Voice-Activated Cognitive Behavioral Therapy for Insomnia: A Randomized Clinical Trial.

Importance: Insomnia symptoms affect an estimated 30% to 50% of the 4 million US breast cancer survivors. Previous studies have shown the effectiveness of cognitive behavioral therapy for insomnia (CBT-I), but high insomnia prevalence suggests continued opportunities for delivery via new modalities. Objective: To determine the efficacy of a CBT-I-informed, voice-activated, internet-delivered program for improving insomnia symptoms among breast cancer survivors. Design, Setting, and Participants: In this randomized clinical trial, breast cancer survivors with insomnia (Insomnia Severity Index [ISI] score >7) were recruited from advocacy and survivorship groups and an oncology clinic. Eligible patients were females aged 18 years or older who had completed curative treatment more than 3 months before enrollment and had not undergone other behavioral sleep treatments in the prior year. Individuals were assessed for eligibility and randomized between March 2022 and October 2023, with data collection completed by December 2023. Intervention: Participants were randomized 1:1 to a smart speaker with a voice-interactive CBT-I program or educational control for 6 weeks. Main Outcomes and Measures: Linear mixed models and Cohen d estimates were used to evaluate the primary outcome of changes in ISI scores and secondary outcomes of sleep quality, wake after sleep onset, sleep onset latency, total sleep time, and sleep efficiency. Results: Of 76 women enrolled (38 each in the intervention and control groups), 70 (92.1%) completed the study. Mean (SD) age was 61.2 (9.3) years; 49 (64.5%) were married or partnered, and participants were a mean (SD) of 9.6 (6.8) years from diagnosis. From baseline to follow-up, ISI scores changed by a mean (SD) of -8.4 (4.7) points in the intervention group compared with -2.6 (3.5) in the control group (P < .001) (Cohen d, 1.41; 95% CI, 0.87-1.94). Sleep diary data showed statistically significant improvements in the intervention group compared with the control group for sleep quality (0.56; 95% CI, 0.39-0.74), wake after sleep onset (9.54 minutes; 95% CI, 1.93-17.10 minutes), sleep onset latency (8.32 minutes; 95% CI, 1.91-14.70 minutes), and sleep efficiency (-0.04%; 95% CI, -0.07% to -0.01%) but not for total sleep time (0.01 hours; 95% CI, -0.27 to 0.29 hours). Conclusions and Relevance: This randomized clinical trial of an in-home, voice-activated CBT-I program among breast cancer survivors found that the intervention improved insomnia symptoms. Future studies may explore how this program can be taken to scale and integrated into ambulatory care. Trial Registration: ClinicalTrials.gov Identifier: NCT05233800.

Online and offline gendered racial microaggressions and sleep quality for Black women.

OBJECTIVE: Poor sleep quality affects Black women in the United States. Black young adult women experience stress from gendered racial microaggressions (i.e., subtle unfair treatment from being a Black woman). Studies of exposure to this stressor have focused on in-person contexts (i.e., offline). Yet Black young adults are nearly constantly online. The current study examines the associations between online and offline gendered racial microaggressions and sleep quality. METHOD: Data came from a convenience sample of Black young adult women (N = 478; ages 18-35) and were collected online in the fall of 2021. Participants completed an online survey in which they self-reported demographics and COVID-19 stress covariates, online and offline exposure to gendered racial microaggressions, and sleep quality. Utilizing linear (outcome: continuous sleep quality score) and logistic (outcome: dichotomized clinically significant poor sleep quality) regression models, we examined direct and vicarious online gendered racial microaggressions. RESULTS: Most participants (67.2%) reported poor sleep quality. More offline gendered racism (ß = .14) and vicarious online gendered racism (ß = .14) were each uniquely associated with poorer sleep quality. However, only exposure to vicarious online gendered racism was uniquely associated with a 33% increased odds of clinically relevant poor sleep quality (95% confidence interval [1.09, 1.63]). CONCLUSIONS: Offline and online gendered racial microaggressions are stressors with sleep quality implications. Vicarious online gendered racial microaggressions are uniquely associated with lower sleep quality and therefore may be a new avenue for future research and intervention. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

A retrospective cost-effectiveness analysis of different cognitive-behavioral therapy for insomnia intervention delivery approaches in adult cancer survivors.

BACKGROUND: Cognitive-behavioral therapy for insomnia (CBT-I) is considered the gold standard treatment for insomnia. Prior trials have delivered CBT-I across a range of treatment sessions. Understanding the economics of varying treatment approaches is essential for future implementation considerations. METHODS: We conducted a retrospective cost-effectiveness analysis from the provider's perspective, comparing the implementation of a three-session CBT-I program for cancer survivors (CBT-I-CS) versus a stepped care treatment approach consisting of an initial single sleep education session followed by CBT-I-CS if elevated insomnia symptoms persisted. The effectiveness measure used was the percentage of participants whose insomnia had remitted by the end of each program. RESULTS: Stepped care delivery was more effective than CBT-I-CS alone, resulting in 35.4% more remitted patients by the end of the overall program. For a $480 willingness to pay threshold per percentage of remitted patients, stepped care CBT-I-CS reached a 98% probability of being cost-effective, while CBT-I-CS alone had only a 2% probability. Larger group sessions in the first step of a stepped care delivery model resulted in more favorable cost-effectiveness. CONCLUSIONS: A stepped care delivery model may be a more cost-effective approach if it can be implemented efficiently. These findings inform policies aimed at improving cancer survivors' access to much-needed insomnia treatment in settings where financial resources for CBT-I may be limited, and be an important barrier to treatment dissemination. CLINICAL TRIAL REGISTRATION: These analyses were not registered.

Generative artificial intelligence, human creativity, and art.

Recent artificial intelligence (AI) tools have demonstrated the ability to produce outputs traditionally considered creative. One such system is text-to-image generative AI (e.g. Midjourney, Stable Diffusion, DALL-E), which automates humans' artistic execution to generate digital artworks. Utilizing a dataset of over 4 million artworks from more than 50,000 unique users, our research shows that over time, text-to-image AI significantly enhances human creative productivity by 25% and increases the value as measured by the likelihood of receiving a favorite per view by 50%. While peak artwork Content Novelty, defined as focal subject matter and relations, increases over time, average Content Novelty declines, suggesting an expanding but inefficient idea space. Additionally, there is a consistent reduction in both peak and average Visual Novelty, captured by pixel-level stylistic elements. Importantly, AI-assisted artists who can successfully explore more novel ideas, regardless of their prior originality, may produce artworks that their peers evaluate more favorably. Lastly, AI adoption decreased value capture (favorites earned) concentration among adopters. The results suggest that ideation and filtering are likely necessary skills in the text-to-image process, thus giving rise to "generative synesthesia"-the harmonious blending of human exploration and AI exploitation to discover new creative workflows.

Mechanisms of sleep disturbances in long-term cancer survivors: a childhood cancer survivor study report.

BACKGROUND: Sleep problems following childhood cancer treatment may persist into adulthood, exacerbating cancer-related late effects and putting survivors at risk for poor physical and psychosocial functioning. This study examines sleep in long-term survivors and their siblings to identify risk factors and disease correlates. METHODS: Childhood cancer survivors (≥5 years from diagnosis; n = 12 340; 51.5% female; mean [SD] age = 39.4 [9.6] years) and siblings (n = 2395; 57.1% female; age = 44.6 [10.5] years) participating in the Childhood Cancer Survivor Study completed the Pittsburgh Sleep Quality Index (PSQI). Multivariable Poisson-error generalized estimating equation compared prevalence of binary sleep outcomes between survivors and siblings and evaluated cancer history and chronic health conditions (CHC) for associations with sleep outcomes, adjusting for age (at diagnosis and current), sex, race/ethnicity, and body mass index. RESULTS: Survivors were more likely to report clinically elevated composite PSQI scores (>5; 45.1% vs 40.0%, adjusted prevalence ratio [PR] = 1.20, 95% CI = 1.13 to 1.27), symptoms of insomnia (38.8% vs 32.0%, PR = 1.26, 95% CI = 1.18 to 1.35), snoring (18.0% vs 17.4%, PR = 1.11, 95% CI = 1.01 to 1.23), and sleep medication use (13.2% vs 11.5%, PR = 1.28, 95% CI = 1.12 to 1.45) compared with siblings. Within cancer survivors, PSQI scores were similar across diagnoses. Anthracycline exposure (PR = 1.13, 95% CI = 1.03 to 1.25), abdominal radiation (PR = 1.16, 95% CI = 1.04 to 1.29), and increasing CHC burden were associated with elevated PSQI scores (PRs = 1.21-1.48). CONCLUSIONS: Among survivors, sleep problems were more closely related to CHC than diagnosis or treatment history, although longitudinal research is needed to determine the direction of this association. Frequent sleep-promoting medication use suggests interest in managing sleep problems; behavioral sleep intervention is advised for long-term management.

Improve accessibility to evidence-based treatment for insomnia disorder.

The Society of Behavioral Medicine supports increasing access to evidence-based treatment of insomnia by addressing barriers at the patient, provider, and systemic levels including support from government agencies to raise awareness about sleep and sleep disorders, health payors providing fair reimbursement for evidence-based insomnia assessment and therapy consistent with standard of care recommendations, and relevant training programs (e.g. psychologists, nurses, physicians, social workers, licensed professional counselors) to prioritize sleep health education.

The Society of Behavioral Medicine supports making treatment for insomnia more available to people who need it. This could include using several solutions that target different people who can make a difference. One solution could be public health campaigns that increase awareness of the treatment options for insomnia among patients and providers. A second solution could include encouraging training programs for behavioral health providers to focus more on learning how to offer insomnia treatment. A third solution could be advocating with insurance companies to provide higher financial support for these services from well-trained providers.

A novel voice interactive sleep log: concurrent validity with actigraphy and sleep diaries.

This is a preliminary validation study of a novel approach to an interactive sleep data collection platform. We compared actigraphy, paper and pencil logs, and the novel voice interactive sleep log in a sample of 17 breast cancer survivors with insomnia symptoms and also report qualitative data on acceptability. We used correlation coefficients and Bland Altman plots to evaluate convergent validity across these measures and report means for acceptability ratings. The sleep log data collected via paper and pencil vs the voice interactive measure had comparable mean values and variable validity coefficients across key sleep variables compared to actigraphy except for wake after sleep onset, where the voice-interactive system had fair concurrent validity with actigraphy. The voice interactive sleep log has several advantages over pencil and paper logs and actigraphy as it reduces patient burden, automatically calculates sleep variables, documents the timeliness of response and provides daily feedback to respondents on calculated sleep metrics. CLINICAL TRIAL REGISTRATION: Registry: ClinicalTrials.gov; Identifier: NCT05233800. CITATION: Lewin D, Starling CM, Zhou ES, Greenberg D, Shaw C, Arem H. A novel voice interactive sleep log: concurrent validity with actigraphy and sleep diaries. J Clin Sleep Med. 2024;20(2):309-312.

Developing a culturally tailored digital health intervention for insomnia in Black women.

Insomnia disorder is highly prevalent among Black women. Cognitive-behavioral therapy for insomnia (CBT-I) is considered the optimal treatment, but very little efficacy research has been conducted in minority populations. Culturally tailoring intervention content may increase participant engagement and improve treatment outcomes. We culturally tailored an Internet-delivered CBT-I program (Sleep Healthy Using the Internet; SHUTi) for Black women. First, relevant stakeholders were identified. Semi-structured interviews were conducted after stakeholders completed each of the six SHUTi intervention sessions. Questions focused on improving program relatability and engagement for Black women. Key themes pertinent to peripheral, evidential, and sociocultural strategies for cultural adaptation were identified using thematic content analysis, and adaptation recommendations were developed. A total of 50 interviews, across 9 stakeholders, were conducted. Two overarching themes were identified: (i) there was limited visual African American representation, and (ii) there was a lack of diversity in the environments and lifestyles of the patient vignettes. Respondents provided peripheral, evidential, and sociocultural recommendations for program modifications, emphasizing the importance of race-concordant visual content and didactic content exploring the diverse cultural and social contexts in which insomnia occurs for Black women. As more diverse patients seek evidence-based insomnia treatment, digital health interventions must consider whether it is therapeutically important to address and tailor for cultural differences. Here, stakeholders made clear recommendations for taking cultural contexts into account to improve patient engagement with the program. Further research should work to understand the extent to which culturally tailored interventions are beneficial for health outcomes among minority populations.

Insomnia disorder is common among Black women. Cognitive-behavioral therapy for insomnia (CBT-I) is considered the gold standard treatment, but there have been few studies of this treatment in minority populations. Culturally tailoring the content of this intervention may increase a patient's willingness to seek this treatment and to respond better to the treatment. To study this, we conducted interviews with important stakeholders to determine how we should modify a proven online CBT-I intervention called Sleep Healthy Using the Internet (SHUTi). We were told that it was important to increase the amount of culturally specific visual content in the intervention materials, as well as make the stories told within the program more diverse. As we begin to see more diverse patient populations seeking evidence-based insomnia treatment, digital health interventions would be wise to consider whether developers should tailor elements of their program to recognize cultural differences.

When Cancer Centers Snooze, Patients Lose: It is Time to Make Insomnia a Priority for Survivors.

Insomnia is a big problem for cancer survivors. Prioritizing evaluation and treatment is essential!

Gentrification and childhood obesity: Evidence from New York City public school students in public housing.

OBJECTIVE: The study objective was to determine the effect of gentrification on the weight outcomes of New York City public school students living in public housing. METHODS: In a prospective cohort of 19,022 New York City public school students in public housing followed during 2009-2017, weight outcomes of students living in public housing buildings in gentrified neighborhoods were compared to those living in consistently low-socioeconomic-status neighborhoods; assignment was quasi-random in each borough. RESULTS: Among the 42,182 student-year observations, gentrification did not increase weight outcomes significantly, for BMI z scores (0.037; 95% CI: -0.012 to 0.086), obesity (0.6 percentage points [pp]; 95% CI: -0.9 to 2.1), or overweight (1.3 pp; 95% CI: -0.7 to 3.2). However, heterogeneous effects by borough were found, where the gentrification in Manhattan increased students' BMI z scores by 0.19 (95% CI: 0.09-0.29), obesity by 3.4 pp (95% CI: 0.03-6.5), and overweight by 9.2 pp (95% CI: 6.3-12.1). No heterogeneity by race and ethnicity, gender, or age was found. CONCLUSIONS: With strong internal validity, this study shows that neighborhood gentrification differentially influenced children's health through obesity, based on borough of residence. Such findings could inform policies or interventions focused on subpopulations and geographies.

A nursing perspective on inpatient sleep and circadian disruptions for pediatric stem cell transplant patients.

BACKGROUND: Children treated with stem cell transplant (SCT) are routinely hospitalized for long periods where they are exposed to significant sleep and circadian disruptions. As nurses play a primary role in symptom management during SCT, we sought to understand their perspective on patient sleep and circadian disruptions, perceived barriers to a good sleep and circadian environment, and suggestions for improvement. PROCEDURE: Four focus groups were conducted with pediatric SCT nurses (N = 25 participants). A semistructured focus group guide was administered, with the discussions recorded and transcribed. A multistage thematic analysis combining prefigured and emergent dimensions was conducted. Our analysis focused on drawing comparisons within and across focus groups to understand the unique work experiences that participants had related to the patient's sleep and circadian environment. RESULTS: Three key themes emerged. First, nurses expressed a high awareness of how disruptive the hospital environment is for patients. Second, nurses described their extensive efforts to try to minimize the impact of these disruptions. Finally, they provided clear recommendations for how to improve upon these concerns, along with barriers that they perceive could impede implementation. CONCLUSIONS: Front-line caregivers on a pediatric SCT unit describe key contributors to sleep/circadian disturbances for patients. Within the constraints of the considerable medical needs of this patient population and the physical room/hospital environment, nurses strive to minimize these disruptions to the best of their ability. It is crucial that hospitals assess and remediate these disturbances for these children that have important implications for overall health.

Sleep Treatment Education Program for Young Adult Cancer Survivors (STEP-YA): Protocol for an Efficacy Trial.

BACKGROUND: Young adult cancer survivors (YACS) are at elevated risk for chronic insomnia, even years after completing treatment. In addition to potential health consequences, insomnia can interrupt social, educational, and vocational development just as they are trying to "make up" for time lost to cancer. Cognitive behavioral therapy for insomnia (CBTI) is recommended as first-line treatment for insomnia but remains largely unavailable to YACS due to several barriers (ie, shortage of trained providers, geographic limitations, financial limitations). Traditional CBTI has not been adapted to meet YACS' unique developmental and circadian challenges. To improve availability of effective behavioral insomnia treatment for this population, we developed the Sleep Treatment Education Program for Young Adult Cancer Survivors (STEP-YA), a low-intensity educational intervention delivered virtually online. OBJECTIVE: In this phase 2 "proof of concept" trial, primary aims are to test the efficacy of STEP-YA to improve insomnia symptoms and mood in YACS and assess the utility of individualized coaching to improve treatment effects. A secondary aim will explore participant variables associated with clinically significant response to STEP-YA. METHODS: This 2-arm randomized prospective trial will enroll 74 off-treatment YACS aged 20 years to 39 years with clinically significant insomnia. Each participant completes the STEP-YA intervention in a 1-on-1 synchronous online session led by a trained interventionist following a structured outline. The 90-minute intervention presents educational information on the development of insomnia after cancer and offers specific suggestions for improving insomnia symptoms. During the session, participants review the suggestions and develop a personalized sleep action plan for implementing them. After the session, participants are randomized to either the coaching condition, in which they receive 2 telephone coaching sessions, or the no-coaching condition, which offers no subsequent coaching. The Insomnia Severity Index (ISI) and the Profile of Mood States: Short Form (POMS-SF) are assessed at baseline and 4 and 8 weeks postintervention. RESULTS: Enrollment began in November 2022, with 28 participants currently enrolled. We anticipate recruitment will be completed in 2024. The primary endpoint is a change in ISI score from baseline to 8 weeks postintervention. The secondary endpoint is change in mood symptoms (POMS-SF) from baseline to 8 weeks postintervention. Change scores will be treated as continuous variables. Primary analyses will use ANOVA methods. A within-subjects analysis will examine if the STEP-YA intervention is associated with significant changes in insomnia and mood over time. A 2-way ANOVA will be used to evaluate the utility of coaching sessions to improve treatment effects. CONCLUSIONS: Chronic insomnia has significant negative effects on YACS' medical, educational, and psychological functioning. STEP-YA aims to address their needs; study results will determine if the intervention warrants future effectiveness and dissemination studies and if individualized coaching is necessary for adequate treatment response. TRIAL REGISTRATION: ClinicalTrials.gov NCT05358951: https://clinicaltrials.gov/study/NCT05358951. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/52315.

Sleep and circadian disruptors: Unhealthy noise and light levels for hospitalized pediatric patients.

Noise and light levels during hospitalizations can disrupt sleep and circadian health, resulting in worsened health outcomes. This study describes patterns of noise and light for inpatient children undergoing stem cell transplants. Objective meters tracked noise and light levels every minute for 6 months. Median overnight sound was 55 dB (equivalent to conversational speech). There were 3.4 loud noises (>80 dB) per night on average. Children spent 62% of the 24-h cycle in nonoptimal lighting, with daytime light dimmer than recommended 98% of the time. Over the 6-month period, the lowest overnight noise level recorded exceeded World Health Organization recommendations for sleep, with frequent spikes into ranges known to cause wakings. During the day, children were rarely exposed to light sufficient to preserve healthy circadian rhythms. Hospitals should address systematic environmental and workflow disruptors to improve the sleep and circadian health of patients, particularly those already at elevated risk for health morbidities.

BioThings Explorer: a query engine for a federated knowledge graph of biomedical APIs.

SUMMARY: Knowledge graphs are an increasingly common data structure for representing biomedical information. These knowledge graphs can easily represent heterogeneous types of information, and many algorithms and tools exist for querying and analyzing graphs. Biomedical knowledge graphs have been used in a variety of applications, including drug repurposing, identification of drug targets, prediction of drug side effects, and clinical decision support. Typically, knowledge graphs are constructed by centralization and integration of data from multiple disparate sources. Here, we describe BioThings Explorer, an application that can query a virtual, federated knowledge graph derived from the aggregated information in a network of biomedical web services. BioThings Explorer leverages semantically precise annotations of the inputs and outputs for each resource, and automates the chaining of web service calls to execute multi-step graph queries. Because there is no large, centralized knowledge graph to maintain, BioThings Explorer is distributed as a lightweight application that dynamically retrieves information at query time. AVAILABILITY AND IMPLEMENTATION: More information can be found at https://explorer.biothings.io and code is available at https://github.com/biothings/biothings_explorer.

Understanding sleep quality in a national cohort of young adult cancer survivors: Results from the YACPRIME study.

PURPOSE: A cancer diagnosis in young adulthood can negatively impact sleep quality. The present study describes sleep issues in young adults (YAs) and analyzes potential demographic and clinical characteristics related to sleep quality. METHODS: Canadian YAs (n = 359) diagnosed with cancer between ages 15-39 participated in the study. Pittsburgh Sleep Quality Index (PSQI) items were examined to identify specific sleep issues that occurred 3+ times per week. Logistic regression was used to examine demographic, clinical, and symptom-related variables associated with poor sleep quality (defined as a PSQI global score >8) and sleep medication use. RESULTS: Participants were predominantly female (87.5%) with an average age of 32 years. Of the sample, 52% had poor sleep quality, 55.5% took >30 min to fall asleep, 32.9% slept <7 h, and 54.6% reported a habitual sleep efficiency of <85%. YAs with poor sleep quality were 5.7 times more likely to report severe distress (p=<.001), as well as 1.8 times more likely to report poorer mental (p = .03) and physical functioning (p = .05). Nearly half (44%) of YAs used sleep medication to help them sleep. YAs who reported severe psychological distress were 2.4 times more likely to use sleeping medication (p = .01), whereas those with a household income ≥$100,000/year were half as likely to use medication to help with sleep (p = .04). CONCLUSION: Psychological distress is associated with worse sleep quality and sleep medication use in YA cancer survivors. Sleep quality may be a possible target for future research and intervention to promote long-term function and recovery.

Gaps in Parental Understanding of Sleep Disturbances During Maintenance Therapy for Pediatric Acute Lymphoblastic Leukemia.

Background: Acute lymphoblastic leukemia (ALL) is the most common cancer in childhood, with survival rates approaching 90%. Sleep disturbance is common among ALL patients, often developing during the initial stages of chemotherapy treatment. While there have been significant efforts to understand and intervene in this issue during survivorship, there is far less research on children who are actively receiving treatment. In the current study, we sought to better understand the parent's experience in the sleep domain during maintenance therapy, including their perceptions of how their child's medical team had managed sleep disturbances, and recommendations for how to improve sleep management. Method: Fifteen parents of pediatric ALL patients (aged 4-12 years) completed semistructured interviews. Interview content was analyzed using a multistage thematic analysis. Results: Parents consistently expressed feeling unprepared to manage the sleep disruptions that arose during treatment, often reporting that they did not recall being told this would be a side effect. They were enthusiastic about learning how to improve their child's sleep, though they did not want pharmacotherapeutic interventions or additional medical/psychosocial appointments to address this. Conclusion: Despite consistent provider communication on sleep, parents report limited knowledge of the issue. This provides an obvious intervention target to improve treatment-related sleep disturbances. Clear messaging may help direct parents' attention and expectations regarding their child's treatment and potential for disturbed sleep, possibly in the form of a behavioral intervention that empowers parents with information about how to support their child's sleep health while they are undergoing treatment for ALL.

Trends over 20 years of antimicrobial prophylaxis for artificial urinary sphincter surgery.

INTRODUCTION AND OBJECTIVE: Perioperative antimicrobial prophylaxis is crucial for prevention of prosthesis and patient morbidity after artificial urinary sphincter (AUS) placement. While antibiotic guidelines exist for many urologic procedures, adoption patterns for AUS surgery are unclear. We aimed to assess trends in antibiotic prophylaxis for AUS and outcomes relative to American Urological Association (AUA) Best Practice guidelines. METHODS: The Premier Healthcare Database was queried from 2000 to 2020. Encounters involving AUS insertion, revision/removal, and associated complications were identified via ICD and CPT codes. Premier charge codes were used to identify antibiotics used during the insertion encounter. AUS-related complication events were found using patient hospital identifiers. Univariable analysis between hospital/patient characteristics and use of guideline-adherent antibiotics was done via chi-squared and Kruskal-Wallis tests. A multivariable logistic mixed effects model was used to assess factors related to the odds of complication, specifically the use of guideline-adherent versus nonadherent regimens. RESULTS: Of 9775 patients with primary AUS surgery, 4310 (44.1%) received guideline-adherent antibiotics. The odds of guideline-adherent regimen use increased 7.7% per year with 53.0% (830/1565) receiving guideline-adherent antibiotics by the end of the study period. Patients with guideline-adherent regimens had a decreased risk of any complication (odds ratio [OR]: 0.83, 95% confidence interval [CI]: 0.74-0.93) and surgical revision (OR: 0.85, 95% CI: 0.74-0.96) within 3 months; however, no significant difference in infection within was noted (OR: 0.89, 95% CI: 0.68-1.17) within 3 months. CONCLUSIONS: Adherence to AUA antimicrobial guidelines for AUS surgery appears to have increased over the last two decades. While guideline-adherent regimens were associated with decreased risk of any complication and surgical intervention, no significant association was found with risk of infection. Surgeons appear to be increasingly following AUA recommendations for antimicrobial prophylaxis for AUS surgery, however, further level 1 evidence should be obtained to demonstrate conclusive benefit of these regimens.

BioThings Explorer: a query engine for a federated knowledge graph of biomedical APIs.

Knowledge graphs are an increasingly common data structure for representing biomedical information. These knowledge graphs can easily represent heterogeneous types of information, and many algorithms and tools exist for querying and analyzing graphs. Biomedical knowledge graphs have been used in a variety of applications, including drug repurposing, identification of drug targets, prediction of drug side effects, and clinical decision support. Typically, knowledge graphs are constructed by centralization and integration of data from multiple disparate sources. Here, we describe BioThings Explorer, an application that can query a virtual, federated knowledge graph derived from the aggregated information in a network of biomedical web services. BioThings Explorer leverages semantically precise annotations of the inputs and outputs for each resource, and automates the chaining of web service calls to execute multi-step graph queries. Because there is no large, centralized knowledge graph to maintain, BioThing Explorer is distributed as a lightweight application that dynamically retrieves information at query time. More information can be found at https://explorer.biothings.io, and code is available at https://github.com/biothings/biothings_explorer.