Category: Statistics

J Neurosurg. 2024 Jun 21:1-12. doi: 10.3171/2024.4.JNS232968. Online ahead of print.

ABSTRACT

OBJECTIVE: The onco-functional balance represents the primary goal in neuro-oncology. The increasing use of navigated transcranial magnetic stimulation (nTMS) allows the noninvasive characterization of cortical functional anatomy, and its reliability for motor and language mapping has previously been validated. Calculation and arithmetic processing has not been studied with nTMS so far. In this study, the authors present their preliminary data concerning nTMS calculation.

METHODS: The authors designed a monocentric prospective study, adopting an internal protocol to use nTMS for preoperative planning, including arithmetic processing. When awake surgery was possible, according to the patients’ conditions, nTMS points were used to guide direct cortical stimulation (DCS), i.e., the gold standard for cortical mapping. Navigated TMS-based tractography was used for surgical planning. Statistical analyses on the nTMS and DCS points were performed.

RESULTS: From February 2021 to October 2023, 61 procedures for nTMS calculation mapping were performed. The clinical evaluation, including pre- and postoperative evaluations (3 months after surgery), demonstrated a good clinical outcome with preservation of arithmetic function and recovery (92.8% of patients). Between the awake and asleep surgery groups, the postoperative clinical results were comparable at the 3-month follow-up, with > 90% of the patients achieving improved calculation function. The surgical strategy adopted was aimed at sparing nTMS positive points in asleep procedures, whereas nTMS and DCS positive points were not removed in awake procedures. Overall, 62% of the positive points for calculation functions were exposed by craniotomy and 85% were spared during surgery. None of the patients developed nTMS-related seizures. Diffusion tensor imaging fiber tracking based on nTMS positive points for calculation was used. The white matter fiber tracts involved in calculation functions were the arcuate fasciculus (56%) and frontal aslant tract (22%). When nTMS and DCS points were compared in awake surgery (n = 10 patients), a sensitivity of 31.71%, specificity of 85.76%, positive predictive value of 22.41%, negative predictive value of 90.64%, and accuracy of approximately 69% were achieved.

CONCLUSIONS: Based on the authors’ preliminary data, nTMS can be an advantageous tool to study cognitive functions, aimed at minimizing neurological impairment. The postoperative clinical outcome for patients who underwent operation with nTMS was very good. Considering these results, nTMS has proved to be a feasible method to map cognitive areas including those for calculation functions. Further analyses are needed to validate these data. Finally, other cognitive functions (e.g., visuospatial) may be explored with nTMS.

PMID:38905716 | DOI:10.3171/2024.4.JNS232968

J Osteopath Med. 2024 Jun 24. doi: 10.1515/jom-2024-0001. Online ahead of print.

ABSTRACT

CONTEXT: Anxiety disorders have a far-reaching impact on society, with profound implications on both mental and physical health. In response, there is growing interest in manual therapy modalities, with emerging research suggesting their potential to alleviate related symptoms.

OBJECTIVES: To establish a consensus regarding manual therapy modalities for addressing anxiety symptoms, a systematic review of current literature was conducted.

METHODS: A literature search was conducted between May and August 2023, utilizing a systematic search on both PubMed and Google Scholar, adhering to the defined inclusion criteria. In addition, information was gathered utilizing the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Both authors (KLW and TH) conducted the literature review. The inclusion criteria include articles written in English, peer-reviewed, anxiety conditions documented, and manual therapy delivered by a respectfully qualified professional. Manual therapy modalities include massage therapy, osteopathic manipulative treatment (OMT), foot reflexology, acupressure, manual therapy, healing touch, therapeutic touch, and gentle touch. After initial data collection, both researchers independently screened articles utilizing two metrics: a level of evidence (LOE) table and a screening criterion incorporating unique elements from the search process. The quality of the included articles was assessed utilizing Strength of Recommendation Taxonomy (SORT). When reviewer discrepancies arose, authors reread full-text studies and discussed the inclusion and exclusion criteria to achieve consensus.

RESULTS: The data searches identified 8,979 articles, with 239 articles remaining after duplicates and nonapplicable articles were removed. A total of 42 articles met the inclusion criteria, with only 40 articles able to be obtained for full-article review. After full review and the exclusion of articles with invalid author conclusions, meta-analysis, or systematic reviews, 34 articles were included in the review. All articles received an LOE rating of 2 or better and aligned with our specific screening criteria. Based on SORT, each modality was assigned a “B” rating. Among the included articles, n=27 demonstrated statistical significance in favor of manual therapy modalities as an anxiety treatment. The positive results for the aforementioned manual therapies on anxiety symptom improvement are shown: 15/18 (83 %) massage therapy, 2/6 (33 %) OMT, 5/5 (100 %) foot reflexology, 1/1 (100 %) acupressure, 1/1 (100 %) manual therapy, 0/2 (0 %) healing touch, 1/1 (100 %) therapeutic touch, and 1/1 (100 %) gentle touch.

CONCLUSIONS: A pattern emerged, wherein individuals receiving manual therapy interventions displayed a statistically significant reduction in anxiety intensity. Considering the positive results, manual therapy should be considered an effective strategy for anxiety management.

PMID:38905700 | DOI:10.1515/jom-2024-0001

Phys Rev Lett. 2024 Jun 7;132(23):237401. doi: 10.1103/PhysRevLett.132.237401.

ABSTRACT

Continuous-state network spreading models provide critical numerical and analytic insights into transmission processes in epidemiology, rumor propagation, knowledge dissemination, and many other areas. Most of these models reflect only local features such as adjacency, degree, and transitivity, so can exhibit substantial error in the presence of global correlations typical of empirical networks. Here, we propose mitigating this limitation via a network property ideally suited to capturing spreading. This is the network correlation dimension, which characterizes how the number of nodes within range of a source typically scales with distance. Applying the approach to susceptible-infected-recovered processes leads to a spreading model which, for a wide range of networks and epidemic parameters, can provide more accurate predictions of the early stages of a spreading process than important established models of substantially higher complexity. In addition, the proposed model leads to a basic reproduction number that provides information about the final state not available from popular established models.

PMID:38905697 | DOI:10.1103/PhysRevLett.132.237401

Phys Rev Lett. 2024 Jun 7;132(23):238202. doi: 10.1103/PhysRevLett.132.238202.

ABSTRACT

Absorbing phase transitions (APTs) are widespread in nonequilibrium systems, spanning condensed matter, epidemics, earthquakes, ecology, and chemical reactions. APTs feature an absorbing state in which the system becomes entrapped, along with a transition, either continuous or discontinuous, to an active state. Understanding which physical mechanisms determine the order of these transitions represents a challenging open problem in nonequilibrium statistical mechanics. Here, by numerical simulations and mean-field analysis, we show that a quasi-2D vibrofluidized granular system exhibits a novel form of APT. The absorbing phase is observed in the horizontal dynamics below a critical packing fraction, and can be continuous or discontinuous based on the emergent degree of synchronization in the vertical motion. Our results provide a direct representation of a feasible experimental scenario, showcasing a surprising interplay between dynamic phase transition and synchronization.

PMID:38905681 | DOI:10.1103/PhysRevLett.132.238202

Phys Rev Lett. 2024 Jun 7;132(23):230401. doi: 10.1103/PhysRevLett.132.230401.

ABSTRACT

The combination of optical tweezer arrays with strong interactions-via dipole exchange of molecules and Van der Waals interactions of Rydberg atoms-has opened the door for the exploration of a wide variety of quantum spin models. A next significant step will be the combination of such settings with mobile dopants. This will enable one to simulate the physics believed to underlie many strongly correlated quantum materials. Here, we propose an experimental scheme to realize bosonic t-J models via encoding the local Hilbert space in a set of three internal atomic or molecular states. By engineering antiferromagnetic (AFM) couplings between spins, competition between charge motion and magnetic order similar to that in high-T_{c} cuprates can be realized. Since the ground states of the 2D bosonic AFM t-J model we propose to realize have not been studied extensively before, we start by analyzing the case of two dopants-the simplest instance in which their bosonic statistics plays a role-and compare our results to the fermionic case. We perform large-scale density matrix renormalization group calculations on six-legged cylinders, and find a strong tendency for bosonic holes to form stripes. This demonstrates that bosonic, AFM t-J models may contain similar physics as the collective phases in strongly correlated electrons.

PMID:38905661 | DOI:10.1103/PhysRevLett.132.230401

Phys Rev Lett. 2024 Jun 7;132(23):231003. doi: 10.1103/PhysRevLett.132.231003.

ABSTRACT

In this Letter, we demonstrate how to use the generalized δN formalism, which enables us to compute the evolution of all the large-scale fluctuations, including gravitational waves, solely by solving the evolution of the background homogeneous Universe. Using the Noether charge density, we derive an analytic formula which describes the mapping between the fluctuations at the horizon crossing and the sourced gravitational waves at the end of inflation. This formula can apply also to an inflation model with an anisotropic background. Using this formula, we discuss the condition for the nonvanishing linear polarization and the qualitative difference between single- and multigauge field models.

PMID:38905658 | DOI:10.1103/PhysRevLett.132.231003

Nurs Res. 2024 Jul-Aug 01;73(4):328-336. doi: 10.1097/NNR.0000000000000731. Epub 2024 Apr 13.

ABSTRACT

BACKGROUND: Chinese American immigrants have been underrepresented in health research partly due to challenges in recruitment.

OBJECTIVES: This study aims to describe recruitment and retention strategies and report adherence in a 7-day observational physical activity study of Chinese American immigrants with prior gestational diabetes during the COVID-19 pandemic.

METHODS: Foreign-born Chinese women aged 18-45 years, with a gestational diabetes index pregnancy of 0.5-5 years, who were not pregnant and had no current diabetes diagnosis were recruited. They wore an accelerometer for 7 consecutive days and completed an online survey. Multiple recruitment strategies were used: (a) culturally and linguistically tailored flyers, (b) social media platforms (e.g., WeChat [a popular Chinese platform] and Facebook), (c) near-peer recruitment and snowball sampling, and (d) a study website. Retention strategies included flexible scheduling and accommodation, rapid communications, and incentives. Adherence strategies included a paper diary and/or automated daily text reminders with a daily log for device wearing, daily email reminders for the online survey, close monitoring, and timely problem-solving.

RESULTS: Participants were recruited from 17 states; 108 were enrolled from August 2020 to August 2021. There were 2,479 visits to the study webpage, 194 screening entries, and 149 inquiries about the study. Their mean age was 34.3 years, and the mean length of U.S. stay was 9.2 years. Despite community outreach, participants were mainly recruited from social media (e.g., WeChat). The majority were recruited via near-peer recruitment and snowball sampling. The retention rate was 96.3%; about 99% had valid actigraphy data, and 81.7% wore the device for 7 days. The majority of devices were successfully returned, and the majority completed the online survey on time.

DISCUSSION: We demonstrated the feasibility of recruiting and retaining a geographically diverse sample of Chinese American immigrants with prior gestational diabetes during the COVID-19 pandemic. Recruiting Chinese immigrants via social media (e.g., WeChat) is a viable approach. Nonetheless, more inclusive recruitment strategies are needed to ensure broad representation from diverse socioeconomic groups of immigrants.

PMID:38905624 | DOI:10.1097/NNR.0000000000000731

Nurs Res. 2024 Jul-Aug 01;73(4):320-327. doi: 10.1097/NNR.0000000000000735. Epub 2024 Apr 13.

ABSTRACT

BACKGROUND: Research involvement and engagement is a vital aspect of nursing practice. However, research in dementia care remains limited compared to research focused on finding a cure, presenting a significant gap that specialist dementia nurses (Admiral Nurses) can help bridge by participating in research themselves and facilitating recruitment to research.

OBJECTIVES: This study aimed to assess the research involvement and support needs of Admiral Nurses and identify factors affecting their participation in research. This research is particularly timely as Dementia UK has launched its first research strategy, which necessitates strengthening research capacity within Admiral Nursing.

METHODS: We used a mixed methods convergent parallel synthesis design, simultaneously collecting quantitative and qualitative data. An online survey was conducted in January 2023, targeting current Admiral Nurses across the United Kingdom. The survey included questions addressing demographics, research experience, goals, barriers, facilitators, and support needs. Data analysis involved descriptive statistics, frequencies, univariate analyses, and thematic analysis.

RESULTS: A positive relationship was found between the highest level of academic achievement and current or previous research involvement, as well as interest in becoming involved in research in the future. Although most nurses recognized the importance of research, only half reported current or past research involvement, indicating a need for increased support. A lack of access and opportunities for peer discussion hindered engagement with research findings. Time constraints, lack of support, and low confidence were major barriers to research involvement. Support needs varied but included mentorship, coaching, and the potential for a community of practice for research.

DISCUSSION: This survey of Admiral Nurses sheds light on their research involvement, support needs, and barriers to participation. Recognizing the significance of research while identifying challenges and support requirements is crucial for enhancing research capacity among these specialized nurses. This study contributes valuable insights into the world of specialist dementia nursing and lays the foundation for future strategies to increase research engagement in this field.

PMID:38905623 | DOI:10.1097/NNR.0000000000000735

Nurs Res. 2024 Jul-Aug 01;73(4):278-285. doi: 10.1097/NNR.0000000000000743.

ABSTRACT

BACKGROUND: Hypertension rates have increased worldwide, with the most significant increase in morbidity and mortality observed among African Americans. Resilience is a potential factor influencing how individuals manage health-related challenges or self-management tasks for hypertension. Research is scarce related to resilience and self-management frameworks in African Americans with hypertension.

OBJECTIVES: We aimed to describe a conceptualized resilience framework and preliminary findings of the association among resilience precursors, stress response, hypertension self-management behaviors, and health outcomes in African Americans with hypertension.

METHODS: This cross-sectional, descriptive-correlational study included African American adults with hypertension, aged 25 years and older, recruited from an academic university and surrounding urban communities in the Midwest. Participants completed standardized, validated questionnaires to examine the association among resilience precursors, stress response, hypertension self-management behaviors, health-related quality of life (HRQOL), and blood pressure at baseline. Descriptive statistics were used to describe the sample demographic characteristics, whereas Pearson’s correlational and multiple regression analyses were conducted to determine the associations among the variables.

RESULTS: African Americans with hypertension (N = 30) were included in this preliminary study, with a mean age of 59.17 years; 66.7% were female. The mean systolic blood pressure was 136 (SD = 16.8) mmHg; the mean diastolic blood pressure was 78.1 (SD = 13) mmHg. Pearson’s correlation analysis revealed significant relationships between resilience precursors, stress response, hypertension self-management behaviors and capability, and health outcome components. Multiple regression analysis showed that poor perceived resilience significantly predicted depression. Low dispositional optimism and low perceived resilience were significant predictors of stress. Higher perceived resilience significantly predicted self-efficacy. Perceived stress was negatively and significantly associated with HRQOL. Finally, higher self-efficacy significantly predicted better HRQOL.

DISCUSSION: This study underscores the significant association between resilience, stress, self-management behaviors, and health outcomes in African Americans with hypertension. Further research with larger sample sizes and longitudinal designs is warranted to confirm and expand upon these findings.

PMID:38905621 | DOI:10.1097/NNR.0000000000000743

Rom J Intern Med. 2024 Jun 21. doi: 10.2478/rjim-2024-0022. Online ahead of print.

ABSTRACT

Introduction: Hepatocellular carcinoma (HCC) is a leading global cause of cancer-related deaths. Thermal ablation techniques, especially radiofrequency ablation (RFA) and microwave ablation (MWA), have become pivotal treatments for HCC. This systematic review and meta-analysis aim to compare these modalities, highlighting their efficacy, strengths, and limitations in treating HCC. Methods: A comprehensive literature search was conducted across major databases (PubMed, MEDLINE, Springer, ProQuest, EBSCOhost, Cochrane, and EMBASE) targeting studies on hepatocellular carcinoma with RFA and MWA. Heterogeneity analyses and pooled outcomes using random-effect models with were evaluated to compare both thermal ablation methods. Results: Nine studies, which consists of 368 patients underwent RFA and 387 patients underwent MWA, were included in review. The findings showed no significant differences in pooled analysis of volume of ablation, complete ablation rate, local tumor progression, survival rates, major complications, and adverse events. Subgroup analysis showed significantly higher risk of local tumor progression in RFA in African populations. Conclusion: No statistically significant difference was seen between outcomes across studies. MWA may offer a potential for longer therapeutic response with comparable risk of complications and adverse outcomes.

PMID:38905615 | DOI:10.2478/rjim-2024-0022