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Nevin Manimala Statistics

TRIPOD+AI statement: updated guidance for reporting clinical prediction models that use regression or machine learning methods

BMJ. 2024 Apr 16;385:e078378. doi: 10.1136/bmj-2023-078378.

NO ABSTRACT

PMID:38626948 | DOI:10.1136/bmj-2023-078378

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Improving appropriate use of intravenous albumin: results of a single-centre audit and multifaceted intervention

BMJ Open Qual. 2024 Apr 15;13(2):e002534. doi: 10.1136/bmjoq-2023-002534.

ABSTRACT

BACKGROUND: Intravenous albumin has limited indications supported by randomised controlled trials, yet it is often prescribed for indications not supported by evidence.

AIM: To reduce unnecessary transfusion of albumin.

INTERVENTIONS: Under the leadership of a multidisciplinary quality improvement team, evidence-based recommendations were disseminated in tandem with a new electronic order set, an educational strategy, qualitative interviews with prescribers and a return policy change to reduce wastage.

IMPLEMENTATION AND EVALUATION: Interventions were introduced in a staggered fashion. The primary outcome, appropriate use of albumin, was monitored and quantified using pre-intervention and post-intervention audits. Process measures included statistical process run charts of monthly usage of 5% and 25% albumin and wastage. Data on length of stay (hospital and intensive care), new inpatient starts on kidney replacement and mortality were collected as balancing measures.

RESULTS: Appropriate albumin usage based on indication increased from 30% to 50% (p<0.0001). There was significantly less overall albumin usage in the post-intervention period compared with the pre-intervention period (negative coefficient, p<0.0001), driven by a major reduction in the utilisation of the 5% formulation (p<0.0001). Overall albumin usage was significantly lower in the post-intervention period, decreasing from 800 to 450 vials per month. The intervention resulted in significantly less wastage (negative coefficient, p=0.017). Mortality, length of stay and new starts on kidney replacement therapy remained constant throughout the study period.

CONCLUSION: Improved prescribing of albumin was achieved with a multifaceted approach. Substantial and sustained reductions in usage were achieved without negatively impacting patient-important outcomes. The estimated annual savings for the purchase cost of albumin was CAN $300 000. We provide a structured process for other organisations to optimise their use of albumin.

PMID:38626937 | DOI:10.1136/bmjoq-2023-002534

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Nevin Manimala Statistics

Inter-subject correlation of electroencephalographic and behavioural responses reflects time-varying engagement with natural music

Eur J Neurosci. 2024 Apr 16. doi: 10.1111/ejn.16324. Online ahead of print.

ABSTRACT

Musical engagement can be conceptualized through various activities, modes of listening and listener states. Recent research has reported that a state of focused engagement can be indexed by the inter-subject correlation (ISC) of audience responses to a shared naturalistic stimulus. While statistically significant ISC has been reported during music listening, we lack insight into the temporal dynamics of engagement over the course of musical works-such as those composed in the Western classical style-which involve the formulation of expectations that are realized or derailed at subsequent points of arrival. Here, we use the ISC of electroencephalographic (EEG) and continuous behavioural (CB) responses to investigate the time-varying dynamics of engagement with functional tonal music. From a sample of adult musicians who listened to a complete cello concerto movement, we found that ISC varied throughout the excerpt for both measures. In particular, significant EEG ISC was observed during periods of musical tension that built to climactic highpoints, while significant CB ISC corresponded more to declarative entrances and points of arrival. Moreover, we found that a control stimulus retaining envelope characteristics of the intact music, but little other temporal structure, also elicited significantly correlated EEG and CB responses, though to lesser extents than the original version. In sum, these findings shed light on the temporal dynamics of engagement during music listening and clarify specific aspects of musical engagement that may be indexed by each measure.

PMID:38626924 | DOI:10.1111/ejn.16324

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Nevin Manimala Statistics

Therapy combining glucagon-like peptide-1 receptor agonist with sodium-glucose cotransporter 2 inhibitor suppresses atherosclerosis in diabetic ApoE-deficient mice

Exp Clin Endocrinol Diabetes. 2024 Apr 16. doi: 10.1055/a-2307-8036. Online ahead of print.

ABSTRACT

Background Glucagon-like peptide-1 receptor agonists (GLP-1RAs) and sodium-glucose cotransporter 2 inhibitors (SGLT2i) have beneficial effects on cardiovascular disease in addition to their glucose-lowering effects. We directly compared the effects of these drugs when used individually or in combination on cardiovascular atherosclerotic lesion development using diabetic ApoE-deficient hyperlipidemic mice. Methods We treated ApoE-deficient mice with streptozotocin and nicotinamide, generating a type 2 diabetes model. The mice were randomly divided into four groups: vehicle-treated (Untreated), liraglutide (LIRA), ipragliflozin (IPRA), and combination therapy (Combo). These mice as well as non-diabetic controls were fed a high-fat diet. After 8 weeks of drug administration, the heart and aorta were removed and analyzed. Results Atherosclerotic lesions evaluated by oil red O (ORO) staining were significantly larger in the Untreated group (13.4 ± 0.8% of total aortic area) than in the non-diabetic controls (4.4 ± 0.5%, p < 0.01), while being reduced in the Combo (6.0 ± 1.0%, p < 0.01) as compared with the Untreated group. The ORO stain-positive area in the LIRA and IPRA groups tended to be reduced but their differences failed to reach statistical significance. Transcript levels of Mcp1 and Sirt1 were significantly reduced and increased, respectively, in the Combo as compared with the Untreated group, while no significant changes were observed in the monotherapy groups. Conclusions Our data suggest that combination therapy with liraglutide and ipragliflozin may be an efficient regimen for preventing the development of atherosclerosis in diabetic ApoE-deficient mice.

PMID:38626913 | DOI:10.1055/a-2307-8036

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Nevin Manimala Statistics

Partial versus Complete Sternotomy for Aortic Valve Replacement-Multicenter Study

Thorac Cardiovasc Surg. 2024 Apr 16. doi: 10.1055/s-0044-1782685. Online ahead of print.

ABSTRACT

BACKGROUND: The benefits of minimally invasive techniques in cardiac surgery remain poorly defined. We evaluated the short- and mid-term outcomes after surgical aortic valve replacement through partial upper versus complete median sternotomy (MS) in a large, German multicenter cohort.

METHODS: A total of 2,929 patients underwent isolated surgical aortic valve replacement via partial upper sternotomy (PUS, n = 1,764) or MS (n = 1,165) at nine participating heart centers between 2016 and 2020. After propensity-score matching, 1,990 patients were eligible for analysis. The primary end point was major adverse cardiac and cerebrovascular events (MACCE), a composite of death, myocardial infarction, and stroke at 30 days and in follow-up, up to 5 years. Secondary end points were acute kidney injury, length of hospital stay, transfusions, deep sternal wound infection, Dressler’s syndrome, rehospitalization, and conversion to sternotomy.

RESULTS: Unadjusted MACCE rates were significantly lower in the PUS group both at 30 days (p = 0.02) and in 5-year follow-up (p = 0.01). However, after propensity-score matching, differences between the groups were no more statistically significant: MACCE rates were 3.9% (PUS) versus 5.4% (MS, p = 0.14) at 30 days, and 9.9 versus 11.3% in 5-year follow-up (p = 0.36). In the minimally invasive group, length of intensive care unit (ICU) stay was shorter (p = 0.03), Dressler’s syndrome occurred less frequently (p = 0.006), and the rate of rehospitalization was reduced significantly (p < 0.001). There were 3.8% conversions to full sternotomy.

CONCLUSION: In a large, German multicenter cohort, MACCE rates were comparable in surgical aortic valve replacement through partial upper and complete sternotomies. Shorter ICU stay and lower rates of Dressler’s syndrome and rehospitalization were in favor of the partial sternotomy group.

PMID:38626902 | DOI:10.1055/s-0044-1782685

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Nevin Manimala Statistics

From classroom to life: Gender differences in the persistent effect of learning disabilities on adult depressive symptoms

Soc Sci Med. 2024 Apr 15;349:116886. doi: 10.1016/j.socscimed.2024.116886. Online ahead of print.

ABSTRACT

Despite the well-established link between adolescent learning disabilities (LD) and mental health, little is known about its long-term consequences. This study examines the relationship between adolescent LD and adult depressive symptoms, with a focus on gender differences and underlying mechanisms. Using a sibling sample from the National Longitudinal Study of Adolescent to Adult Health (N = 3,414), this study estimated sibling fixed effects models to account for unobserved family-level characteristics such as genes and early childhood family and social context. Sobel mediation analyses were conducted to examine social-psychological mechanisms, including the student-teacher relationship, the student-student relationship, and a sense of school belonging. LD in adolescence was positively associated with depressive symptoms in adulthood (b = 0.823, p < 0.05). This association remained robust when controlling for unobserved family-level confounders as well as educational attainment in adulthood. Gender-stratified models showed that only the association for women is statistically significant (b = 1.935, p < 0.05), and its magnitude is nearly three times that of the association for men. Sobel mediation tests indicate that a decline in a sense of school belonging mediates approximately 17% of the association between adolescent LD and adult depressive symptoms. This study’s findings suggest that LD in adolescence is associated with an increase in depressive symptoms in adulthood, particularly in women, and a low sense of school belonging may be a potential mediator. Implementing interventions to improve the school integration of girls with LD could be an effective means of improving their long-term mental health.

PMID:38626503 | DOI:10.1016/j.socscimed.2024.116886

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Nevin Manimala Statistics

An online intervention to improve oncology health professional self-efficacy in communicating with carers: Hybrid effectiveness-implementation evaluation of the eTRIO program

Patient Educ Couns. 2024 Mar 16;124:108251. doi: 10.1016/j.pec.2024.108251. Online ahead of print.

ABSTRACT

OBJECTIVES: Many oncology health professionals (HPs) report communicating with carers as complex; and receive limited carer-relevant training. We developed an online HP education program for supporting and managing carer involvement (eTRIO). We aimed to assess whether HPs’ self-efficacy in carer communication, knowledge, and decision-making preferences improve following eTRIO. Satisfaction and implementation potential were assessed.

METHODS: This type 1 hybrid effectiveness-implementation study used a pre-post single arm intervention design. HPs completed baseline measures, the eTRIO online module, and measures at 1- and 12-weeks post-intervention. Measures included: self-efficacy in carer communication (13-items), applied knowledge (7-items), preference for carer involvement in decisions (1-item). Fifteen of participants completed feedback interviews which underwent thematic analysis. User analytics were collected and analysed.

RESULTS: Fifty-six HPs completed baseline measures, 42 completed post- and follow-up measures. At baseline mean self-efficacy score was 88. HPs showed a statistically significant increase in self-efficacy post-intervention (mean = 105.8, CI [12.99, 20.47]), maintained at 12-weeks (mean = 101.1, CI [8.00, 15.72]). There were no changes in knowledge or decision-making preferences. Program engagement and satisfaction were high, 86.7% participants rated eTRIO as very/extremely helpful.

CONCLUSIONS AND PRACTICE IMPLICATIONS: eTRIO provided HPs with confidence to effectively engage with carers and manage complex situations such as family dominance. These gains are noteworthy, as conflict with families/carers contributes to HP burnout.

PMID:38626502 | DOI:10.1016/j.pec.2024.108251

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Nevin Manimala Statistics

Dietary intake changes the associations between long-term exposure to fine particulate matter and the surrogate indicators of insulin resistance

Environ Int. 2024 Apr 10;186:108626. doi: 10.1016/j.envint.2024.108626. Online ahead of print.

ABSTRACT

The relationship of fine particulate matter (PM2.5) exposure and insulin resistance remains inclusive. Our study aimed to investigate this association in the project of Prediction for Atherosclerotic Cardiovascular Disease Risk in China (China-PAR). Specifically, we examined the associations between long-term PM2.5 exposure and three surrogate indicators of insulin resistance: the triglyceride-glucose index (TyG), TyG with waist circumference (TyG-WC) and metabolic score for insulin resistance (METS-IR). Additionally, we explored potential effect modification of dietary intake and components. Generalized estimating equations were used to evaluate the associations between PM2.5 and the indicators with an unbalanced repeated measurement design. Our analysis incorporated a total of 162,060 observations from 99,329 participants. Each 10 μg/m3 increment of PM2.5 was associated with an increase of 0.22 % [95 % confidence interval (CI): 0.20 %, 0.25 %], 1.60 % (95 % CI: 1.53 %, 1.67 %), and 2.05 % (95 % CI: 1.96 %, 2.14 %) in TyG, TyG-WC, and METS-IR, respectively. These associations were attenuated among participants with a healthy diet, particularly those with sufficient intake of fruit and vegetable, fish or tea (pinteraction < 0.0028). For instance, among participants with a healthy diet, TyG increased by 0.11 % (95 % CI: 0.08 %, 0.15 %) per 10 μg/m3 PM2.5 increment, significantly lower than the association observed in those with an unhealthy diet. The findings of this study emphasize the potential of a healthy diet to mitigate these associations, highlighting the urgency for improving air quality and implementing dietary interventions among susceptible populations in China.

PMID:38626493 | DOI:10.1016/j.envint.2024.108626

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Prediction of postoperative cerebral infarction after combined bypass surgery in adult moyamoya disease: combining quantitative parameters on RAPID perfusion CT with clinically related factors

J Neurosurg. 2024 Apr 19:1-9. doi: 10.3171/2024.1.JNS232641. Online ahead of print.

ABSTRACT

OBJECTIVE: The aim of this study was to identify predictive factors of postoperative cerebral infarction (PostCI) following combined bypass (CB) surgery in adult patients with moyamoya disease (MMD) using quantitative parameters from the rapid processing of perfusion and diffusion (RAPID) perfusion CT (PCT) software.

METHODS: The authors retrospectively reviewed 276 total hemispheres in patients with MMD who underwent CB. Preoperative volumes of time-to-maximum (Tmax) > 4 sec and > 6 sec were obtained from the RAPID analysis of PCT. These quantitative parameters, along with other clinical and angiographic factors, were statistically analyzed to determine the significant predictors for PostCI following CB.

RESULTS: PostCI occurred in 17 hemispheres (6.16%). PCA involvement (p = 0.016), and the volume of Tmax > 6 sec (p < 0.001) and Tmax > 4 sec (p < 0.001), were identified as variables related to PostCI in the univariable analysis. In the multivariable analysis, the volume of Tmax > 6 sec (OR 1.013, 95% confidence interval 1.007-1.019, p < 0.001) was determined to be an independent predictive factor significantly associated with PostCI after CB in adult patients with MMD. In the receiver operating characteristic (ROC) curve, the cutoff value of the preoperative volume of Tmax > 6 sec was determined to be 59.5 ml (sensitivity 82.4%, specificity 71.9%, area under the ROC curve 0.811).

CONCLUSIONS: For adult patients with MMD and a large volume of Tmax > 6 sec over 59.5 ml, more caution is required when deciding to undergo bypass surgery and in postoperative management.

PMID:38626473 | DOI:10.3171/2024.1.JNS232641

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Nevin Manimala Statistics

Toward Modeling the Structure of Electrolytes at Charged Mineral Interfaces Using Classical Density Functional Theory

J Phys Chem B. 2024 Apr 16. doi: 10.1021/acs.jpcb.3c08045. Online ahead of print.

ABSTRACT

The organization of water molecules and ions between charged mineral surfaces determines the stability of colloidal suspensions and the strength of phase-separated particulate gels. In this article, we assemble a density functional that measures the free energy due to the interaction of water molecules and ions in electric double layers. The model accounts for the finite size of the particles using fundamental measure theory, hydrogen-bonding between water molecules using Wertheim’s statistical association theory, long-range dispersion interactions using Barker and Henderson’s high-temperature expansion, electrostatic correlations using a functionalized mean-spherical approximation, and Coulomb forces through the Poisson equation. These contributions are shown to produce highly correlated structures, aptly rendering the layering of counterions and co-ions at highly charged surfaces and permitting the solvation of ions and surfaces to be measured by a combination of short-range associations and long-ranged attractions. The model is tested in a planar geometry near soft, charged surfaces to reproduce the structure of water near graphene and mica. For mica surfaces, explicitly representing the density of the outer oxygen layer of the exposed silica tetrahedra allows water molecules to hydrogen-bond to the solid. When electrostatic interactions are included, water molecules assume a hybrid character, being accounted for implicitly in the dielectric constant but explicitly otherwise. The disjoining pressure between approaching like-charged surfaces is calculated, demonstrating the model’s ability to probe pressure oscillations that arise during the expulsion of ions and water layers from the interfacial gap and predict strong interattractive stresses that form at narrow interfacial spacing when the surface charge is overscreened. This interattractive stress arises not due to in-plane correlations under strong electrostatic coupling but due to the out-of-plane structuring of associating ions and water molecules.

PMID:38626457 | DOI:10.1021/acs.jpcb.3c08045