Category: Statistics

Medicine (Baltimore). 2023 Feb 17;102(7):e32829. doi: 10.1097/MD.0000000000032829.

ABSTRACT

The use of the Delphi technique is prevalent across health sciences research, and it is used to identify priorities, reach consensus on issues of importance and establish clinical guidelines. Thus, as a form of expert opinion research, it can address fundamental questions present in healthcare. However, there is little guidance on how to conduct them, resulting in heterogenous Delphi studies and methodological confusion. Therefore, the purpose of this review is to introduce the use of the Delphi method, assess the application of the Delphi technique within health sciences research, discuss areas of methodological uncertainty and propose recommendations. Advantages of the use of Delphi include anonymity, controlled feedback, flexibility for the choice of statistical analysis, and the ability to gather participants from geographically diverse areas. Areas of methodological uncertainty worthy of further discussion broadly include experts and data management. For experts, the definition and number of participants remain issues of contention, while there are ongoing difficulties with expert selection and retention. For data management, there are issues with data collection, defining consensus and methods of data analysis, such as percent agreement, central tendency, measures of dispersion, and inferential statistics. Overall, the use of Delphi addresses important issues present in health sciences research, but methodological issues remain. It is likely that the aggregation of future Delphi studies will eventually pave the way for more comprehensive reporting guidelines and subsequent methodological clarity.

PMID:36800594 | DOI:10.1097/MD.0000000000032829

Medicine (Baltimore). 2023 Feb 17;102(7):e32719. doi: 10.1097/MD.0000000000032719.

ABSTRACT

Demoralization syndrome is prevalence among cancer patients in China. However, little research has examined how demoralization syndrome is associated with quality of life (QOL). The aims of this study were to investigate the relationship between mindfulness state, demoralization syndrome and QOL of thyroid cancer patients, and explore the mediating effect of mindfulness on demoralization syndrome and QOL. A correlational cross-sectional study was performed using an online questionnaire. The study was conducted from July to October 2022 among 310 thyroid cancer patients. General information questionnaire, the Demoralization Scale, Five Facet Mindfulness Questionnaire, short form health survey questionnaire were used for investigation. Calculations were performed using SPSS Statistics, version 25. Descriptive statistics, correlation, and process plug-in mediation effect analyses were used to analyze the data. A total of 310 valid questionnaires were finally recovered. The Five Facet Mindfulness Questionnaire score of 310 patients was (120.80 ± 16.57), Demoralization Scale score was (12.49 ± 4.73), short form health survey questionnaire score was (146.15 ± 28.46). Mindfulness played a partial mediating role between demoralization syndrome and QOL of thyroid cancer patients, and the mediating effect accounted for 68.57% of the total effect. Demoralization syndrome can influence QOL through mindfulness state. Measures are needed to increase the QOL of thyroid cancer patients by developing mindfulness programs to decrease their demoralization syndrome.

PMID:36800585 | DOI:10.1097/MD.0000000000032719

Medicine (Baltimore). 2023 Feb 17;102(7):e32958. doi: 10.1097/MD.0000000000032958.

ABSTRACT

To evaluate the utility of 6% hydroxyethyl starch (HES) 130/0.4 in oral cancer surgeries with durations over 6 hours. Using a case-control study design, the investigators enrolled patients who underwent oral cancer surgery involving osteotomy or manipulation near the major blood vessels at the Department of Orofacial Surgery in our hospital between 2017 and 2020. The predictor variable was 6% HES130/0.4. Outcomes included in-out balance and other postoperative parameters pertaining to circulatory maintenance (blood loss, urine volume, infusion volume, blood transfusion volume, albumin dose, hemoglobin levels, blood albumin levels, and doses of vasopressors used to maintain blood pressure), as well as pre- and postoperative renal function, pH, bicarbonate levels, and base excess. Changes in renal function were evaluated by assessing blood urea nitrogen and creatinine levels before surgery and at 1 and 7 days postoperatively. The Mann-Whitney U test was used for between-group comparisons, and Student t test was used for intragroup comparisons. The statistical significance was set at P < .05. A total of 65 patients underwent oral cancer surgery with a duration over 6 hours during the study period. The administration of 6% HES130/0.4 at 22.1 ± 7.5 mL/kg/day did not increase blood loss or the blood transfusion volume. Moreover, patients who were administered 6% HES130/0.4 had a significantly larger mean urine volume and infusion volume than those who were not administered 6% HES130/0.4. The infusion therapy could maintain the urine volume and did not worsen renal function. The results of this study showed that administration of 6% HES130/0.4 at a dose lower than 25 mL/kg in patients undergoing oral cancer surgery over 6 hours was effective for circulation maintenance but did not increase the intraoperative blood loss or transfusion volume. This treatment did not cause any dilutional metabolic acidosis or renal dysfunction.

PMID:36800583 | DOI:10.1097/MD.0000000000032958

Blood. 2023 Feb 17:blood.2022017999. doi: 10.1182/blood.2022017999. Online ahead of print.

ABSTRACT

Allogeneic hematopoietic cell transplantation (HCT) can cure many hematologic diseases, but it carries the potential risks of increased morbidity and mortality rates. Prognostic evaluation is a scientific entity at the core of care for potential recipients of HCT. It improves the decision-making process of transplant versus not and of which transplant strategy and allows for future trials targeting patients’ intolerances to transplant; hence it ultimately improves transplant outcomes. Prognostic models are key for appropriate actuarial outcome estimates, which has been frequently shown to be better than physicians’ subjective estimates. To make the most accurate prognostic evaluation for HCT, one should rely on more than one prognostic model. For relapse and relapse-related mortality risks, the refined disease risk index is currently the most informative model. It can be supplemented by disease-specific models that consider genetic mutations as predictors in addition to information on measurable residual disease. For non-relapse mortality and HCT-related morbidity risks, the HCT-comorbidity index and Karnofsky performance status have proven to be the most reliable and most accepted by physicians. These can be supplemented by gait speed as a measure of frailty. Some other global prognostic models might add additional prognostic information. Physicians’ educated perceptions can then put all this information in context taking into consideration conditioning regimen and donor choices. The future of transplantation mandates 1) clinical investigators specifically trained in prognostication, 2) increased reliance on geriatric assessment, 3) the use of novel biomarkers such as genetic variants, and 4) successfully applying novel statistical methods such as machine-learning.

PMID:36800564 | DOI:10.1182/blood.2022017999

JCO Oncol Pract. 2023 Feb 17:OP2200718. doi: 10.1200/OP.22.00718. Online ahead of print.

ABSTRACT

PURPOSE: We examined colorectal cancer (CRC) screening utilization among non-Hispanic White, non-Hispanic Black (NHB), non-Hispanic other (NHO)/Hispanic cancer survivors. We also determined whether experiencing poor physical and/or mental health affects CRC screening utilization in breast and prostate cancers across different racial/ethnic groups.

METHODS: Data from years 2016, 2018, and 2020 of the Behavioral Risk Factor Surveillance System on 3,023 eligible treatment-utilizing cancer survivors with complete treatment were used. We performed descriptive statistics and multivariable logistic regression to examine the mentioned association.

RESULTS: Among 3,023 eligible survivors, 67.7% of NHO/Hispanic survivors demonstrated lower CRC screening use compared with non-Hispanic White (82%) and NHB (89%) survivors (P < .001). In multivariable analysis, having frequent (14-30 days) poor mental health was associated with lower odds of receiving CRC screening among NHB (odds ratio [OR], 0.32; 95% CI, 0.11 to 0.95) and NHO/Hispanic (OR, 0.39; 95% CI, 0.18 to 0.81) survivors. Similar results in physical health were also found in NHB (OR, 0.34; 95% CI, 0.13 to 0.91) and NHO/Hispanic (OR, 0.22; 95% CI, 0.05 to 0.91) groups. Among those experienced both frequent poor mental and physical health, NHB/NHO/Hispanic were less likely to be screened for CRC (OR, 0.05; 95% CI, 0.02 to 0.10).

CONCLUSION: NHO/Hispanic survivors demonstrated lower CRC screening use. Frequent poor mental and/or physical health was strongly associated with lower CRC screening use among NHB and NHO/Hispanic survivors. Our study suggests that cancer survivorship care considering mental and physical health status may improve adherence to CRC screening recommendation (for secondary cancer prevention) for NHB, NHO, and Hispanic survivors.

PMID:36800561 | DOI:10.1200/OP.22.00718

Clin J Am Soc Nephrol. 2023 Feb 14. doi: 10.2215/CJN.0000000000000123. Online ahead of print.

ABSTRACT

BACKGROUND: As free open access medical education use increases, it is important to characterize how and why learners are using this educational material in nephrology. We describe the frequency, purpose, and type of free open access medical education usage across US nephrology fellows.

METHODS: In this cross-sectional survey, items were emailed to all US adult and pediatric nephrology fellows via the American Society of Nephrology (ASN) Fellow Survey in May 2022. The eight-item survey, developed to measure free open access medical education engagement, had previously undergone instrument validation. Results were analyzed by descriptive statistics.

RESULTS: In total, 43% (359/842) adult nephrology fellows and 51% (45/88) pediatric nephrology fellows completed the survey. 74% (300/404) of fellows reported using free open access medical education, and 72% (215/300) started using free open access medical education within the last 2 years. Of free open access medical education users, 41% (122/300) reported viewing free open access medical education and 33% (99/300) reported applying knowledge gained from these resources daily or weekly. Common purposes for free open access medical education engagement included searching Twitter to learn about others’ opinions in the field (43%; 130/300), reading blogs to answer clinical questions (35%; 105/300), and listening to podcasts for the most up to date information (39%; 116/300). Compared with traditional educational resources, fellows preferred using free open access medical education for staying up to date on nephrology topics (75%) and answering clinical questions (37%). Amongst all fellows, the greatest barriers to free open access medical education use were unfamiliarity with free open access medical education (27%; 111/404), validity concerns (22%; 90/404), and a lack of a local community of free open access medical education users (22%; 87/404).

CONCLUSIONS: 74% of nephrology fellows used free open access medical education resources in a variety of ways, and of these, 33% of fellows clinically applied knowledge gained from these resources. Reasons for engaging with free open access medical education varied across resources.

PMID:36800537 | DOI:10.2215/CJN.0000000000000123

Res Aging. 2023 Feb 17:1640275231157784. doi: 10.1177/01640275231157784. Online ahead of print.

ABSTRACT

Objectives: Studies on the interdependence of couples’ health behaviors and subsequent cognitive outcomes remain limited. Methods: Longitudinal data from the China Health and Retirement Longitudinal Study (2011-2018) were used (N = 1869 heterosexual couples). Latent class analysis identified the dyadic pattern of health behaviors in 2011 (i.e., alcohol consumption, smoking, and physical inactivity). Stratified Cox models examined the association of latent classes with risk of developing memory-related disorders in 2013-2018. Results: Three classes were identified: class 1 (21.25%, only husband smoke, and both active), class 2 (47.55%, both inactive, neither drink nor smoke), and class 3 (31.20%, both drink and smoke, and both active). Couples’ sedentary lifestyle was associated with an increased risk of memory-related disorders among both husbands and wives. Conclusion: Couples were moderately concordant in their physical activity but weakly in smoking and drinking. Couple-based interventions, especially promoting physical activity, may reduce cognitive aging among middle-aged and older Chinese couples.

PMID:36800501 | DOI:10.1177/01640275231157784

J Neurosci Nurs. 2023 Feb 15. doi: 10.1097/JNN.0000000000000700. Online ahead of print.

ABSTRACT

BACKGROUND: Distinguishing features of our stroke network include routine involvement of a telestroke nurse (TSRN) for code stroke activations at nonthrombectomy centers and immediate availability of neuroradiologists for imaging interpretation. On May 1, 2021, we implemented a new workflow for code stroke activations presenting beyond 4.5 hours from last known well that relied on a TSRN supported by a neuroradiologist for initial triage. Patients without a target large vessel occlusion (LVO) were managed without routine involvement of a teleneurologist, which represented a change from the preimplementation period. METHODS: We collected data 6 months before and after implementation of the new workflow. We compared preimplementation process metrics for patients managed with teleneurologist involvement with the postimplementation patients managed without teleneurologist involvement. RESULTS: With the new workflow, teleneurologist involvement decreased from 95% (n = 953) for patients presenting beyond 4.5 hours from last known well to 37% (n = 373; P < .001). Compared with patients in the preimplementation period, postimplementation patients without teleneurologist involvement experienced less inpatient hospital admission and observation (87% vs 90%; unadjusted P = .038, adjusted P = .06). Among the preimplementation and postimplementation admitted patients, there was no statistically significant difference in follow-up neurology consultation or nonstroke diagnoses. A similar percentage of LVO patients were transferred to the thrombectomy center (54% pre vs 49% post, P = .612), whereas more LVO transfers in the postimplementation cohort received thrombectomy therapy (75% post vs 39% pre, P = .014). Among LVO patients (48 pre and 41 post), no statistical significance was observed in imaging and management times. CONCLUSION: Our work shows the successful teaming of a TSRN and a neuroradiologist to triage acute stroke patients who present beyond an eligibility window for systemic thrombolysis, without negatively impacting care and process metrics. This innovative partnering may help to preserve the availability of teleneurologists by limiting their involvement when diagnostic imaging drives decision making.

PMID:36800500 | DOI:10.1097/JNN.0000000000000700

Phys Rev Lett. 2023 Feb 3;130(5):051802. doi: 10.1103/PhysRevLett.130.051802.

ABSTRACT

The inclusive electron neutrino charged-current cross section is measured in the NOvA near detector using 8.02×10^{20} protons-on-target in the NuMI beam. The sample of GeV electron neutrino interactions is the largest analyzed to date and is limited by ≃17% systematic rather than the ≃7.4% statistical uncertainties. The double-differential cross section in final-state electron energy and angle is presented for the first time, together with the single-differential dependence on Q^{2} (squared four-momentum transfer) and energy, in the range 1 GeV≤E_{ν}<6 GeV. Detailed comparisons are made to the predictions of the GENIE, GiBUU, NEUT, and NuWro neutrino event generators. The data do not strongly favor a model over the others consistently across all three cross sections measured, though some models have especially good or poor agreement in the single differential cross section vs Q^{2}.

PMID:36800478 | DOI:10.1103/PhysRevLett.130.051802

Phys Rev Lett. 2023 Feb 3;130(5):053601. doi: 10.1103/PhysRevLett.130.053601.

ABSTRACT

In this Letter, we show how to efficiently generate entanglement between two artificial giant atoms with photon-mediated interactions in a waveguide. Taking advantage of the adjustable decay processes of giant atoms into the waveguide and of the interference processes, spontaneous sudden birth of entanglement can be strongly enhanced with giant atoms. Highly entangled states can also be generated in the steady-state regime when the system is driven by a resonant classical field. We show that the statistics of the light emitted by the system can be used as a witness of the presence of entanglement in the system, since giant photon bunching is observed close to the regime of maximal entanglement. Given the degree of quantum correlations incoherently generated in this system, our results open a broad avenue for the generation of quantum correlations and manipulation of photon statistics in systems of giant atoms.

PMID:36800463 | DOI:10.1103/PhysRevLett.130.053601