Race Differences in Interventions and Survival After Out‐of‐Hospital Cardiac Arrest in North Carolina, 2010 to 2014

Background Following the implementation of the HeartRescue project, with interventions in the community, emergency medical services, and hospitals to improve care and outcomes for out‐of‐hospital cardiac arrests (OHCA) in North Carolina, improved bystander and first responder treatments as well as survival were observed. This study aimed to determine whether these improvements were consistent across Black versus White individuals. Methods and Results Using the Cardiac Arrest Registry to Enhance Survival (CARES), we identified OHCA from 16 counties in North Carolina (population 3 million) from 2010 to 2014. Temporal changes in interventions and outcomes were assessed using multilevel multivariable logistic regression, adjusted for patient and socioeconomic neighborhood‐level factors. Of 7091 patients with OHCA, 36.5% were Black and 63.5% were White. Black patients were younger, more females, had more unwitnessed arrests and non‐shockable rhythm (Black: 81.0%; White: 75.4%). From 2010 to 2014, the adjusted probabilities of bystander cardiopulmonary resuscitation (CPR) went from 38.5% to 51.2% in White, P <0.001; and 36.9% to 45.6% in Black, P =0.002, and first‐responder defibrillation went from 13.2% to 17.2% in White, P =0.002; and 14.7% to 17.3% in Black, P =0.16. From 2010 to 2014, survival to discharge only increased in White (8.0% to 11.4%, P =0.004; Black 8.9% to 9.5%, P =0.60), though, in shockable patients the probability of survival to discharge went from 24.8% to 34.6% in White, P =0.02; and 21.7% to 29.0% in Black, P =0. 10. Conclusions After the HeartRescue program, bystander CPR and first‐responder defibrillation increased in both patient groups; however, survival only increased significantly for White patients.

Influences on seeking a contraceptive method among adolescent women in three cities in Nigeria

Background Despite international support for increasing access to contraceptives among adolescents, gaps in use still exist worldwide. Past research has identified barriers to use across all levels of the socioecological model including restrictive policies, a lack of youth friendly services, and knowledge gaps. This study was conducted to further identify influences on contraceptive use among adolescent girls in Nigeria in hopes of guiding future policies and programs. Methods In 2018, 12 focus group discussions (FGD) were conducted in three cities in Nigeria with young women ages 15–24 with the objective of determining what and who influence adolescents’ contraceptive seeking behaviors. A vignette structure was used to identify perceptions on injunctive and descriptive community norms that influence adolescent contraceptive behaviors. The FGDs were conducted by members of the University of Ibadan Centre for Population and Reproductive Health (CPRH) and analyzed by a researcher at the University of North Carolina-Chapel Hill’s Carolina Population Center using a thematic analysis approach. Results Participants identified community level resistance to sex and contraceptive use among unmarried adolescents though also acknowledged that these adolescent behaviors are still occurring despite established norms. Concerns about side effects and the preservation of fertility were frequently attached to contraceptive use and pointed to as a reason for community resistance to contraceptive use among this population. Participants saw peers, parents and partners as influencers on a girl’s decision to seek a method, though each were believed to play a different role in that decision. Conclusion The findings show that that despite barriers created by established injunctive norms, young women with a supportive social network can access contraceptive methods despite these barriers. By harnessing the influence of peers, partners and parents, the Nigerian family planning efforts can strive to improve the health and well-being of young people.

Status of an Anomalous Population of Northern Long-Eared Bats in Coastal North Carolina

Although previously well-documented in the mountains of the Blue Ridge Ecoregion of western North Carolina, the northern long-eared bat Myotis septentrionalis was only recently discovered in coastal North Carolina in 2007. After being listed as a federally threatened species in April 2015, a five-year effort of mist net surveys and tracking was initiated to better understand the species’ distribution and behavior in eastern North Carolina. Since 2015, 163 healthy northern long-eared bats have been captured, and the documented range of the species has expanded from 4 coastal counties to 19. Captures occurred in all months of the year and mostly occurred in or adjacent to wetland forests. Captures were limited to the Middle Atlantic Coastal Plain Ecoregion of the state, and the maximum distance from the Atlantic Ocean or associated sounds was &lt;87 km. Northern long-eared bats have not been documented in the Southeastern Plains or Piedmont Ecoregions of North Carolina. The lack of captures in the middle portion of the state suggests geographically disjunct populations of the species in North Carolina. During late fall–winter netting and tracking, northern long-eared bats were observed to be active throughout most of the winter and roosted in trees. Across three late fall–winter seasons from 2015–2018, 43 northern long-eared bats were tracked to 165 winter roost trees. Most (94.6%) winter roost trees occurred in wetland forest. Winter roost trees varied greatly in species, diameter-at-breast-height, status (dead or live), and type of roost (cavity, crack, crevice, or exfoliating bark). The species’ lack of long-term hibernation in coastal North Carolina documents a vastly different survival strategy as opposed to the well-documented hibernation strategy the species is known to use in the rest of its range. This portion of the state is nearly devoid of caves or mines suitable for hibernacula, but also experiences milder winters with low-level insect activity. During spring 2019, 21 reproductive females were captured in the northernmost portion of the coastal plain of North Carolina and tracked to 64 maternity roost trees. Pregnant females began to be captured on April 25, and juveniles began to be captured on June 16. This indicates that pups are likely born in late May in the northern portion of the coastal plain of North Carolina, but birth likely occurs earlier in the southern portion of the coastal plain of the state. Most (92.2%) maternity roost trees occurred in wetland forest. Maternity roost trees varied greatly in species, diameter-at-breast-height, status, and type of roost. Swab samples collected during late fall–winter from 198 bats from species susceptible to white-nose syndrome provided no evidence of Pseudogymnoascus destructans. Since northern long-eared bats in coastal North Carolina are active most of the winter and not dependent upon caves or mines for hibernation, they are likely not susceptible to white-nose syndrome. With the species in sharp decline elsewhere due to white-nose syndrome, this coastal North Carolina population and a recently discovered coastal South Carolina population may serve as a refugium for the species.

2733. Association Between Influenza Vaccination Coverage and Ambulatory Antibiotic Prescription Rates in Children in South Carolina

Background Prior studies demonstrated an increase in ambulatory antibiotic prescription rates during the peak of Influenza virus activity, which often occurs during the first 4 months of the year in Southeastern United States. However, the impact of Influenza vaccination coverage on antibiotic prescription rates remains undefined. The purpose of this retrospective cohort study is to examine the association between Influenza vaccination coverage and ambulatory antibiotic prescription rates in children in South Carolina from 2012 to 2017. Methods Medicaid and State Employee Health Plan pharmacy claims for outpatient oral antibiotics were utilized for estimation of community antibiotic prescription rates in South Carolina population 6 months to 17 years of age from January 1, 2012 to December 31, 2017, which represents approximately 60% of the South Carolina population in this age group. Linear regression was used to examine the association between antibiotic prescription rates in January to April of each year and Influenza vaccine coverage in children 6 months to 17 years old after adjustments for Influenza vaccine effectiveness in that season as obtained from Centers for Disease Control and Prevention (CDC). Results During the 6-year study period, the mean antimicrobial prescription rate in children in South Carolina declined from 103 to 79 per 1000 person-months for the months January through April indicating a 26% decline (P < 0.0001). Influenza vaccine coverage also increased from 50.6% during the first Influenza season of the study and peaked at 60.7% in 2014–2015 Influenza season (Figure 1). After adjusting for the vaccine effectiveness, the decline in antibiotic prescription rate was significantly associated with an increase in vaccine coverage in children (P-value < 0.01). Antibiotic prescription rates declined by 3 per 1,000 person-months for each 1% increase in Influenza vaccine coverage in children. Conclusion There is a temporal association between the increase in Influenza vaccination coverage and the decline in ambulatory antibiotic prescription rates in children in South Carolina. Achieving the CDC’s set target Influenza vaccination coverage of 70% of the population may be associated with greater decline in ambulatory antibiotic prescription rates in children in the future. Disclosures All authors: No reported disclosures.

975. Clostridium difficile Infection and Antibiotic Prescription Rates in the Community: Explaining the Gender Gap

Background Previous studies have reported higher incidence rates of community-associated Clostridium difficile infection (CA-CDI) in women than in men. This cross-sectional population-based study examines whether this difference in CA-CDI rates across genders is driven by or independent of antibiotic use. Methods Medicaid and State Employee Health Plan pharmacy claims for outpatient oral antibiotics and associated medical claims were utilized for estimation of community antibiotic prescription rates in South Carolina population 18 to 64 years of age from January 1, 2015 to December 31, 2015. CA-CDI cases were identified from National Healthcare Safety Network (NHSN) and South Carolina Infectious Disease and Outbreak Network (SCION) through complete enumeration of South Carolina population of the same age and study period as above. Incidence rates of CA-CDI were reported in both men and women 18–39 and 40–64 years of age before and after adjustments for antibiotic prescription rates in the same gender and age group. The 95% confidence intervals (CI) were calculated to examine statistical difference in incidence rates across genders within the same age group. Results During the calendar year 2015, a total of 1,564 CA-CDI cases were identified in South Carolina residents 18–64 years of age. The incidence rate of CA-CDI per 100,000 person-years was higher in women than in men in age groups 18–39 years (37.3 [95% CI: 32.8–41.8] vs. 21.0 [95% CI: 17.6–24.4]) and 40–64 years (86.4 [95% CI: 80.1–92.8] vs. 56.6 [95% CI: 51.2–61.9]. Similarly, antibiotic prescription rates per 100 person-years were higher in women than men in the 2 respective age groups (118.8 [95% CI: 118.3–119.3] vs. 54.3 [95% CI: 53.9–54.8] and 130.4 [95% CI: 129.8–130.9] vs. 83.8 [95% CI: 83.3–84.4]. After adjustments for antibiotic prescriptions, there was no significant difference in the incidence rates of CA-CDI per 100,000 prescriptions between women and men 18–39 years of age (31.4 [95% CI: 27.6–35.2] vs. 38.6 [95% CI: 32.4–44.8] and 40–64 years old (66.3 [95% CI 61.5–71.2] vs. 67.5 [95% CI: 61.1–73.8]). Conclusion Higher crude incidence rates of CA-CDI in women are likely due to higher outpatient antibiotic prescription rates in women when compared with men. Disclosures P. B. Bookstaver, CutisPharma: Scientific Advisor, &lt;$1,000. Melinta Therapeutics: Speaker’s Bureau, &lt;$1,000.

Prevalence of Autism Spectrum Disorders Among Children With Intellectual Disability

Autism spectrum disorders (ASD) often co-occur with intellectual disability (ID) and are associated with poorer psychosocial and family-related outcomes than ID alone. The present study examined the prevalence, stability, and characteristics of ASD estimates in 2,208 children with ASD and ID identified through the South Carolina Autism and Developmental Disabilities Network. The prevalence of ASD in ID was 18.04%, relative to ASD rates of 0.60%–1.11% reported in the general South Carolina population. Compared to children with ASD alone, those with comorbid ID exhibited increased symptom severity and distinct DSM-IV-TR profiles. Further work is needed to determine whether current screening, diagnostic, and treatment practices adequately address the unique needs of children and families affected by comorbid ASD and ID diagnoses.