban ED. At the time of this study, there were no explicit syphilis screening guidelines and testing was at the discretion of the treating physician. We determined the proportion of all GC/CT-tested patients who also underwent syphilis screening and the prevalence of syphilis among this group. Predictors of syphilis screening among patients tested for GC/CT were identified. RESULTS: GC/CT tests were performed in 3951 (4.7%) of the 83,988 ED visits, of which 332 (8.4%) were reactive. The mean age of GC/CT-tested patients was 22.6 ± 12 years, most were female (67%), black (47%), and English speaking (74%). Syphilis screening was completed in 1218 (31%) of the GC/CT-tested patients, 17 tests (1.4%) were reactive, which included 8 (0.7%) unique patients with newly diagnosed syphilis. In multivariable analysis, the following variables were predictive of syphilis screening: empirical GC/CT treatment (odds ratio [OR]: 1.9, 95% confidence interval [CI]: 1.6-2.3), evaluation in the low acuity section of the ED (OR: 1.8, 95% CI: 1.4-2.3), a reactive GC/CT test (OR: 1.3, 95% CI: 1.0-1.6), and age ≤25 years (OR: 1.2, 95% CI: 1.0-1.4). CONCLUSION: Among ED patients tested for GC/CT, less than one-third were screened for syphilis. Failure to screen these patients likely resulted in missed opportunities for syphilis diagnosis.

Ability of physicians to diagnose congestive heart failure based on chest X-ray.

BACKGROUND: Chest X-ray interpretation is an important skill in the diagnosis of congestive heart failure (CHF) by emergency physicians. OBJECTIVES: This study evaluated the ability of emergency physicians to recognize CHF on chest X-ray and the effect of level of training and confidence upon accuracy of interpretation. METHODS: This was a prospective, blinded study in which 24 patients with an elevated brain natriuretic peptide, low ejection fraction, and diagnosis of CHF were retrospectively identified. In addition, 31 patients without CHF were identified and used as controls. These 55 chest X-rays were presented to emergency attending and housestaff and a radiologist. We calculated the accuracy of the raters' diagnoses, and measured their confidence in that diagnosis and their level of training. RESULTS: Physicians correctly identified the CHF chest X-rays 79% of the time (sensitivity 59%, specificity 96%; positive likelihood ratio 14.6, negative likelihood ratio 0.43). Accuracy ranged from a low of 78% among first-year residents to a high of 85% among attending, and from 73% (confidence rating of 3/5) to 91% (confidence rating of 5/5). Increasing confidence was significantly correlated with accuracy across the spectrum (p = 0.001). An accuracy of 95% among radiologists suggests that a negative X-ray does not rule out CHF. CONCLUSIONS: High specificity (96%) and low sensitivity (59%) suggest that emergency physicians are excellent at identifying CHF on X-ray when present, but under-call it frequently. Sensitivity may be much higher in real life given clinical correlation. Both increased level of training and higher confidence significantly improved accuracy.

Emergency department control of blood pressure in intracerebral hemorrhage.

BACKGROUND: Early treatment of elevated blood pressure (BP) in patients presenting with spontaneous intracerebral hemorrhage (ICH) may decrease hematoma enlargement and lead to better neurologic outcome. STUDY OBJECTIVE: To determine whether early BP control in patients with spontaneous ICH is both feasible and tolerated when initiated in the Emergency Department (ED). METHODS: A single-center, prospective observational study in patients with spontaneous ICH was performed to evaluate a protocol to lower, and maintain for 24 h, the mean arterial pressure (MAP) to a range of 100-110 mm Hg within 120 min of arrival to the ED. An additional goal of placing a functional arterial line within 90 min was specified in our protocol. Hematoma volume, neurologic disability, adverse events, and in-hospital mortality were recorded. RESULTS: A total of 22 patients were enrolled over a 1-year study period. The average time to achieve our target MAP after implementation of our protocol was 123 min (range 19-297 min). The average time to arterial line placement was 84 min (range 36-160 min). Overall, 77% of the patients tolerated the 24-h protocol. The in-hospital mortality rate in this group of patients was 41%. CONCLUSIONS: Adopting a protocol to reduce and maintain the MAP to a target of 100-110 mm Hg within 120 min of ED arrival was safe and well tolerated in patients presenting with spontaneous ICH. If future trials demonstrate a clinical benefit of early BP control in spontaneous ICH, EDs should implement similar protocols.

Interrelationships of Economic Stressors, Mental Health Problems, Substance Use, and Intimate Partner Violence among Hispanic Emergency Department Patients: The Role of Language-Based Acculturation.

We analyzed the interrelationships of economic stressors, mental health problems, substance use, and intimate partner violence (IPV) among a sample of Hispanic emergency department patients and probed if Spanish language preference, which may represent low acculturation and/or immigrant status, had a protective effect, in accordance with the Hispanic health paradox. Study participants (n = 520; 50% female; 71% Spanish speakers) provided cross-sectional survey data. Gender-stratified logistic regression models were estimated for mental health problems (PTSD, anxiety, depression), substance use (risky drinking, cannabis, illicit drug use), and IPV. Results showed that economic stressors were linked with mental health problems among men and women. Among men, PTSD was associated with greater odds of cannabis and illicit drug use. Men who used cannabis and illicit drugs were more likely to report IPV. Male Spanish speakers had lower odds of anxiety and cannabis use than English speakers. Female Spanish speakers had lower odds of substance use and IPV than English speakers. The protective effect of Spanish language preference on some mental health, substance use, and IPV outcomes was more pronounced among women. Future research should identify the mechanisms that underlie the protective effect of Spanish language preference and explore factors that contribute to the observed gender differences.

Co-Occurrence of Multiple Risk Factors and Intimate Partner Violence in an Urban Emergency Department.

INTRODUCTION: Urban emergency departments (ED) provide care to populations with multiple health-related and overlapping risk factors, many of which are associated with intimate partner violence (IPV). We examine the 12-month rate of physical IPV and its association with multiple joint risk factors in an urban ED. METHODS: Research assistants surveyed patients regarding IPV exposure, associated risk factors, and other sociodemographic features. The joint occurrence of seven risk factors was measured by a variable scored 0-7 with the following risk factors: depression; adverse childhood experiences; drug use; impulsivity; post-traumatic stress disorder; at-risk drinking; and partner's score on the Alcohol Use Disorders Identification Test. The survey (N = 1037) achieved an 87.5% participation rate. RESULTS: About 23% of the sample reported an IPV event in the prior 12 months. Logistic regression showed that IPV risk increased in a stepwise fashion with the number of present risk factors, as follows: one risk factor (adjusted odds ratio [AOR] [3.09]; 95% confidence interval [CI], 1.47-6.50; p<.01); two risk factors (AOR [6.26]; 95% CI, 3.04-12.87; p<.01); three risk factors (AOR = 9.44; 95% CI, 4.44-20.08; p<.001); four to seven risk factors (AOR [18.62]; 95% CI, 9.00-38.52; p<001). Ordered logistic regression showed that IPV severity increased in a similar way, as follows: one risk factor (AOR [3.17]; 95% CI, 1.39-7.20; p<.01); two risk factors (AOR [6.73]; 95% CI, 3.04-14.90; p<.001); three risk factors (AOR [10.36]; 95%CI, 4.52-23.76; p<.001); four to seven risk factors (AOR [20.61]; 95% CI, 9.11-46.64; p<001). CONCLUSION: Among patients in an urban ED, IPV likelihood and IPV severity increase with the number of reported risk factors. The best approach to identify IPV and avoid false negatives is, therefore, multi-risk assessment.

Frequency of Intimate Partner Violence among an Urban Emergency Department Sample: A Multilevel Analysis.

Intimate partner violence (IPV) is a pervasive public health problem. Within the U.S., urban emergency department (ED) patients have elevated prevalence of IPV, substance use, and other social problems compared to those in the general household population. Using a social-ecological framework, this cross-sectional study analyzes the extent to which individual, household, and neighborhood factors are associated with the frequency of IPV among a socially disadvantaged sample of urban ED patients. Confidential survey interviews were conducted with 1037 married/partnered study participants (46% male; 50% Hispanic; 29% African American) at a public safety-net hospital. Gender-stratified multilevel Tobit regression models were estimated for frequency of past-year physical IPV (perpetration and victimization) and frequency of severe IPV. Approximately 23% of participants reported IPV. Among men and women, impulsivity, adverse childhood experiences, substance use, and their spouse/partner's hazardous drinking were associated with IPV frequency. Additionally, household food insufficiency, being fired or laid off from their job, perceived neighborhood disorder, and neighborhood demographic characteristics were associated with IPV frequency among women. Similar patterns were observed in models of severe IPV frequency. IPV prevention strategies implemented in urban ED settings should address the individual, household, and neighborhood risk factors that are linked with partner aggression among socially disadvantaged couples.