Variation in emergency department wait times for children by race/ethnicity and payment source

Relationship between racial disparities in ED wait times and illness severity

BACKGROUND

Prolonged emergency department (ED) wait times could potentially lead to increased mortality. Studies have demonstrated that black patients waited significantly longer for ED care than nonblack patients. However, the disparity in wait times need not necessarily manifest across all illness severities. We hypothesize that, on average, black patients wait longer than nonblack patients and that the disparity is more pronounced as illness severity decreases.

METHODS

We studied 34143 patient visits in 353 hospital EDs in the National Hospital Ambulatory Medical Care Survey in 2008. In a 2-model approach, we regressed natural logarithmically transformed wait time on the race variable, other patient-level variables, and hospital-level variables for 5 individually stratified illness severity categories. We reported results as percent difference in wait times, with 95% confidence intervals. We used P < .05 for significance level.

RESULTS

On average, black patients experienced significantly longer mean ED wait times than white patients (69.2 vs 53.3 minutes; P < .001). In the multivariate model, black patients did not experience significant different wait times for the 2 most urgent severity categories; black patients experienced increasingly longer waits vs nonblack patients for the 3 least urgent severity categories (14.7%, P < .05; 15.9%, P < .05; 29.9%, P < .001, respectively).

CONCLUSION

Racial disparity in ED wait times between black and nonblack patients exists, and the size of the disparity is more pronounced as illness severity decreases. We do not find a racial disparity in wait times for critically ill patients.

Health outcomes in US children with abdominal pain at major emergency departments associated with race and socioeconomic status

OBJECTIVE

Over 9.6 million ED visits occur annually for abdominal pain in the US, but little is known about the medical outcomes of these patients based on demographics. We aimed to identify disparities in outcomes among children presenting to the ED with abdominal pain linked to race and SES.

METHODS

Data from 4.2 million pediatric encounters of abdominal pain were analyzed from 43 tertiary US children's hospitals, including 2.0 million encounters in the emergency department during 2004-2011. Abdominal pain was categorized as functional or organic abdominal pain. Appendicitis (with and without perforation) was used as a surrogate for abdominal pain requiring emergent care. Multivariate analysis estimated likelihood of hospitalizations, radiologic imaging, ICU admissions, appendicitis, appendicitis with perforation, and time to surgery and hospital discharge.

RESULTS

Black and low income children had increased odds of perforated appendicitis (aOR, 1.42, 95% CI, 1.32- 1.53; aOR, 1.20, 95% CI 1.14 - 1.25). Blacks had increased odds of an ICU admission (aOR, 1.92, 95% CI 1.53 - 2.42) and longer lengths of stay (aHR, 0.91, 95% CI 0.86 - 0.96) than Whites. Minorities and low income also had lower rates of imaging for their appendicitis, including CT scans. The combined effect of race and income on perforated appendicitis, hospitalization, and time to surgery was greater than either separately.

CONCLUSIONS

Based on race and SES, disparity of health outcomes exists in the acute ED setting among children presenting with abdominal pain, with differences in appendicitis with perforation, length of stay, and time until surgery.

Impact of English proficiency on care experiences in a pediatric emergency department

OBJECTIVE

To compare emergency department care experiences of Spanish-speaking, limited-English-proficient (SSLEP) and English-proficient (EP) parents and to assess how SSLEP care experiences vary by parent-perceived interpretation accuracy.

METHODS

The National Research Corporation Picker Institute's Family Experience Survey (FES) was administered from November 26, 2010, to July 17, 2011, to 478 EP and 152 SSLEP parents. Problem scores for 3 FES dimensions were calculated: information/education, partnership with clinicians, and access/coordination of care. Adjusted associations between language proficiency (SSLEP vs EP) and dimension problem scores were examined by multivariate Poisson regression. Unadjusted Poisson regression analysis was used to examine the association between perceived interpretation accuracy and FES problem scores for SSLEP parents who received interpretation.

RESULTS

SSLEP parents had a higher risk of reporting problems with access/coordination of care compared to EP parents (risk ratio 1.6, 95% confidence interval 1.2, 2.1). There were no differences in reported care experiences related to information/education or partnership with clinicians. Among SSLEP parents who received professional interpretation, those reporting poor accuracy had a higher risk of also reporting problems with information/education (risk ratio 2.1, 95% confidence interval 1.2, 3.6).

CONCLUSIONS

In a pediatric emergency department with around-the-clock access to professional interpretation, SSLEP parents report poorer experiences than EP parents with access/coordination of care, including perceived wait times. Their experiences with provision of information/education and partnership with clinicians approximate those of EP parents. However, SSLEP parents who perceive poor interpretation accuracy report more problems understanding information provided about their child's illness and care.

Children's Mental Health Visits to the Emergency Department: Factors Affecting Wait Times and Length of Stay

Objective. This study explores the association of patient and emergency department (ED) mental health visit characteristics with wait time and length of stay (LOS). Methods. We examined data from 580 ED mental health visits made to two urban EDs by children aged ≤18 years from April 1, 2004, to March 31, 2006. Logistic regressions identified characteristics associated with wait time and LOS using hazard ratios (HR) with 95% confidence intervals (CIs). Results. Sex (male: HR = 1.48, 95% CI = 1.20-1.84), ED type (pediatric ED: HR = 5.91, 95% CI = 4.16-8.39), and triage level (Canadian Triage and Acuity Scale (CTAS) 2: HR = 3.62, 95% CI = 2.24-5.85) were statistically significant predictors of wait time. ED type (pediatric ED: HR = 1.71, 95% CI = 1.18-2.46), triage level (CTAS 5: HR = 2.00, 95% CI = 1.15-3.48), number of consultations (HR = 0.46, 95% CI = 0.31-0.69), and number of laboratory investigations (HR = 0.75, 95% CI = 0.66-0.85) predicted LOS. Conclusions. Based on our results, quality improvement initiatives to reduce ED waits and LOS for pediatric mental health visits may consider monitoring triage processes and the availability, access, and/or time to receipt of specialty consultations.

Association of race and ethnicity with management of abdominal pain in the emergency department

OBJECTIVE

To determine if race/ethnicity-based differences exist in the management of pediatric abdominal pain in emergency departments (EDs).

METHODS

Secondary analysis of data from the 2006-2009 National Hospital Ambulatory Medical Care Survey regarding 2298 visits by patients ≤ 21 years old who presented to EDs with abdominal pain. Main outcomes were documentation of pain score and receipt of any analgesics, analgesics for severe pain (defined as ≥ 7 on a 10-point scale), and narcotic analgesics. Secondary outcomes included diagnostic tests obtained, length of stay (LOS), 72-hour return visits, and admission.

RESULTS

Of patient visits, 70.1% were female, 52.6% were from non-Hispanic white, 23.5% were from non-Hispanic black, 20.6% were from Hispanic, and 3.3% were from "other" racial/ethnic groups; patients' mean age was 14.5 years. Multivariate logistic regression models adjusting for confounders revealed that non-Hispanic black patients were less likely to receive any analgesic (odds ratio [OR]: 0.61; 95% confidence interval [CI]: 0.43-0.87) or a narcotic analgesic (OR: 0.38; 95% CI: 0.18-0.81) than non-Hispanic white patients (referent group). This finding was also true for non-Hispanic black and "other" race/ethnicity patients with severe pain (ORs [95% CI]: 0.43 [0.22-0.87] and 0.02 [0.00-0.19], respectively). Non-Hispanic black and Hispanic patients were more likely to have a prolonged LOS than non-Hispanic white patients (ORs [95% CI]: 1.68 [1.13-2.51] and 1.64 [1.09-2.47], respectively). No significant race/ethnicity-based disparities were identified in documentation of pain score, use of diagnostic procedures, 72-hour return visits, or hospital admissions.

CONCLUSIONS

Race/ethnicity-based disparities exist in ED analgesic use and LOS for pediatric abdominal pain. Recognizing these disparities may help investigators eliminate inequalities in care.

Racial disparities in ordering laboratory and radiology tests for pediatric patients in the emergency department

OBJECTIVE

The objective of this study was to examine the association of race and language on laboratory and radiological testing in the pediatric emergency department (ED).

METHODS

This retrospective, case-cohort study examined laboratory and radiological testing among patients discharged home from 2 urban, pediatric EDs between March 2, 2009, and March 31, 2010.

RESULTS

There were 75,254 visits among 49,164 unique patients, of whom 31.0% had laboratory and 30.5% had radiological testing. African American (adjusted odds ratio [aOR], 0.93; confidence interval [CI], 0.89-0.98; P = 0.004) and biracial racial categories (aOR, 0.91; CI, 0.86-0.98; P = 0.007) were associated with decreased odds of laboratory testing compared with non-Hispanic whites. Similarly, Native American (aOR, 0.82; CI, 0.73-0.94), African American (aOR0.81; CI, 0.72-0.81), biracial (aOR, 0.82; CI, 0.77-0.88), Hispanic (aOR.76; CI, 0.72-0.81), and "other" (aOR, 0.84; CI, 0.73-0.97) racial categories were each associated with lower odds of radiological testing compared with non-Hispanic whites. Subgroup analysis of visits with a final diagnosis of fever and upper respiratory tract infection, conditions for which there were few treatment protocols, confirmed the racial differences. Subgroup analysis in visits for head injury, for which there is an established evaluation protocol, did not find a lower odds of laboratory or radiological testing by race compared with non-Hispanic whites.

CONCLUSIONS

Racial disparities in laboratory and radiological testing were present in pediatric ED visits. No racial differences were seen in the radiological and laboratory charges in the head injury subgroup, suggesting that evaluation algorithms can ameliorate racial disparities in pediatric ED care.

Effect of testing and treatment on emergency department length of stay using a national database

OBJECTIVES

Testing and treatment are essential aspects of the delivery of emergency care. Recognition of the effects of these activities on emergency department (ED) length of stay (LOS) has implications for administrators planning efficient operations, providers, and patients regarding expectations for length of visit; researchers in creating better models to predict LOS; and policy-makers concerned about ED crowding.

METHODS

A secondary analysis was performed using years 2006 through 2008 of the National Hospital Ambulatory Medical Care Survey (NHAMCS), a nationwide study of ED services. In univariate and bivariate analyses, the authors assessed ED LOS and frequency of testing (blood test, urinalysis, electrocardiogram [ECG], radiograph, ultrasound, computed tomography [CT], or magnetic resonance imaging [MRI]) and treatment (providing a medication or performance of a procedure) according to disposition (discharged or admitted status). Two sets of multivariable models were developed to assess the contribution of testing and treatment to LOS, also stratified by disposition. The first was a series of logistic regression models to provide an overview of how testing and treatment activity affects three dichotomized LOS cutoffs at 2, 4, and 6 hours. The second was a generalized linear model (GLM) with a log-link function and gamma distribution to fit skewed LOS data, which provided time costs associated with tests and treatment.

RESULTS

Among 360 million weighted ED visits included in this analysis, 227 million (63%) involved testing, 304 million (85%) involved treatment, and 201 million (56%) involved both. Overall, visits with any testing were associated with longer LOS (median = 196 minutes; interquartile range [IQR] = 125 to 305 minutes) than those with any treatment (median = 159 minutes; IQR = 91 to 262 minutes). This difference was more pronounced among discharged patients than admitted patients. Obtaining a test was associated with an adjusted odds ratio (OR) of 2.29 (95% confidence interval [CI] = 1.86 to 2.83) for experiencing a more than 4-hour LOS, while performing a treatment had no effect (adjusted OR = 0.84; 95% CI = 0.68 to 1.03). The most time-costly testing modalities included blood test (adjusted marginal effects on LOS = +72 minutes; 95% CI = 66 to 78 minutes), MRI (+64 minutes; 95% CI = 36 to 93 minutes), CT (+59 minutes; 95% CI = 54 to 65 minutes), and ultrasound (US; +56 minutes; 95% CI = 45 to 67 minutes). Treatment time costs were less substantial: performing a procedure (+24 minutes; 95% CI = 20 to 28 minutes) and providing a medication (+15 minutes; 95% CI = 8 to 21 minutes).

CONCLUSIONS

Testing and less substantially treatment were associated with prolonged LOS in the ED, particularly for blood testing and advanced imaging. This knowledge may better direct efforts at streamlining delivery of care for the most time-costly diagnostic modalities or suggest areas for future research into improving processes of care. Developing systems to improve efficient utilization of these services in the ED may improve patient and provider satisfaction. Such practice improvements could then be examined to determine their effects on ED crowding.

Emergency department volume and racial and ethnic differences in waiting times in the United States

BACKGROUND

Racial and ethnic differences in emergency department (ED) waiting times have been observed previously.

OBJECTIVES

We explored how adjusting for ED attributes, particularly visit volume, affected racial/ethnic differences in waiting time.

RESEARCH DESIGN

We constructed linear models using generalized estimating equations with 2007-2008 National Hospital Ambulatory Medical Care Survey data.

SUBJECTS

We analyzed data from 54,819 visits to 431 US EDs.

MEASURES

Our dependent variable was waiting time, measured from arrival to time seen by physician, and was log transformed because it was skewed. Primary independent variables were individual race/ethnicity (Hispanic and non-Hispanic white, black, other) and ED race/ethnicity composition (covariates for percentages of Hispanics, blacks, and others). Covariates included patient age, triage assessment, arrival by ambulance, payment source, volume, region, and teaching hospital.

RESULTS

Geometric mean waiting times were 27.3, 37.7, and 32.7 minutes for visits by white, black, and Hispanic patients. Patients waited significantly longer at EDs serving higher percentages of black patients; per 25 point increase in percent black patients served, waiting times increased by 23% (unadjusted) and 13% (adjusted). Within EDs, black patients waited 9% (unadjusted) and 4% (adjusted) longer than whites. The ED attribute most strongly associated with waiting times was visit volume. Waiting times were about half as long at low-volume compared with high-volume EDs (P<0.001). For Hispanic patients, differences were smaller and less robust to model choice.

CONCLUSIONS

Non-Hispanic black patients wait longer for ED care than whites primarily because of where they receive that care. ED volume may explain some across-ED differences.

Examining effectiveness of medical interpreters in emergency departments for Spanish-speaking patients with limited English proficiency: results of a randomized controlled trial

STUDY OBJECTIVES

This study examines whether availability of in-person professional interpreter services during emergency department (ED) visits affects satisfaction of limited English proficient patients and their health providers, using a randomized controlled trial.

METHODS

We randomized time blocks during which in-person professional interpreters were available to Spanish-speaking patients in the EDs of 2 central New Jersey hospitals. We assessed the intervention's effects on patient and provider satisfaction through a multilevel regression model that accounted for the nesting of patients within time blocks and controlled for the patient's age and sex, hospital, and when the visit occurred (weekday or weekend).

RESULTS

During the 7-month intake period, 242 patients were enrolled during 101 treatment time blocks and 205 patients were enrolled during 100 control time blocks. Regression-adjusted results indicate that 96% of treatment group patients were "very satisfied" (on a 5-point Likert scale) with their ability to communicate during the visit compared with 24% of control group patients (odds ratio=72; 95% confidence interval 31 to 167). (Among control group members who were not very satisfied, responses ranged from "very dissatisfied" to "somewhat satisfied.") Similarly, physicians, triage nurses, and discharge nurses were more likely to be very satisfied with communication during treatment time blocks than during control time blocks. We did not assess acuity of illness or global measures of satisfaction.

CONCLUSION

Use of in-person, professionally trained medical interpreters significantly increases Spanish-speaking limited English proficient patients' and their health providers' satisfaction with communication during ED visits.