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The associations of polycyclic aromatic hydrocarbon (PAH) exposure with serum uric acid (SUA) or hyperuricemia have been rarely assessed. We aimed to investigate the relationships between urinary PAH metabolites and SUA or hyperuricemia among US adults and to explore the mediating role of systemic inflammation in the associations. A total of 10,307 US adults were conducted to assess the associations of seven urinary hydroxy­PAH with SUA and hyperuricemia and evaluate the role of C-reactive protein (CRP), a biomarker of systemic inflammation, in such associations. Results showed that each 1-unit increase in ln-transformed 2-hydroxynaphthalene (2-OHNa), 1-hydroxyphenanthrene (1-OHPh), 2&3-hydroxyphenanthrene (2&3-OHPh) and total hydroxyphenanthrene (ΣOHPh) was associated with a 1.68 (95% confidence interval (CI): 0.19 to 3.17), 2.46 (0.78 to 4.13), 3.34 (1.59 to 5.09), and 2.99 (1.23 to 4.75) µmol/L increase in SUA, and a 8% (odds ratio (OR): 1.08, 1.02 to 1.15), 9% (OR: 1.09, 1.02 to 1.18), 13% (OR: 1.13, 1.05 to 1.22), and 12% (OR: 1.12, 95% CI: 1.03, 1.21) increase in hyperuricemia, respectively. Co-exposure of seven PAHs was positively associated with SUA and hyperuricemia, with 2&3-OHPh showing the highest weight (components weights: 0.83 and 0.78, respectively). The CRP mediated 11.47% and 10.44% of the associations of ΣOHPh and 2&3-OHPh with SUA and mediated 8.60% and 8.62% in associations of ΣOHPh and 2&3-OHPh with hyperuricemia, respectively. In conclusion, internal levels of PAH metabolites were associated with elevated SUA levels and the increased risk of hyperuricemia among US adults, and CRP played a mediating role in the associations.

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Background: It remains unknown whether composite-dietary-antioxidant-index (CDAI) is associated with the risk of sarcopenia. This study investigated the association of CDAI with sarcopenia risk among general US adults. Methods: A total of 10,093 participants were enrolled in the National Health and Nutrition Examination Surveys (NHANES) from 6 survey cycles (2003-2004, 2005-2006, 2011-2012, 2013-2014, 2015-2016 and 2017-2018). Multivariate logistic regression was carried out to examine the relationship between CDAI and the risk of sarcopenia. Restricted cubic spline (RCS) curves were employed to analyze nonlinear relationships. Results: In a multi-variable logistic regression model adjusting for demographics, lifestyle, economic status and other dietary factors, higher CDAI score was related to a lower risk of sarcopenia among US adults. Compared the highest quartile of CDAI score with the lowest, the OR and 95%CI were 0.49 (0.31-0.75). Furthermore, the RCS demonstrated a linear dose-response relationship between CDAI and sarcopenia (P non-linearity=0.92). These results remained consistent across subgroups stratified by age, sex, physical activity, drinking status, body mass index (BMI), smoking habits, energy intake, and Healthy Eating Index (HEI) score. In addition, the favorable associations of CDAI were primarily attributed to Vitamin E intake. Conclusion: A higher CDAI score was associated with a lower risk of sarcopenia. According to these results, a greater adherence to CDAI may benefit sarcopenia prevention in adults.

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Objectives: The effects of nicotine metabolism on the kidneys of healthy individuals have not been determined. The nicotine metabolite ratio (NMR) indicates the rate of nicotine metabolism and is linked to smoking behaviors and responses to tobacco treatments. We conducted this study in order to investigated the relationship between nicotine metabolite ratio (NMR) and kidney function. Methods: An analysis of cross-sectional data of adults was conducted using a population survey dataset (National Health and Nutrition Examination Survey Data 2013/2018 of the United States). A weighted multivariate regression analysis was conducted to estimate the correlation between NMR and kidney function. Furthermore, we apply fitting smooth curves to make the relationship between NMR and estimated glomerular filtration rate (eGFR) more visualized. Results: The research included a total of 16153 participants. Weighted multivariate regression analyses adjusted for possible variables showed a negative relationship between NMR and estimated glomerular filtration rate (eGFR).The ß (95%CI) of the regression equation between NMR and eGFR was -2.24 (-2.92, -1.55), the trend testing showed consistent results. NMR is positively correlated with urinary albumin creatinine ratio (uACR), but it is not statistically significant. A stratified analysis found a negative correlation between NMR and eGFR in all age, gender and diabetes subgroups, the results were not statistically significant among Mexican Americans and other races. Notably, each unit rise in NMR corresponded to a 4.54 ml/min·1.73m² lower eGFR in diabetic participants and a 6.04 ml/min·1.73m² lower eGFR in those aged 60 and above. Conclusions: Our study shows that nicotine metabolite ratio is negatively associated with kidney function among most adults. It will be necessary to conduct more well-designed prospective clinical trials in order to determine the exact causal interactions between NMR and kidney function. Specific mechanisms also need to be further explored in basic experiments.

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INTRODUCTION: Ureteroscopy has become increasingly chosen as a treatment of choice for patients with kidney stone disease and laser as the energy source for stone lithotripsy is a key part of this. Our aim was to analyse a national database to evaluate the burden of adverse events related to laser fibers and laser machines. METHODS: Search was performed of the Manufacturer User and Facility Device Experience (MAUDE) database in the United States for all events related to holmium laser fibers and holmium laser machines during ureteroscopy between 2012-2021. Information collected included the following: problem, timing, prolonged anaesthesia, early termination of procedure, injury and retained parts. RESULTS: 699 holmium laser fiber events were reported and these had been manufactured by 13 different companies. The commonest problems were breakage outside the patient while in use (26.3%) and breakage of the laser fiber tip (21.2%). Manufacturers concluded root cause to be device failure in 8.9%. 29% of issues occurred before the laser had been activated. 5.2% of cases had to be cancelled as a result of an event. Significantly more injuries were sustained intra-operatively by operating staff compared to patients (6% vs. 0.2%, p < 0.001). All these injuries were superficial burns to the skin with the hand being the most affected body part (88.1%). Zero ocular injuries were reported. Only eight events were related to laser machines and all involved sudden hardware failure but no patient injury. CONCLUSIONS: Laser fibers are fragile. Most adverse events are due to operator error. Direct patient injury from laser fiber is scarce but operating staff should be aware of the risk of sustaining minor burns. Laser machines rarely incur problems and, in this study, did not result in any safety issues beyond need to abort the procedure due to lack of spare equipment.

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BACKGROUND: Opioid use disorder (OUD) research is essential to inform evidence-based responses to the OUD crisis in the United States. Individuals with OUD, their caregivers, and support group leaders are historically difficult to recruit for research studies. The purpose of this study was to describe barriers and facilitators in recruitment during the implementation of a qualitative study that sought to explore stigma, barriers, and facilitators to healthcare. METHOD: Researchers engaged in the original study completed a retrospective reflection of their experience recruiting members of the OUD community. Recruitment data were analyzed thematically, and facilitators and barriers for recruitment were identified. RESULTS: Three key barriers to recruitment were identified: choice of community partners, access to technology, and impractical incentives. One key facilitator to recruitment was identified: being patient yet persistent and flexible. CONCLUSION: Investigators must design research studies mindful of avoiding societal privilege and cognizant of the lens of the individual living with OUD.

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ABSTRACT: The directors of the National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism have proposed new efforts to enable earlier identification and intervention for harmful substance use and its consequences. As editors of The ASAM Principles of Addiction Medicine, we fully support this goal. The word "preaddiction" has been suggested as a diagnostic label to describe individuals who would be targeted for early intervention. In this commentary, we offer that "unhealthy substance use" would be a better descriptor than "preaddiction" and review several potential barriers to be addressed in order to maximize the impact of introducing this new paradigm.

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The global attention on industrial policy's effectiveness spans across various sectors, particularly in international trade where the focus is on enhancing the quality of foreign trade, which is crucial to understand how research hotspots and key issues can synergize. We consider the 2018 "new round" of Sino-US trade friction as an external event and analyze panel data from 2009 to 2022 comprising 1141 Chinese A-share listed enterprises. Our empirical research unequivocally demonstrates that industrial policy has significantly propelled China's foreign trade towards high-quality development by 1.8240%. We conducted rigorous tests for robustness, heterogeneity, and endogeneity. Additionally, our results reveal that inhibitory influences arising from industrial policy on total assets or R&D investment attenuate this promotion effect; There exists a diminishing promotion effect between total assets and R&D investment. Our paper provides valuable insights into understanding their logical relationship while offering guidance for enterprises, markets, and governments in overcoming challenges collectively.

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Objectives. To assess the relationship between doula utilization and health outcomes of females enrolled in Medicaid-affiliated plans in the United States. Methods. In this retrospective, observational cohort study, we used Medicaid claims data from a national health insurer to compare health outcomes between females who used and who did not use a doula (2014-2023). We conducted propensity score matching using a 1:1 case‒control match, without replacement, and fit logistic regressions to analyze the relative risks for maternal health outcomes. Results. The study population included 722 matched pairs with and without a doula. Results indicate females with doulas had a 47% lower risk of cesarean delivery and a 29% lower risk of preterm birth, and were 46% more likely to attend a postpartum checkup (all differences P < .05). Conclusions. Doula care is associated with improved health outcomes among Medicaid enrollees. Public Health Implications. Doulas have garnered increasing interest from policymakers as a strategy to address increasing trends in maternal morbidity and persistent health disparities. This study provides evidence from Medicaid enrollees across the United States that doula care can improve maternal health. (Am J Public Health. 2024;114(11):1275-1285. https://doi.org/10.2105/AJPH.2024.307805).

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Objectives. To assess multilevel factors associated with variation in COVID-19 vaccination rates in a US network of community health centers. Methods. Using multilevel logistic regression with electronic health record data from ADVANCE (Accelerating Data Value Across a National Community Health Center Network; January 1, 2022-December 31, 2022), we assessed associations between health care delivery site-level (n = 1219) and patient-level (n = 1 864 007) characteristics and COVID-19 primary vaccine series uptake. Results. A total of 1 337 440 patients completed the COVID-19 primary vaccine series. Health care delivery site characteristics were significantly associated with lower series completion rates, including being located in non-Medicaid expansion states and isolated or rural communities and serving fewer patients. Patient characteristics associated with significantly lower likelihood of completing the vaccine series included being Black/African American or American Indian/Alaska Native (vs White), younger age, lower income, being uninsured or publicly insured (vs using private insurance), and having fewer visits. Conclusions. Both health care delivery site- and patient-level factors were significantly associated with lower COVID-19 vaccine uptake. Community health centers have been a critical resource for vaccination during the pandemic. (Am J Public Health. 2024;114(11):1242-1251. https://doi.org/10.2105/AJPH.2024.307773).

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Objectives. To estimate the odds of having cognitive difficulties among Middle Eastern and North African (MENA) American adults and compare these odds with those of White, Black, Hispanic/Latino, Asian, American Indian or Alaska Native (AI/AN), and Native Hawaiian/Other Pacific Islander adults nationally and in the 4 states with the largest MENA populations (California, New York, Michigan, and Texas) after adjusting for sociodemographic factors. Methods. We analyzed 2017-2021 American Community Survey data (aged ≥ 45 years; n = 7 284 988), comparing presence of cognitive difficulties by race/ethnicity. Results. MENA adults had greater odds of reporting cognitive difficulties than did White (odds ratio [OR] = 1.49; 95% confidence interval [CI] = 1.42, 1.56), Black (OR = 1.20; 95% CI = 1.14, 1.26), Hispanic (OR = 1.46; 95% CI = 1.39, 1.53), Asian (OR = 1.31; 95% CI = 1.25, 1.38), and AI/AN (OR = 1.07; 95% CI = 1.01, 1.14) adults. In all 4 states, odds of having cognitive difficulties were higher among MENA than Asian adults. Other racial/ethnic comparisons differed by state. Conclusions. A separate checkbox for MENA Americans approved by the Office of Management and Budget is important so health outcomes can be studied in more detail and funds can be allocated for research and resources at state and national levels. (Am J Public Health. 2024;114(11):1265-1274. https://doi.org/10.2105/AJPH.2024.307803).

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BACKGROUND: Digital interventions to improve retention in HIV care are critical to ensure viral suppression and prevent further transmission. AIDS Healthcare Foundation Healthcare Centers are centers across the United States that provide primary HIV care. Traditionally, the Healthcare Centers conduct phone calls with patients to schedule and confirm appointments, as well as share laboratory results. In 2017, Healthvana piloted a digital platform at AIDS Healthcare Foundation Healthcare Centers to send patients SMS text message appointment reminders and allow patients to review their upcoming appointment and view their laboratory results in the web-based patient portal. OBJECTIVE: A national implementation in 15 US states and Washington, DC, of this digital intervention pilot by Healthvana aims to determine whether SMS appointment reminders and web-based patient portal logins improved retention in care compared to traditional methods. METHODS: A retrospective analysis of 40,028 patients living with HIV was conducted at the 61 AIDS Healthcare Foundation Healthcare Centers between January 2, 2017, and May 22, 2018. Patients were invited to enroll in Healthvana's digital intervention pilot, allowing for a natural, organization-wide case-control study. Separate binary logistic regression models evaluated the relationship between receiving SMS appointment reminders and completing scheduled appointments, as well as the relationship between logging into the web-based patient portal and completing scheduled appointments. Four scheduled consecutive appointments for each patient were included in the analysis to account for 1 full year of data per patient. RESULTS: Patients who received the SMS appointment reminder were 1.7 times more likely to complete appointment 1 compared to patients who did not receive the SMS appointment reminder (P<.001). In addition, patients who received the SMS appointment reminder were 1.6 times more likely to complete appointment 2 (P<.001), 1.7 times more likely to complete appointment 3 (P<.001), and 1.8 times more likely to complete appointment 4 (P<.001) compared to patients who did not receive the SMS appointment reminder. Patients who logged in to the web-based patient portal prior to their scheduled appointment were 7.4 times more likely to complete appointment 1 compared to patients who did not log in (P<.001). In addition, patients who logged in to the web-based patient portal prior to their scheduled appointment were 3.6 times more likely to complete appointment 2 (P<.001), 3.2 times more likely to complete appointment 3 (P<.001), and 2.8 times more likely to complete appointment 4 (P<.001) compared to patients who did not log in. CONCLUSIONS: HIV primary care appointment completion was higher when patients engaged with Healthvana's digital platform. Digital technology interventions to ensure patients complete their scheduled HIV care appointments are imperative to curb the HIV epidemic.

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BACKGROUND: Older adults in the USA have worse health and wider socioeconomic inequalities in health compared with those in Britain. Less is known about how health in the two countries compares in mid-life, a time of emerging health decline, including inequalities in health. METHODS: We compare measures of current regular smoking status, obesity, self-rated health, cholesterol, blood pressure and glycated haemoglobin using population-weighted modified Poisson regression in the 1970 British Cohort Study (BCS70) in Britain (N = 9665) and the National Longitudinal Study of Adolescent to Adult Health (Add Health) in the USA (N = 12 300), when cohort members were aged 34-46 and 33-43, respectively. We test whether associations vary by early- and mid-life socioeconomic position. RESULTS: US adults had higher levels of obesity, high blood pressure and high cholesterol. Prevalence of poor self-rated health and current regular smoking was worse in Britain. We found smaller socioeconomic inequalities in mid-life health in Britain compared with the USA. For some outcomes (e.g. smoking), the most socioeconomically advantaged group in the USA was healthier than the equivalent group in Britain. For other outcomes (hypertension and cholesterol), the most advantaged US group fared equal to or worse than the most disadvantaged groups in Britain. CONCLUSIONS: US adults have worse cardiometabolic health than British counterparts, even in early mid-life. The smaller socioeconomic inequalities and better overall health in Britain may reflect differences in access to health care, welfare systems or other environmental risk factors.

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OBJECTIVE: To investigate how individual social determinants of health (SDOH) and cumulative social disadvantage (CSD) affect survival and receipt of liver transplant (LT) in patients with hepatocellular carcinoma (HCC). METHODS: We enrolled 139 adult patients from two Indianapolis hospital systems between June 2019 and April 2022. Structured questionnaires collected SDOH and social risk factor data. We compared SDOH and CSD by race, gender and disease aetiology, assigning one point per adverse SDOH. Multivariable competing risk survival analysis assessed associations between SDOH, CSD, survival and LT receipt. RESULTS: Black patients experienced higher CSD than white patients in the cohort (5.4±2.5 vs 3.2±2.1, p<0.001). Black patients were significantly more likely to have household incomes

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