Lenora M. Olson

Mortality Reduction with Air Bag and Seat Belt Use in Head-on Passenger Car Collisions

To assess the efficacy of occupant protection systems, the authors measured the mortality reduction associated with air bag deployment and seat belt use for drivers involved in head-on passenger car collisions in the United States. They used a matched case-control design of all head-on collisions involving two passenger cars reported to the Fatality Analysis Reporting System in 1992-1997, and driver mortality differences between the paired crash vehicles for air bag deployment and seat belt use were measured with matched-pair odds ratios. Conditional logistic regression was used to adjust for multiple effects. There were 9,859 head-on collisions involving 19,718 passenger cars and drivers. Air bag deployment reduced mortality 63% (crude odds ratio (OR) = 0.37, 95% confidence interval (CI): 0.32, 0.42), while lap-shoulder belt use reduced mortality 72% (OR = 0.28, 95% CI: 0.25, 0.31). In a conditional logistic model that adjusted for vehicle (rollover, weight, age) and driver (age, sex) factors, air bags (OR = 0.71, 95% CI: 0.58, 0.87) and any combination of seat belts (OR = 0.25, 95% CI: 0.22, 0.29) were both associated with reduced mortality. Combined air bag and seat belt use reduced mortality by more than 80% (OR = 0.18, 95% CI: 0.13, 0.25). Thus, this study confirms the independent effect of air bags and seat belts in reducing mortality.

Effect of Motor Vehicle Crashes on Adverse Fetal Outcomes

OBJECTIVE To assess the effect of maternal involvement in motor vehicle crashes on the likelihood of adverse pregnancy outcomes and to estimate the effect of seatbelt use in reducing the occurrence of those outcomes. METHODS Statewide motor vehicle crash, birth, and fetal death records from 1992 to 1999 were probabilistically linked. Logistic regression was used to compare the likelihood of adverse birth and fetal outcomes including low birth weight, prematurity, placental abruption, fetal distress, excessive bleeding, fetal death, and other complications among pregnant women in crashes and those not in crashes. RESULTS Of 322,704 single live resident births, 8938 mothers (2.8%) experienced a crash during pregnancy. Pregnant women using seatbelts were not significantly more at risk for adverse fetal outcomes than pregnant women not in crashes. However, pregnant women who did not wear seatbelts during a crash were 1.3 times more likely to have a low birth weight infant than pregnant women not in a crash (95% confidence interval [CI] 1.0, 1.6) and twice as likely to experience excessive maternal bleeding than belted pregnant women in a crash (95% CI 1.0, 4.2). Forty-five of 2645 fetal deaths were linked to a motor vehicle crash, with unbelted pregnant women 2.8 times more likely to experience a fetal death than belted pregnant women in crashes (95% CI 1.4, 5.6). CONCLUSION Pregnant women should be counseled to wear seatbelts throughout pregnancy and reduce crash risk.

Social contexts of regular smoking in adolescence: Towards a multidimensional ecological model

Using data from the Add Health, this study examined multilevel factors of adolescent smoking after controlling for the baseline smoking behavior and individual characteristics. Results showed that peer, family and school were all important life domains contextually influencing subsequent smoking behavior among adolescents. Time spent with peers, best friend smoking and household member smoking were associated with higher risk. Parent-child closeness, parental control, attending a private school and having a higher percentage of Hispanic students at school were protective factors. Significant interaction effects were found between parental control and household member smoking and between parent-child closeness and communication. None of the neighborhood- and state-level factors were significant in the final full model but they were significant in reduced models. More proximate social contexts appear to play a more direct and immediate role in adolescent smoking than macro-level factors. An ecological model incorporating multiple social systems seems more fruitful than single-system models to reveal etiology of adolescent smoking.

Motor vehicle crash characteristics and medical outcomes among older drivers in Utah, 1992-1995

STUDY OBJECTIVE We sought to compare the characteristics and medical outcomes of motor vehicle crashes for drivers 70 years and older with those of drivers between the ages of 30 and 39 years. METHODS We probabilistically linked statewide motor vehicle crash and hospital discharge data between the years of 1992 and 1995 for the state of Utah. We calculated the odds of older drivers exhibiting certain motor vehicle crash characteristics compared with younger drivers. Adjusting for nighttime crash, high-speed crash, and seatbelt use, we calculated the odds of an older driver being killed or hospitalized compared with those of a younger driver. RESULTS During the study years, there were 14,466 drivers older than 69 years and 68,706 drivers between the ages of 30 and 39 years involved in motor vehicle crashes in Utah. Older drivers were less likely to have crashes involving drug or alcohol use (odds ratio [OR] 0.1; 95% confidence interval [CI] 0.1 to 0.2) and less likely to have crashes at high speed (OR 0.6; 95% CI 0.6 to 0.7). Although older drivers were no more likely to have a crash involving a right-hand turn (OR 1.0; 95% CI 0.9 to 1.1) than younger drivers, they were over twice as likely to have a crash involving a left-hand turn (OR 2.3; 95% CI 2.2 to 2.5). Also, older drivers were more likely to be killed or hospitalized than younger drivers (OR, 3.5; P <.001). Among belted drivers, an older driver was nearly 7 times more likely to be killed or hospitalized than a younger driver (OR 6. 9; 95% CI 5.4 to 8.9). CONCLUSION Older drivers do have distinctive motor vehicle crash patterns. Interventions must be taken to reduce the number of left-hand turn crashes involving older drivers. In addition, further research is needed to design, implement, and evaluate countermeasures that may enable older drivers to continue driving while keeping public safety in the forefront.

A National Assessment of Pediatric Readiness of Emergency Departments

IMPORTANCE Previous assessments of readiness of emergency departments (EDs) have not been comprehensive and have shown relatively poor pediatric readiness, with a reported weighted pediatric readiness score (WPRS) of 55. OBJECTIVES To assess US EDs for pediatric readiness based on compliance with the 2009 guidelines for care of children in EDs; to evaluate the effect of physician/nurse pediatric emergency care coordinators (PECCs) on pediatric readiness; and to identify gaps for future quality initiatives by a national coalition. DESIGN, SETTING, AND PARTICIPANTS Web-based assessment of US EDs (excluding specialty hospitals and hospitals without an ED open 24 hours per day, 7 days per week) for pediatric readiness. All 5017 ED nurse managers were sent a 55-question web-based assessment. Assessments were administered from January 1 through August 23, 2013. Data were analyzed from September 12, 2013, through January 11, 2015. MAIN OUTCOMES AND MEASURES A modified Delphi process generated a WPRS. An adjusted WPRS was calculated excluding the points received for the presence of physician and nurse PECCs. RESULTS Of the 5017 EDs contacted, 4149 (82.7%) responded, representing 24 million annual pediatric ED visits. Among the EDs entered in the analysis, 69.4% had low or medium pediatric volume and treated less than 14 children per day. The median WPRS was 68.9 (interquartile range [IQR] 56.1-83.6). The median WPRS increased by pediatric patient volume, from 61.4 (IQR, 49.5-73.6) for low-pediatric-volume EDs compared with 89.8 (IQR, 74.7-97.2) for high-pediatric-volume EDs (P < .001). The median percentage of recommended pediatric equipment available was 91% (IQR, 81%-98%). The presence of physician and nurse PECCs was associated with a higher adjusted median WPRS (82.2 [IQR, 69.7-92.5]) compared with no PECC (66.5 [IQR, 56.0-76.9]) across all pediatric volume categories (P < .001). The presence of PECCs increased the likelihood of having all the recommended components, including a pediatric quality improvement process (adjusted relative risk, 4.11 [95% CI, 3.37-5.02]). Barriers to guideline implementation were reported by 80.8% of responding EDs. CONCLUSIONS AND RELEVANCE These data demonstrate improvement in pediatric readiness of EDs compared with previous reports. The physician and nurse PECCs play an important role in pediatric readiness of EDs, and their presence is associated with improved compliance with published guidelines. Barriers to implementation of guidelines may be targeted for future initiatives by a national coalition whose goal is to ensure day-to-day pediatric readiness of our nations EDs.

Prediction of child abuse risk from emergency department use.

OBJECTIVE To examine whether pre-abuse rates and patterns of emergency department (ED) visits between children with supported child abuse and age-matched control subjects are useful markers for abuse risk. STUDY DESIGN A population-based case-control study using probabilistic linkage of four statewide data sets. Cases were abused children <13 years of age, identified between January 1, 2002, and December 31, 2002. For each case, a birth date-matched, population-based control was obtained. Outcome measures were rate ratios of ED visits in cases compared with control subjects. RESULTS Cases (n = 9795) and control subjects (n = 9795) met inclusion criteria; 4574 cases (47%) had an ED visit; thus linked to the ED database versus 2647 control subjects (27%). The crude ED visit rate per 10,000 person-days of exposure was 8.2 visits for cases compared with 3.9 visits for control subjects. Cases were almost twice as likely as control subjects (adjusted rate ratio = 1.8; 95% CI, 1.5, 1.8) to have had a prior ED visit. Leading ED discharge diagnoses were similar for both groups. CONCLUSIONS Children with supported child abuse have higher ED use before abuse diagnosis, when compared with the general pediatric population. However, neither the rate of ED use nor the pattern of diagnoses offers sufficient specificity to be useful markers of risk for abuse.

A National Assessment of Knowledge, Attitudes, and Confidence of Prehospital Providers in the Assessment and Management of Child Maltreatment

OBJECTIVE. The goal was to assess the knowledge and confidence in recognition, management, documentation, and reporting of child maltreatment among a representative sample of emergency medical services personnel in the United States. METHODS. A questionnaire was developed and pilot-tested, with the input of experts in emergency medical services and child maltreatment, to assess knowledge, attitudes, confidence, and training needs regarding assessment and treatment of child maltreatment. The questionnaire was distributed nationally to a random sample of prehospital providers by using a previously validated sampling plan. RESULTS. Of 2863 surveys sent to prehospital providers, 1237 (43%) were returned. Most prehospital providers reported receiving ≤1 hour of continuing medical education regarding child maltreatment. Most (78%) asked for additional educational opportunities, with only 3% stating that they required no additional training. Participants lacked knowledge regarding the developmental abilities of children, management of families in which child maltreatment is suspected, key elements of the history that should be noted, and the degree of suspicion necessary for reporting. CONCLUSIONS. Prehospital providers expressed confidence in their abilities to recognize and to manage cases of child abuse and neglect; however, significant deficiencies were reported in several critical knowledge areas, including identification of child maltreatment, interviewing techniques, and appropriate documentation.

Health indicators, social support, and intimate partner violence among women utilizing services at a community organization

PURPOSE Intimate partner violence (IPV) against women is a significant public health concern. This study examines the physical and mental health status and relationship to social support for women seeking services to end IPV at a walk-in community organization that serves the community at large, including a shelter for abused women. METHODS One hundred seventeen (117) English-speaking women between the ages of 18 and 61 years participated in a self-administered survey. Physical, mental, and oral health, social support, and IPV homicide lethality were measured using standardized instruments. RESULTS Social support was the most important factor related to better health. The participants who had more social support reported better physical (p < .05), mental (p < .01), and oral health (p < .05), and a lower level of psychological distress (p < .01) and depression (p < .01) compared with participants who reported less social support. The participants living in the shelter reported worse physical health (p < .05) but better mental health (p < .05) than the participants not living in a shelter. Older age and low income were related to oral health problems, whereas older age, low education level, and unemployment were related to poor mental health. CONCLUSION The present study adds to the evidence that social support contributes to improving physical and mental health for women who experience IPV. The findings also suggest the importance of providing or referring women to mental health services.

Against all advice: An analysis of out-of-hospital refusals of care

STUDY OBJECTIVE We examine the characteristics of patients involved in out-of-hospital emergency medical services (EMS) incidents that result in refusal of care and determine the rates of subsequent EMS, emergency department (ED), and inpatient care, as well as death within 7 days. METHODS Utah statewide EMS data identifying refusals of care were probabilistically linked to Utah statewide ED, inpatient, and death certificate data within 7 days of the initial EMS refusals for 1996 to 1998. Refusals were defined as incidents in which field treatment or transport was refused and did not include incidents in which EMS providers deemed care or transport unnecessary. RESULTS Of 277244 EMS incidents, 14109 (5.1%) resulted in refusals of care. For all age groups, motor vehicle crash dispatches resulted in the highest rate of refusal of care, ranging from 8.0% to 11.7%. Slightly more than 3% of patients involved in a refusal of care incident had a subsequent EMS dispatch within a week. One fifth of the patients involved in EMS refusals of care had a subsequent ED visit. Less than 2% of the EMS refusal patients were hospitalized; hospitalization was highest among children younger than 3 years and adults older than 64 years. Twenty-five adults died within a week of refusing EMS care, of whom 19 (76.0%) were older than 64 years. CONCLUSION Refusal of care incidents are a small segment of all EMS incidents. They arise from a variety of situations, and the risk for missed intervention may be minimal.

Guns, alcohol, and intimate partner violence: the epidemiology of female suicide in New Mexico.

Suicide is among the leading causes of death in the United States, and in women the second leading cause of injury death overall. Previous studies have suggested links between intimate partner violence and suicide in women. We examined female suicide deaths to identify and describe associated risk factors. We reviewed all reports from the New Mexico Office of the Medical Investigator for female suicide deaths occurring in New Mexico from 1990 to 1994. Information abstracted included demographics, mechanism of death, presence of alcohol/drugs, clinical depression, intimate partner violence, health problems, and other variables. Annual rates were calculated based on the 1990 census. The New Mexico female suicide death rate was 8.2/100,000 persons per year (n = 313), nearly twice the U.S. rate of 4.5/100,000. Non-Hispanic whites were overrepresented compared to Hispanics and American Indians. Decedents ranged in age from 14 to 93 years (median = 43 years). Firearms accounted for 45.7% of the suicide deaths, followed by ingested poisons (29.1%), hanging (10.5%), other (7.7%), and inhaled poisons (7.0%). Intimate partner violence was documented in 5.1% of female suicide deaths; in an additional 22.1% of cases, a male intimate partner fought with or separated from the decedent immediately preceding the suicide. Nearly two-thirds (65.5%) of the decedents had alcohol or drugs present in their blood at autopsy. Among decedents who had alcohol present (34.5%), blood alcohol levels were far higher among American Indians compared to Hispanics and non-Hispanic Whites (p = .01). Interpersonal conflict was documented in over 25% of cases, indicating that studies of the mortality of intimate partner violence should include victims of both suicide and homicide deaths to fully characterize the mortality patterns of intimate partner violence.