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Nevin Manimala Statistics

Cervical laminoplasty versus laminectomy and fusion: An umbrella review of postoperative outcomes

Neurosurg Rev. 2023 Dec 8;47(1):5. doi: 10.1007/s10143-023-02239-2.

ABSTRACT

While multiple studies exist comparing cervical laminoplasty (CLP) and posterior cervical laminectomy with fusion (PCF), no clear consensus exists on which intervention is better. An umbrella review helps provide an overall assessment by analyzing a given condition’s multiple interventions and outcomes. It integrates all available information on a topic and allows a consensus to be reached on the intervention of choice. A literature search was conducted using specific search criteria in PubMed, Scopus, and Web of Science databases. Titles and abstracts were screened based on inclusion criteria. A full-text review of articles that passed the initial inclusion criteria was performed. Nine meta-analyses were deemed eligible for the umbrella review. Data was extracted on reported variables from these meta-analyses. Subsequent quality assessment using AMSTAR2 and data analysis using the R package metaumbrella were used to determine the significance of postoperative outcomes. When the meta-analyses were pooled, statistically significant differences between CLP and PCF were found for postoperative overall complications rate and postoperative JOA score. PCF was associated with a lower overall complication rate and a higher postoperative JOA score, both supported by a weak level of evidence (class IV). Data regarding all other outcomes were non-significant. Our umbrella review investigates CLP and PCF by providing a comprehensive overview of existing evidence and evaluating inconsistencies within the literature. This umbrella review revealed that PCF had better outcomes for overall complications rate and postoperative JOA than CLP, but they were classified as being of weak significance.

PMID:38062318 | DOI:10.1007/s10143-023-02239-2

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Nevin Manimala Statistics

The relationship between neural phase entrainment and statistical word-learning: A scoping review

Psychon Bull Rev. 2023 Dec 7. doi: 10.3758/s13423-023-02425-9. Online ahead of print.

ABSTRACT

Statistical language-learning, the capacity to extract regularities from a continuous speech stream, arguably involves the ability to segment the stream before the discrete constituents can be stored in memory. According to recent accounts, the segmentation process is reflected in the alignment of neural activity to the statistical structure embedded in the input. However, the degree to which it can predict the subsequent leaning outcome is currently unclear. As this is a relatively new avenue of research on statistical learning, a scoping review approach was adopted to identify and explore the current body of evidence on the use of neural phase entrainment as a measure of online neural statistical language-learning and its relation to the learning outcome, as well as the design characteristics of these studies. All included studies (11) observed entrainment to the underlying statistical pattern with exposure to the structured speech stream. A significant association between entrainment and learning outcome was observed in six of the studies. We discuss these findings in light of what neural entrainment in statistical word-learning experiments might represent, and speculate that it might reflect a general auditory processing mechanism, rather than segmentation of the speech stream per se. Lastly, as we find the current selection of studies to provide inconclusive evidence for neural entrainment’s role in statistical learning, future research avenues are proposed.

PMID:38062317 | DOI:10.3758/s13423-023-02425-9

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Clinical application of a population-based input function (PBIF) for a shortened dynamic whole-body FDG-PET/CT protocol in patients with metastatic melanoma treated by immunotherapy

EJNMMI Phys. 2023 Dec 8;10(1):79. doi: 10.1186/s40658-023-00601-3.

ABSTRACT

BACKGROUND: The aim was to investigate the feasibility of a shortened dynamic whole-body (dWB) FDG-PET/CT protocol and Patlak imaging using a population-based input function (PBIF), instead of an image-derived input function (IDIF) across the 60-min post-injection period, and study its effect on the FDG influx rate (Ki) quantification in patients with metastatic melanoma (MM) undergoing immunotherapy.

METHODS: Thirty-seven patients were enrolled, including a PBIF modeling group (n = 17) and an independent validation cohort (n = 20) of MM from the ongoing prospective IMMUNOPET2 trial. All dWB-PET data were acquired on Vision 600 PET/CT systems. The PBIF was fitted using a Feng’s 4-compartments model and scaled to the individual IDIF tail’s section within the shortened acquisition time. The area under the curve (AUC) of PBIFs was compared to respective IDIFs AUC within 9 shortened time windows (TW) in terms of linear correlation (R2) and Bland-Altman tests. Ki metrics calculated with PBIF vs IDIF on 8 organs with physiological tracer uptake, 44 tumoral lesions of MM and 11 immune-induced inflammatory sites of pseudo-progression disease were also compared (Mann-Whitney test).

RESULTS: The mean ± SD relative AUC bias was calculated at 0.5 ± 3.8% (R2 = 0.961, AUCPBIF = 1.007 × AUCIDIF). In terms of optimal use in routine practice and statistical results, the 5th-7th pass (R2 = 0.999 for both Ki mean and Ki max) and 5th-8th pass (mean ± SD bias = – 4.9 ± 6.5% for Ki mean and – 4.8% ± 5.6% for Ki max) windows were selected. There was no significant difference in Ki values from PBIF5_7 vs IDIF5_7 for physiological uptakes (p > 0.05) as well as for tumor lesions (mean ± SD Ki IDIF5_7 3.07 ± 3.27 vs Ki PBIF5_7 2.86 ± 2.96 100ml/ml/min, p = 0.586) and for inflammatory sites (mean ± SD Ki IDIF5_7 1.13 ± 0.59 vs Ki PBIF5_7 1.13 ± 0.55 100ml/ml/min, p = 0.98).

CONCLUSION: Our study showed the feasibility of a shortened dWB-PET imaging protocol with a PBIF approach, allowing to reduce acquisition duration from 70 to 20 min with reasonable bias. These findings open perspectives for its clinical use in routine practice such as treatment response assessment in oncology.

PMID:38062278 | DOI:10.1186/s40658-023-00601-3

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The impact of chronic obstructive pulmonary disease on surgical outcomes after surgery for an acute abdominal diagnosis

Eur J Trauma Emerg Surg. 2023 Dec 8. doi: 10.1007/s00068-023-02399-2. Online ahead of print.

ABSTRACT

PURPOSE: The current study was undertaken to describe the independent contribution of chronic obstructive pulmonary disease (COPD) to the risk of postoperative morbidity and in-hospital mortality among patients undergoing surgery for an acute abdominal diagnosis.

METHODS: Patients who underwent emergency abdominal procedures were identified from the electronic database of the Department of Visceral, Transplantation, Thoracic and Vascular Surgery of our institution. To evaluate differences in surgical risk associated with COPD, patients with COPD were matched for age, sex, and type of surgery with an equal number of controls who did not have COPD. Logistic regression was performed to evaluate the univariate and multivariate associations between the independent variables, including COPD and outcome variables.

RESULTS: Between January 2012 and December 2022, 3519 patients undergoing abdominal emergency surgery were identified in our abdominal surgical department. After removing ineligible cases, 201 COPD cases with an equal number of matched controls remained for analysis. The prevalence of COPD after the exclusion of ineligible cases was 5.7%. There were statistically significant differences in the rate of postoperative pulmonary complications (PPCs [57.7% vs. 35.8%; P < 0.001]), ventilator dependence (VD [63.2% vs. 46.3%; P < 0.001]), thromboembolic events (TEEs [22.9% vs. 12.9%; P = 0.009]), and in-hospital mortality (41.3% vs. 30.8%; P = 029) for patients with and without COPD. Independent of other covariates, the presence of COPD was not associated with a significantly increased risk of in-hospital mortality (OR, 1.16; 95% CI 0.70-1.97; P = 0.591) but was associated with an increased risk of PPCs (OR, 2.49; 95% CI 1.41-4.14; P = 0.002) and VD (OR, 2.26; 95% CI 1.22-4.17; P = 0.009).

CONCLUSIONS: Preexisting COPD may alter a patient’s risk of PPCs and VD. However, it was not associated with an increased risk of in-hospital mortality.

PMID:38062271 | DOI:10.1007/s00068-023-02399-2

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Women’s Information Needs and Educational Preferences Regarding Lung Cancer Screening

J Womens Health (Larchmt). 2023 Dec 8. doi: 10.1089/jwh.2023.0429. Online ahead of print.

ABSTRACT

Background: Physicians are less likely to discuss lung cancer screening (LCS) with women, and women have lower awareness of LCS availability. The objective of this qualitative study was to determine information needs, patient-provider communication barriers, and preferences for LCS education among women. Materials and Methods: Eight semistructured qualitative focus groups were conducted with 28 self-identified women meeting LCS eligibility criteria. Participants were recruited through a large health system, from a community-based LCS program, and through a national online database between October 2020 and March 2021. Focus groups were led by a trained moderator via Zoom. Audio recordings were transcribed and analyzed using thematic analysis by investigators. Results: LCS decision-making influences included: (1) Health care provider recommendation; (2) Self-advocacy; (3) Insurance coverage and cost; (4) Family; and (5) Interest in early detection. Participants preferred video and print materials, available at physician’s office or shared by physician, without scare tactics or shaming about smoking, use clear language, with diverse participants and images. Preferred content focused on: (1) Benefits of early detection; (2) Lung cancer definition, statistics, and risk factors; (3) Benefits of quitting smoking; (4) Demonstration or explanation of how LCS is done; and (5) Availability of other tests and potential harms of screening. Conclusion: Women in our study had limited awareness of LCS and their eligibility and wanted recommendation and support for LCS from their health care providers. We identified addressable information needs about lung cancer and the screening process that can be used to improve LCS uptake in women and shared decision-making processes.

PMID:38061051 | DOI:10.1089/jwh.2023.0429

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Organizational Leadership Gender Differences in Medical Schools and Affiliated Universities

J Womens Health (Larchmt). 2023 Dec 8. doi: 10.1089/jwh.2023.0326. Online ahead of print.

ABSTRACT

Objective: To compare gender compositions in the leadership of the top 25 medical schools in North America with the leadership of their affiliated university senior leadership and other faculties. Materials and Methods: This retrospective cross-sectional observational study used publicly available gender data from 2018 to 2019 of universities drawn from the U.S. News Best Global Universities for Clinical Medicine Ranking report. Gender compositions in eight leadership tiers from senior leadership to medical school department directors were analyzed. Data analysis included gender compositions by leadership tier and faculty. Results: Male representation is greater at higher leadership tiers, with the largest imbalance being at the level of medical school department heads. The faculty of medicine has more men in leadership positions than the average of the other faculties (p = 0.02), though similar to schools of engineering, business, dentistry, and pharmacy. Across the eight leadership tiers, a significant trend exists between tier and proportions, indicating that male representation was greater at higher tiers (p < 0.001). No correlation was found between a university’s leadership gender composition and its ranking. Conclusion: The under-representation of women is greater in medical school leadership than the leadership of their affiliated universities. The faculty of medicine has greater male over-representation than the average of the other faculties.

PMID:38061046 | DOI:10.1089/jwh.2023.0326

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Clinical, Sociodemographic, and Neighborhood Characteristics Associated with Adverse Pregnancy Outcomes

J Womens Health (Larchmt). 2023 Dec 8. doi: 10.1089/jwh.2023.0032. Online ahead of print.

ABSTRACT

Background: Cardiovascular risk is increased by a history of adverse pregnancy outcomes (APOs). Efforts to understand and prevent these adverse outcomes may improve both fetal and birthing persons’ outcomes in the peripartum period, and over the patient’s lifetime. This study aims to assess the association of clinical, sociodemographic, and economic neighbor-hood factors with preterm birth (PTB) and APOs (the composite of stillbirth, small for gestation age, and low birthweight). Materials and Methods: This is a cross-sectional study using the electronic medical records of deliveries from seven Northwell Health hospitals between January 1, 2018 and July 31, 2020. There were 62,787 deliveries reviewed in this study. Deliveries that were not the first for the patient during the study period and multiple gestational pregnancies were excluded. Patients with incomplete data on outcome were also excluded. Main outcomes were PTB and composite APOs. Measures included history of PTB, hypertension, diabetes, body mass index, race/ethnicity, age, preferred language, marital status, parity, health insurance, and median income, percent unemployment, and mean household size by zip code. Results: Of the 62,787 deliveries, 43.3% were from white, Non-Hispanic, and Non-Latino patients. There were 4,552 (7.2%) PTBs and 8,634 (13.8%) APOs. Patients enrolled in public insurance had higher odds of PTB (odds ratio [OR] 1.15, 95% CI 1.06-1.24) and APOs (OR 1.19, 95% CI 1.12-1.25). There was a statistically significant association of both PTB (p = 0.037) and APOs (p = 0.005) when comparing patients that live in a zip code with a median income over 100k to those with an income <100k. In addition, living in a zip code within the second quintile of unemployment was associated with lower odds of APOs (OR 0.92, 95% CI 0.84-0.99). Conclusions: Numerous sociodemographic and clinical factors are associated with both PTB and APOs. Tailored programs addressing these disparities may improve outcomes in pregnant persons.

PMID:38061042 | DOI:10.1089/jwh.2023.0032

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Bone turnover change after randomised switch from tenofovir disoproxil to tenofovir alafenamide fumarate in men with HIV

AIDS. 2023 Dec 7. doi: 10.1097/QAD.0000000000003811. Online ahead of print.

ABSTRACT

OBJECTIVE: Bone loss in people with HIV (PWH) is poorly understood. Switching tenofovir disoproxil fumarate (TDF) to tenofovir alafenamide (TAF) has yielded bone mineral density (BMD) increases. PETRAM (NCT#:03405012) investigated whether BMD and bone turnover changes correlate.

DESIGN: Open-label, randomized controlled trial.

SETTING: Single-site, outpatient, secondary care.

PARTICIPANTS: Nonosteoporotic, virologically suppressed, cis-male PWH taking TDF/emtricitabine (FTC)/rilpivirine (RPV) for more than 24 weeks.

INTERVENTION: Continuing TDF/FTC/RPV versus switching to TAF/FTC/RPV (1 : 1 randomization).

MAIN OUTCOME MEASURES: :[18F]NaF-PET/CT for bone turnover (standardized uptake values, SUVmean) and dual-energy x-ray absorptiometry for lumbar spine and total hip BMD.

RESULTS: Thirty-two men, median age 51 years, 76% white, median duration TDF/FTC/RPV 49 months, were randomized between 31 August 2018 and 09 March 2020. Sixteen TAF:11 TDF were analyzed. Baseline-final scan range was 23-103 (median 55) weeks. LS-SUVmean decreased for both groups (TAF -7.9% [95% confidence interval -14.4, -1.5], TDF -5.3% [-12.1,1.5], P = 0.57). TH-SUVmean showed minimal changes (TAF +0.3% [-12.2,12.8], TDF +2.9% [-11.1,16.9], P = 0.77). LS-BMD changes were slightly more favorable with TAF but failed to reach significance (TAF +1.7% [0.3,3.1], TDF -0.3 [-1.8,1.2], P = 0.06). Bone turnover markers decreased more with TAF ([CTX -35.3% [-45.7, -24.9], P1NP -17.6% [-26.2, -8.5]) than TDF (-11.6% [-28.8, +5.6] and -6.9% [-19.2, +5.4] respectively); statistical significance was only observed for CTX (P = 0.02, P1NP, P = 0.17).

CONCLUSION: Contrary to our hypothesis, lumbar spine and total hip regional bone formation (SUVmean) and BMD did not differ postswitch to TAF. However, improved LS-BMD and CTX echo other TAF-switch studies. The lack of difference in SUVmean may be due to inadequate power.

PMID:38061030 | DOI:10.1097/QAD.0000000000003811

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GIS-Based Assessments of Neighborhood Food Environments and Chronic Conditions: An Overview of Methodologies

Annu Rev Public Health. 2023 Dec 7. doi: 10.1146/annurev-publhealth-101322-031206. Online ahead of print.

ABSTRACT

The industrial revolution and urbanization fundamentally restructured populations’ living circumstances, often with poor impacts on health. As an example, unhealthy food establishments may concentrate in some neighborhoods and, mediated by social and commercial drivers, increase local health risks. To understand the connections between neighborhood food environments and public health, researchers often use geographic information systems (GIS) and spatial statistics to analyze place-based evidence, but such tools require careful application and interpretation. In this article, we summarize the factors shaping neighborhood health in relation to local food environments and outline the use of GIS methodologies to assess associations between the two. We provide an overview of available data sources, analytical approaches, and their strengths and weaknesses. We postulate next steps in GIS integration with forecasting, prediction, and simulation measures to frame implications for local health policies. Expected final online publication date for the Annual Review of Public Health, Volume 45 is April 2024. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

PMID:38061019 | DOI:10.1146/annurev-publhealth-101322-031206

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Trends in occupational and work-related contact dermatitis attributed to nickel, chromium and cobalt in the UK: findings from The Health and Occupation Research network 1996-2019

Br J Dermatol. 2023 Dec 7:ljad488. doi: 10.1093/bjd/ljad488. Online ahead of print.

ABSTRACT

BACKGROUND: Occupational exposure to metals such as nickel, chromium and cobalt can be associated with contact dermatitis which can adversely affect the individual’s health, finances and employment. Despite this, little is known about the incidence of metal-related occupational contact dermatitis over prolonged periods of time.

OBJECTIVES: This study aimed to investigate the medically reported trends in the incidence of work-related contact dermatitis attributed to nickel, chromium and cobalt in the UK.

METHODS: Incidence and trends in incidence of cases of occupational contact dermatitis caused by nickel, chromium, or cobalt between 1996 and 2019 (inclusive), reported to the EPIDERM surveillance scheme, was investigated and compared to trends in incidence of occupational contact dermatitis attributed to agents other than the aforesaid metals. A sensitivity analysis restricting the study cohort to cases attributed to only one type of metal was also conducted.

RESULTS: Of all cases reported to EPIDERM during the study period, 2374 cases (12%) were attributed to nickel, chromium, or cobalt. Cases were predominantly females (59%), with a mean (±SD) age (males plus females) of 38 ± 13 years. Cases were most frequently reported in manufacturing, construction and human health and social activities. The most frequently reported occupations were hairdressers, sales and retail assistants/cashiers/check-out operators. The highest annual incidence rate of contact dermatitis was observed in females (2.60 per 100,000 person employed per year), with the first and second peak seen in those aged 16-24 and ≥65 years old, respectively. A statistically significant decrease in the incidence of occupational contact dermatitis attributed to metals over the study period was observed for all occupations (annual average change -6.9% [95% CI -7.8, -5.9]), with much of the decrease occurring between 1996 and 2007. Similar findings were observed in the sensitivity analyses.

CONCLUSIONS: Over a period of 24 years, a statistically significant decline in the incidence of metal-related occupational contact dermatitis was observed in the UK. This could be attributed to improvements in working conditions which resulted in reduced metal exposure but could also be due to closure of industries in the UK that might have generated cases of contact dermatitis due to metal exposure.

PMID:38061005 | DOI:10.1093/bjd/ljad488