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Nevin Manimala Statistics

Psychometric properties of the Greek version of the Jefferson Scale of Empathy and empathy levels in Greek dental postgraduate students

Eur Arch Paediatr Dent. 2023 Aug 2. doi: 10.1007/s40368-023-00826-x. Online ahead of print.

ABSTRACT

PURPOSE: The aims of this study were to: (1) examine the psychometric properties of the Greek version of JSE-HP and (2) explore empathy among Greek dental postgraduate students.

METHODS: The JSE-HP scale was translated into Greek using the back translation method. The questionnaire was given to 111 dental postgraduate students between November 2017 and February 2018. A random sample of 25% was retested to assess test-retest reliability. The reliability of the Greek version of JSE-HP was measured with Cronbach’s alpha (α) and Discrimination Indices (DIs). Exploratory Factor Analysis, with varimax rotation of the factorial axes, was used to examine the dimensionality and the factorial validity of the Greek version of the JSE-HP. Comparisons between groups of postgraduate students were performed as appropriate with the Kruskal-Wallis or the Mann-Whitney U test.

RESULTS: The response rate was 100%. The mean age was 28.9 years. The reliability, in the sense of internal consistency of the questionnaire was considered satisfactory (Cronbach’s alpha: 0.76, average DI: 0.33.) The test-retest reliability was satisfactory (Pearson’s r = 0.77, p < 0.001). Factor Analysis revealed 7 significant factors. No statistically significant differences in empathy scores were found among groups of postgraduate students.

CONCLUSIONS: The Greek version of the JSE-HP shows good psychometric properties. Empathy scores do not differ among Greek dental postgraduate students.

PMID:37531023 | DOI:10.1007/s40368-023-00826-x

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Nevin Manimala Statistics

Social-Economic Backgrounds to US County-Based COVID-19 Deaths: PLS-SEM Analysis

J Racial Ethn Health Disparities. 2023 Aug 2. doi: 10.1007/s40615-023-01698-z. Online ahead of print.

ABSTRACT

A complex interplay of social, economic, and environmental factors drove the COVID-19 epidemic. Understanding these factors is crucial in explaining the racial disparities observed in COVID-19 deaths. This research investigated various hypotheses, including ecological, racial, demographic, economic, and political party factors, to determine their impact on COVID-19 deaths. The study utilized data from the National Center for Health Statistics (NCHS), specifically focusing on COVID-19 deaths categorized by race and Hispanic origin in US counties, with over 100 recorded deaths as of July 11, 2022.

METHOD: To analyze the data, the study employed partial least squares (PLS) as the statistical approach, considering the presence of multicollinearity in the county-level socioeconomic data. SmartPLS4 software was utilized to illustrate paths depicting variance and covariance and to conduct significance tests. The analysis encompassed overall COVID-19 deaths and deaths among White, Black, and Hispanic Americans, utilizing the same latent variables and paths.

RESULTS: The results revealed that the number of residents aged 65 years or older in a county was the most influential predictor of COVID-19 deaths, irrespective of race. Economic factors emerged as the second strongest predictors. However, when considering each racial group separately, distinct factors aligned with the five hypotheses emerged as significant contributors to COVID-19 deaths. Furthermore, the diagrams illustrating the relationships between these factors (covariates) varied among racial groups, indicating that the underlying social influences differed across races.

DISCUSSION: In light of these findings, it becomes evident that a “one-size-fits-all” approach to prevention strategies is suboptimal. Instead, targeted prevention efforts tailored to specific racial and social classes at high risk of COVID-19 death could have provided more precise messaging and necessitate direct engagement.

PMID:37531017 | DOI:10.1007/s40615-023-01698-z

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Nevin Manimala Statistics

Evaluation of commercially available point-of-care ultrasound for automated optic nerve sheath measurement

Ultrasound J. 2023 Aug 2;15(1):33. doi: 10.1186/s13089-023-00331-8.

ABSTRACT

BACKGROUND: Measurement of the optic nerve sheath diameter (ONSD) via ultrasonography has been proposed as a non-invasive metric of intracranial pressure that may be employed during in-field patient triage. However, first responders are not typically trained to conduct sonographic exams and/or do not have access to an expensive ultrasound device. Therefore, for successful deployment of ONSD measurement in-field, we believe that first responders must have access to low-cost, portable ultrasound and be assisted by artificial intelligence (AI) systems that can automatically interpret the optic nerve sheath ultrasound scan. We examine the suitability of five commercially available, low-cost, portable ultrasound devices that can be combined with future artificial intelligence algorithms to reduce the training required for and cost of in-field optic nerve sheath diameter measurement. This paper is focused on the quality of the images generated by these low-cost probes. We report results of a clinician preference survey and compare with a lab analysis of three quantitative image quality metrics across devices. We also examine the suitability of the devices in a hypothetical far-forward deployment using operators unskilled in ultrasound, with the assumption of a future onboard AI video interpreter.

RESULTS: We find statistically significant differences in clinician ranking of the devices in the following categories: “Image Quality”, “Ease of Acquisition”, “Software”, and “Overall ONSD”. We show differences in signal-to-noise ratio, generalized contrast-to-noise ratio, point-spread function across the devices. These differences in image quality result in a statistically significant difference in manual ONSD measurement. Finally, we show that sufficiently wide transducers can capture the optic nerve sheath during blind (no visible B-mode) scans performed by operators unskilled in sonography.

CONCLUSIONS: Ultrasound of the optic nerve sheath has the potential to be a convenient, non-invasive, point-of-injury or triage measure for elevated intracranial pressure in cases of traumatic brain injury. When transducer width is sufficient, briefly trained operators may obtain video sequences of the optic nerve sheath without guidance. This data suggest that unskilled operators are able to achieve the images needed for AI interpretation. However, we also show that image quality differences between ultrasound probes may influence manual ONSD measurements.

PMID:37530991 | DOI:10.1186/s13089-023-00331-8

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Nevin Manimala Statistics

External validation of the unifying concept for the quantitative assessment of functional mitral regurgitation

Int J Cardiovasc Imaging. 2023 Aug 2. doi: 10.1007/s10554-023-02920-z. Online ahead of print.

ABSTRACT

PURPOSE: A novel conceptual framework was introduced to enhance the quantitative assessment of functional mitral regurgitation (FMR) and improve risk stratification. However, the data was derived from a single-center cohort and lack external validation. We aimed to validate the proposed algorithm using a different patient population.

METHODS: Patients with at least mild FMR and reduced left ventricular ejection fraction (< 50%) were retrospectively identified at a single-center. The cohort was stratified in low, intermediate and high-risk according to the proposed framework, on the basis of effective regurgitant orifice area (EROA) and regurgitant volume (RegVol). Patients within the intermediate-risk group were subsequently reclassified into either the low-risk category (Regurgitant Fraction, RegFrac < 50%) or the high-risk category (RegFrac ≥ 50%) based on their regurgitant fraction. The primary endpoint was all-cause mortality.

RESULTS: A total of 572 patients were included. During a median follow-up of 3.8 years there were 254 deaths (44%). On multivariable analysis, the proposed thresholds for FMR severity remained independently associated with all-cause mortality (adjusted hazard ratio: 1.488; 95% confidence interval [CI]: 1.110-2.013; p-value = 0.010). This algorithm demonstrated superior discriminative ability (C-statistic: 0.664) compared to contemporary guidelines (C-statistic: 0.522; p-value for comparison < 0.001). Additionally, it resulted in a significant improvement in the net reclassification index (0.162; p-value < 0.001).

CONCLUSIONS: Within our cohort, the application of the proposed concept demonstrated a significant association with a higher risk of all-cause mortality. Moreover, this conceptual framework showcased the potential to improve the accuracy of risk prediction beyond current guidelines.

PMID:37530972 | DOI:10.1007/s10554-023-02920-z

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Nevin Manimala Statistics

The relation of right ventricular outflow tract measurements with in-hospital clinical outcomes after tricuspid valve surgery

Int J Cardiovasc Imaging. 2023 Aug 2. doi: 10.1007/s10554-023-02923-w. Online ahead of print.

ABSTRACT

Right ventricular (RV) function is a determining factor for clinical outcomes in patients undergoing tricuspid valve surgery (TVS). Our aim was to investigate the importance of the function of the right ventricular outflow tract (RVOT), which is an important anatomical region of the RV, in patients underwent TVS. 104 patients who underwent TVS were analyzed retrospectively. Patients with previous cardiac surgery, congenital heart disease, or heart failure were excluded. The parasternal short-axis view at the level of the aortic root was used to measure RVOT dimensions and RVOT fractional shortening (RVOT-FS). The effect of RVOT diameter and function on major adverse cardiac events (MACE) after TVS was investigated. In our study, MACE, consisting of pacemaker implantation, acute kidney injury, postoperative atrial fibrillation and mortality, was developed at 44 (42.3%) patients.We compared the predictive performances of RVOT end-systolic (RVOTs) diameter, RVOT end-diastolic (RVOTd) diameter, RVOT-FS and RV diameters in prediction of MACE. The model including the RVOTs had higher AUC, R2 and likelihood ratio X2 values (0.775, 0.287 and 25.0, respectively) than RVOTd (0.770, 0.279 and 24.2, respectively) and RVOT-FS (0.750, 0.215 and 18.1, respectively). RVOT diameters showed better performance in predicting MACE than RV diameters. Moreover, there was statistically significant association between RVOTs, RVOTd and MACE (p value were 0.014 and 0.027, respectively), while no association between RVOT-FS and MACE (p value was 0.177). In summary, we determined that the RVOT diameters are important predictors for the in-hospital clinical outcomes of patients who underwent TVS.

PMID:37530971 | DOI:10.1007/s10554-023-02923-w

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Nevin Manimala Statistics

Assessing clinical competence: a multitrait-multimethod matrix construct validity study

Adv Health Sci Educ Theory Pract. 2023 Aug 2. doi: 10.1007/s10459-023-10269-0. Online ahead of print.

ABSTRACT

Education in Doctor of Medicine programs has moved towards an emphasis on clinical competency, with entrustable professional activities providing a framework of learning objectives and outcomes to be assessed within the clinical environment. While the identification and structured definition of objectives and outcomes have evolved, many methods employed to assess clerkship students’ clinical skills remain relatively unchanged. There is a paucity of medical education research applying advanced statistical design and analytic techniques to investigate the validity of clinical skills assessment. One robust statistical method, multitrait-multimethod matrix analysis, can be applied to investigate construct validity across multiple assessment instruments and settings. Four traits were operationalized to represent the construct of critical clinical skills (professionalism, data gathering, data synthesis, and data delivery). The traits were assessed using three methods (direct observations by faculty coaches, clinical workplace-based evaluations, and objective structured clinical examination type clinical practice examinations). The four traits and three methods were intercorrelated for the multitrait-multimethod matrix analysis. The results indicated reliability values in the adequate to good range across the three methods with the majority of the validity coefficients demonstrating statistical significance. The clearest evidence for convergent and divergent validity was with the professionalism trait. The correlations on the same method/different traits analyses indicated substantial method effect; particularly on clinical workplace-based assessments. The multitrait-multimethod matrix approach, currently underutilized in medical education, could be employed to explore validity evidence of complex constructs such as clinical skills. These results can inform faculty development programs to improve the reliability and validity of assessments within the clinical environment.

PMID:37530967 | DOI:10.1007/s10459-023-10269-0

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Nevin Manimala Statistics

Comparative effectiveness of verbal instruction versus video-based education (VIVid) among family caregivers for improving the quality of life in advanced head and neck cancer patients receiving palliative care in Eastern India: a randomized controlled trial

Qual Life Res. 2023 Aug 2. doi: 10.1007/s11136-023-03484-0. Online ahead of print.

ABSTRACT

PURPOSE: To determine if video-based educational intervention compared to the standard verbal guidelines, provided to caregivers on home-based palliative care could enhance the quality of life (QoL) in advanced head and neck cancer (HNC) patients.

METHODS: The study employed a prospective, two-arm parallel-group, randomized controlled trial design. Investigators prepared a real-world demonstrational video of ten minutes duration regarding home-based care for family caregivers, with voice-over in Odia language (Eastern India). The contents of the video addressed the management of common problems in palliative care among HNC patients. This study included 180 participants, 90 patient & caregiver dyads randomized to interventional (video-based education) or control (verbal instruction) groups. Patients’ QoL was measured at baseline and 3 weeks follow-up using EORTC QLQ C30. Data were analyzed descriptively, and the Chi-square, Mann-Whitney U, T-test, spearman correlation, and multiple hierarchical regression analyses were employed for statistical analysis, with a significance level of p < 0.05.

RESULTS: Seventy participant dyads completed the planned two assessments: baseline and at the end of 3rd week (Intervention = 37; Control = 33). The intervention group showed a significant improvement in the patient’s health-related QoL, physical, emotional, and social functioning. Symptom burden reduction was observed for pain, nausea, and fatigue. A significant increase in the change in QoL with the video-based education group (VBE) compared to the verbal instruction (VI) group after adjusting for age, gender, physical functioning, and pain symptomology (adjusted R2 = 0.402) was noted.

CONCLUSION: VBE intervention using smart-phone may offer caregivers a viable means of enhancing self-management while improving patients’ QoL within the socio-cultural challenges for home-based palliative care in India. Further research on training caregivers using digital interventions and home-based visits is recommended.

TRIAL REGISTRATION NUMBER: CTRI/2021/06/034473 [Registered on: 30/06/2021].

PMID:37530959 | DOI:10.1007/s11136-023-03484-0

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Nevin Manimala Statistics

When gold standards are not so golden: prevalence bias in randomized trials on endoscopic colorectal cancer screening

Eur J Epidemiol. 2023 Aug 2. doi: 10.1007/s10654-023-01031-2. Online ahead of print.

ABSTRACT

Randomized trials on the effectiveness of screening endoscopy in reducing colorectal cancer (CRC) risk have reported statistically significant, but rather modest reduction of CRC risk by the screening offer. However, risk estimates in these trials included substantial proportions of prevalent CRC cases which were early detected, but could not possibly have been prevented by screening. Thereby, a key principle of randomized prevention trials is violated that only “at risk” persons who do not yet have the disease one aims to prevent should be included in measures of preventive effects. Using recently published data from the Nordic-European Initiative on Colorectal Cancer (NordICC) trial as an example, we illustrate that approaches aimed to account for “prevalence bias” lead to effect estimates that are substantially larger than those reported in the trial and more in line with results from observational studies and real life settings. More rigorous methodological work is needed to develop effective and user-friendly tools to prevent or adjust for prevalence bias in future screening studies.

PMID:37530938 | DOI:10.1007/s10654-023-01031-2

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Nevin Manimala Statistics

Impact of secondary amenorrhea on cardiovascular disease risk in physically active women: a systematic review protocol

JBI Evid Synth. 2023 Aug 2. doi: 10.11124/JBIES-23-00047. Online ahead of print.

ABSTRACT

OBJECTIVE: The objective of this review is to assess the association between secondary amenorrhea in physically active women and cardiovascular disease risk.

INTRODUCTION: It is well established that a woman’s risk of cardiovascular disease greatly increases after menopause. The sharp decline in estrogen is seen as a causal factor. Exercise-induced secondary amenorrhea results in estrogen deficiency, which may lead to dysfunction in estrogen’s cardioprotective pathways. Further, estrogen may be essential in a woman’s endothelial adaptations to exercise. The impact of secondary amenorrhea on cardiovascular disease risk in premenopausal women is not well established.

INCLUSION CRITERIA: This review will consider studies that include physically active women experiencing amenorrhea in any country. Only studies that present evidence of cardiovascular disease, alterations to cardiovascular physiology, or data on cardiovascular risk factors (eg, lipid profile changes) will be considered. The review will consider experimental or observational epidemiological study designs.

METHODS: Searches will be conducted in CINAHL (EBSCOhost), Cochrane Library, Embase (Ovid), MEDLINE (Ovid), SPORTDiscus (EBSCOhost), and Scopus from inception to present with no date or language limitations. Two independent reviewers will screen titles, abstracts, and full texts, appraise methodological quality, and extract data from studies. Where possible, studies will be pooled in a statistical meta-analysis in addition to subgroup analyses. Where pooling is not possible, the findings will be presented in narrative format. Certainty of the evidence will be assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach.

SYSTEMATIC REVIEW REGISTRATION NUMBER: PROSPERO CRD42023360781.

PMID:37529977 | DOI:10.11124/JBIES-23-00047

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Nevin Manimala Statistics

Accuracy of DOTATATE PET imaging in the preoperative planning of small bowel neuroendocrine tumor resection

J Surg Oncol. 2023 Aug 2. doi: 10.1002/jso.27413. Online ahead of print.

ABSTRACT

BACKGROUND AND OBJECTIVES: We assessed the accuracy of preoperative gallium-68 DOTA-Tyr3-octreotate (DOTATATE) positron emission tomography (PET) imaging in estimating multifocality and nodal metastases of small bowel neuroendocrine tumors (sbNETs).

METHODS: A multicenter analysis was performed on patients with sbNETs who underwent preoperative DOTATATE PET imaging and surgical resection, with manual palpation of the entire length of the small bowel, between January 2016 and August 2022. Preoperative imaging reports and blinded secondary imaging reviews were compared to the final postoperative pathology reports. Descriptive statistics were applied.

RESULTS: One-hundred and four patients met inclusion criteria. Pathology showed 53 (51%) patients had multifocal sbNETs and 96 (92%) had nodal metastases. The original preoperative DOTATATE PET imaging identified multifocal sbNET in 28 (27%) patients and lymph node (LN) metastases in 80 (77%) patients. Based on original radiology reports, sensitivity for multifocal sbNET identification was 45%, specificity was 92%, positive predictive value (PPV) was 86%, and negative predictive value (NPV) was 62%. For the identification of LN metastases, sensitivity was 82%, specificity was 88%, PPV was 99%, and NPV was 29%.

CONCLUSIONS: Although DOTATATE PET imaging is specific and relatively accurate, sensitivity and NPV are insufficient to guide surgical planning. Preoperative use should not replace open palpation to identify additional synchronous lesions or to omit regional lymphadenectomy.

PMID:37529970 | DOI:10.1002/jso.27413