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Nevin Manimala Statistics

Development of a qPCR method for classification of botrytized grape berries originated from Tokaj wine region

Food Microbiol. 2024 Oct;123:104582. doi: 10.1016/j.fm.2024.104582. Epub 2024 Jun 5.

ABSTRACT

One of the best-known Hungarian products on world wine market is Aszú, which belongs to the family of Tokaj wine specialties and is made from aszú berries. An important condition for the formation of aszú berries is the noble rot of technologically mature grapes, which is caused by Botrytis cinerea. At the same time botrytized sweet wines are produced not only in Hungary, but in many locations of wine-producing areas of Europe as well as in certain wine growing regions of other continents. The determination of botrytization is mostly based on sensory evaluations, which is a highly subjective procedure and largely depends on the training and experience of the evaluator. Currently, the classification of aszú berries (class I and class II) is based only on visual inspection and determination of sugar content. Based on these facts the primary goal of our work was to develop a qPCR assay capable for objective rating and classification of aszú berries. The developed qPCR is highly specific and sensitive as can clearly distinguish between B. cinerea and other filamentous fungi and yeast species occur on grapes. Moreover, it is suitable for categorizing berries colonized by B. cinerea to varying degrees. Thus, the developed qPCR method can be a useful technique for classification of the grape berries into four quality groups: healthy, semi-shrivelled, Aszú Class II and Aszú Class I.

PMID:39038888 | DOI:10.1016/j.fm.2024.104582

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Nevin Manimala Statistics

Association between diabetes mellitus and total hip arthroplasty outcomes: an observational study using the US National Inpatient Sample

BMJ Open. 2024 Jul 22;14(7):e085400. doi: 10.1136/bmjopen-2024-085400.

ABSTRACT

OBJECTIVES: To investigate the association of diabetes with postoperative outcomes in patients undergoing primary total hip arthroplasty (THA).

DESIGN: Retrospective cohort study using data from the US National Inpatient Sample (NIS).

SETTING: Study cohort was hospitalisations for primary THA in the USA, identified from the 2016-2020 NIS.

PARTICIPANTS: We identified 2 467 215 adults in the 2016-2020 NIS who underwent primary THA using International Classification of Diseases, 10th Revision codes. Primary THA hospitlizations were analysed as the overall group and also stratified by the underlying primary diagnosis for THA.

OUTCOME MEASURES: Outcome measures of interest were the length of hospital stay>the median, total hospital charges>the median, inpatient mortality, non-routine discharge, need for blood transfusion, prosthetic fracture, prosthetic dislocation and postprocedural infection, including periprosthetic joint infection, deep surgical site infection and postprocedural sepsis.

RESULTS: Among 2 467 215 patients who underwent primary THA, the mean age was 68.7 years, 58.3% were female, 85.7% were white, 61.7% had Medicare payer and 20.4% had a Deyo-Charlson index (adjusted to exclude diabetes mellitus) of 2 or higher. 416 850 (17%) patients had diabetes. In multivariable-adjusted logistic regression in the overall cohort, diabetes was associated with higher odds of a longer hospital stay (adjusted OR (aOR) 1.38; 95% CI 1.35 to 1.41), higher total charges (aOR 1.11; 95% CI 1.09 to 1.13), non-routine discharge (aOR 1.18; 95% CI 1.15 to 1.20), the need for blood transfusion (aOR 1.19; 95% CI 1.15 to 1.23), postprocedural infection (aOR 1.62; 95% CI 1.10 to 2.40) and periprosthetic joint infection (aOR 1.91; 95% CI 1.12 to 3.24). We noted a lack of some associations in the avascular necrosis and inflammatory arthritis cohorts (p>0.05).

CONCLUSION: Diabetes was associated with increased healthcare utilisation, blood transfusion and postprocedural infection risk following primary THA. Optimisation of diabetes with preoperative medical management and/or institution of specific postoperative pathways may improve these outcomes. Larger studies are needed in avascular necrosis and inflammatory arthritis cohorts undergoing primary THA.

PMID:39038867 | DOI:10.1136/bmjopen-2024-085400

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Nevin Manimala Statistics

Examining the availability and readiness of health facilities to provide cervical cancer screening services in Nepal: a cross-sectional study using data from the Nepal Health Facility Survey

BMJ Open. 2024 Jul 22;14(7):e077537. doi: 10.1136/bmjopen-2023-077537.

ABSTRACT

OBJECTIVE: We assessed the availability and readiness of health facilities to provide cervical cancer screening services in Nepal.

DESIGN: Cross-sectional study.

SETTING: We used secondary data from a nationally representative 2021 Nepal Health Facility Survey, specifically focusing on the facilities offering cervical cancer screening services.

OUTCOME MEASURES: We defined the readiness of health facilities to provide cervical cancer screening services using the standard WHO service availability and readiness assessment manual.

RESULTS: The overall readiness score was 59.1% (95% CI 55.4% to 62.8%), with more equipment and diagnostic tests available than staff and guidelines. Public hospitals (67.4%, 95% CI 63.0% to 71.7%) had the highest readiness levels. Compared with urban areas, health facilities in rural areas had lower readiness. The Sudurpashchim, Bagmati and Gandaki provinces had higher readiness levels (69.1%, 95% CI 57.7% to 80.5%; 60.1%, 95% CI 53.4% to 66.8%; and 62.5%, 95% CI 56.5% to 68.5%, respectively). Around 17% of facilities had trained providers and specific guidelines to follow while providing cervical cancer screening services. The basic healthcare centres (BHCCs) had lower readiness than private hospitals. Facility types, province and staff management meetings had heterogeneous associations with three conditional quantile scores.

CONCLUSION: The availability of cervical cancer screening services is limited in Nepal, necessitating urgent action to expand coverage. Our findings suggest that efforts should focus on improving the readiness of existing facilities by providing training to healthcare workers and increasing access to guidelines. BHCCs and healthcare facilities in rural areas and Karnali province should be given priority to enhance their readiness.

PMID:39038865 | DOI:10.1136/bmjopen-2023-077537

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Nevin Manimala Statistics

Evaluation of the Friendship Bench’ Circle Kubatana Tose (CKT): an add-on support group intervention – a mixed-methods pilot interventional cohort study protocol

BMJ Open. 2024 Jul 22;14(7):e079842. doi: 10.1136/bmjopen-2023-079842.

ABSTRACT

INTRODUCTION: Mental disorders are endemic. However, the mental health treatment gap remains high, especially in low-resource settings. Task-shifting is a universally recommended strategy to mitigate the care gap. The Friendship Bench (FB), a task-shifting, low-intensity psychotherapy programme founded in Zimbabwe, is effective in managing anxiety and depression. The FB programme offers clients the choice of joining add-on mental health support groups known as Circle Kubatana Tose (CKT). These groups offer an opportunity for continued psychoeducation, social support and economic strengthening. However, the evidence base for the effectiveness of add-on support groups is sparse. We hypothesise that participation in CKT is associated with increased adherence to treatment regimens, social support and well-being. This mixed-methods prospective cohort study seeks to evaluate the intermediate effects (6-month follow-up) of CKT groups, including process outcome evaluation.

METHODS AND ANALYSIS: We will recruit participants (N=178) receiving mental healthcare from the FB in Harare primary care clinics. Follow-up assessments will occur at enrolment, 6 weeks, 3 months and 6 months, assessing changes in common mental disorders (depression and anxiety), social support, positive psychological indices (hope and resilience), health-related quality of life, working alliance, economic outcomes (net income) and implementation outcome (feasibility, acceptability/satisfaction and uptake of services). Quantitative data will be analysed using descriptive analysis, bivariate statistics, Cox proportional hazard models and generalised mixed models (maximum likelihood estimation). Qualitative data will be analysed using thematic analysis.

DISSEMINATION AND ETHICS: Ethical approval was granted by the Medical Research Council of Zimbabwe (MRCZ/A/2427). The findings will inform the potential utility of add-on support groups in the management of anxiety and depression using task-shifting. Dissemination study outcomes will be disseminated in academic journals, social media, conferences and policy briefs.

PMID:39038863 | DOI:10.1136/bmjopen-2023-079842

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Nevin Manimala Statistics

Cross-sectional study of cognitive impairment and visual impairment among the elderly population in residential care in India: the Hyderabad Ocular Morbidity in Elderly Study (HOMES)

BMJ Open. 2024 Jul 22;14(7):e084348. doi: 10.1136/bmjopen-2024-084348.

ABSTRACT

OBJECTIVE: To report the relationship between visual impairment (VI) and cognitive impairment (CI) among the older population living in residential care homes in Hyderabad, India.

STUDY DESIGN: Cross-sectional study.

SETTING: 41 homes for the aged centres in the Hyderabad region.

PARTICIPANTS: 965 participants aged ≥60 years from homes for the aged centres.

PRIMARY OUTCOME MEASURES: Visual impairment and cognitive impairment.

METHODS: The Hindi mini-Mental Status Examination (HMSE) questionnaire was used to assess the cognitive function. The final HMSE score was calculated after excluding vision-dependent tasks (HMSE-VI). A detailed eye examination was conducted, including visual acuity (VA) measurement for distance and near vision, using a standard logarithm of the minimum angle of resolution chart under good illumination. CI was defined as having a HMSE-VI score of ≤17. VI was defined as presenting VA worse than 6/12 in the better-seeing eye. Near VI (NVI) was defined as binocular presenting near vision worse than N8 and distance VA of 6/18 or better in the better-seeing eye. Multiple logistic regression was done to assess the association between VI and CI.

RESULTS: The mean age (±SD) was 74.3 (±8.3) years (range: 60-97 years). There were 612 (63.4%) women, and 593 (61.5%) had a school education. In total, 260 (26.9%; 95% confidence intervals: 24.2 to 29.9) participants had CI. The prevalence of CI among those with VI was 40.5% compared with 14.6% among those without VI (p<0.01). The logistic regression analysis showed that the participants with VI for distance vision had three times higher odds of having CI (OR 3.09; 95% confidence intervals: 2.13 to 4.47; p<0.01). Similarly, participants with NVI had two times higher odds of having CI (OR 2.11; 95% confidence intervals: 1.36 to 3.29; p<0.01) after adjusting for other covariates.

CONCLUSIONS: CI was highly prevalent among those with distance and near VI. VI was independently and positively associated with CI after adjusting for potential confounders. Interventions can be planned to address VI in this vulnerable population which could have a ripple effect in preventing cognitive decline.

PMID:39038860 | DOI:10.1136/bmjopen-2024-084348

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Nevin Manimala Statistics

Association between continuity of care and inappropriate prescribing in outpatient care in Germany: a cross-sectional analysis conducted as part of the LoChro trial

BMJ Open. 2024 Jul 22;14(7):e082245. doi: 10.1136/bmjopen-2023-082245.

ABSTRACT

OBJECTIVES: Potentially inappropriate medications (PIMs) and potential prescribing omissions (PPOs) are common in multimorbid patients. This study aims to describe PIMs and PPOs in an open-access outpatient setting and to investigate any association between continuity of care (CoC) and PIMs and PPOs in multimorbid older patients.

DESIGN: Cross-sectional study using patient-confirmed outpatient medication plans to describe PIMs and PPOs using the ‘Screening Tool of Older Person’s Prescription/Screening Tool to Alert to Right Treatment’ version 2. Four Poisson regressions modelled the number of PIMs and PPOs using context-adapted versions of the Usual Provider of Care (UPC) and the Modified Modified Continuity Index (MMCI) as measures for CoC.

SETTING: Southern Germany, outpatient setting.

PARTICIPANTS: 321 participants of the LoChro-trial at 12-month follow-up (both arms). The LoChro-trial compared healthcare involving an additional care manager with usual care. Inclusion criteria were age over 64, local residence and scoring over one in the Identification of Older patients at Risk Screening Tool.

PRIMARY OUTCOMES: Numbers of PIMs and PPOs.

RESULTS: The mean number of PIMs was 1.5 (SD 1.5), lower than the average number of PPOs at 2.9 (SD 1.7). CoC showed similar results for both indices with a mean of 0.548 (SD 0.279) for MMCI and 0.514 (SD 0.262) for UPC. Both models predicting PPOs indicated more PPOs with higher CoC; statistical significance was only demonstrated for MMCI (MMCI~PPO: Exp(B)=1.42, 95% CI (1.11; 1.81), p=0.004; UPC~PPO: Exp(B)=1.29, 95% CI (0.99; 1.67), p=0.056). No significant association between PIMs and CoC was found (MMCI~PIM: Exp(B)=0.72, 95% CI (0.50; 1.03), p=0.072; UPC~PIM: Exp(B)=0.83, 95% CI (0.57; 1.21), p=0.337).

CONCLUSION: The results did not show a significant association between higher CoC and lesser PIMs. Remarkably, an association between increased CoC, represented through MMCI, and more PPOs was found. Consultation of different care providers in open-access healthcare systems could possibly ameliorate under-prescribing in multimorbid older patients.

TRIAL REGISTRATION: German Clinical Trials Register (DRKS): DRKS00013904.

PMID:39038858 | DOI:10.1136/bmjopen-2023-082245

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Google star ratings of Canadian hospitals: a nationwide cross-sectional analysis

BMJ Open Qual. 2024 Jul 22;13(3):e002713. doi: 10.1136/bmjoq-2023-002713.

ABSTRACT

BACKGROUND: Data on patients’ self-reported hospital experience can help guide quality improvement. Traditional patient survey programmes are resource intensive, and results are not always publicly accessible. Unsolicited online hospital reviews are an alternative data source; however, the nature of online reviews for Canadian hospitals is unknown.

METHODS: We conducted a nationwide cross-sectional study of Canadian acute care hospitals with more than 10 Google Reviews during the 2018-2019 fiscal year. We characterised the volume and distribution of Google Reviews of Canadian hospitals, and assessed their correlation with hospital characteristics (teaching status, size, occupancy rate, length of stay, resource utilisation) and Canadian Patient Experience Survey on Inpatient Care (CPES-IC) scores.

RESULTS: 167 out of 523 (31.9%) acute care hospitals in Canada met the inclusion criteria. Among included hospitals, there was a total of 10 395 Google Reviews and a median of 35 reviews per hospital. The mean Google Star Rating for included hospitals was 2.85 out of 5, with a range of 1.36-4.57. Teaching hospitals had significantly higher mean Google Star Ratings compared with non-teaching hospitals (3.16 vs 2.81, p <0.01). There was a weak, positive correlation between hospitals’ Google Star Ratings and CPES-IC ‘Overall Hospital Experience’ scores (p =0.04), but no significant correlation between Google Star Ratings and other hospital characteristics or subcategories of CPES-IC scores.

INTERPRETATION: There is significant interhospital variation in patients’ self-reported care experiences at Canadian acute care hospitals. Online reviews can serve as a readily accessible source of real-time data for hospitals to monitor and improve the patient experience.

PMID:39038856 | DOI:10.1136/bmjoq-2023-002713

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Nevin Manimala Statistics

Global compositional and functional states of the human gut microbiome in health and disease

Genome Res. 2024 Jul 22. doi: 10.1101/gr.278637.123. Online ahead of print.

ABSTRACT

The human gut microbiota is of increasing interest, with metagenomics a key tool for analyzing bacterial diversity and functionality in health and disease. Despite increasing efforts to expand microbial gene catalogs and an increasing number of metagenome-assembled genomes, there have been few pan-metagenomic association studies and in-depth functional analyses across different geographies and diseases. Here, we explored 6014 human gut metagenome samples across 19 countries and 23 diseases by performing compositional, functional cluster, and integrative analyses. Using interpreted machine learning classification models and statistical methods, we identified Fusobacterium nucleatum and Anaerostipes hadrus with the highest frequencies, enriched and depleted, respectively, across different disease cohorts. Distinct functional distributions were observed in the gut microbiomes of both westernized and nonwesternized populations. These compositional and functional analyses are presented in the open-access Human Gut Microbiome Atlas, allowing for the exploration of the richness, disease, and regional signatures of the gut microbiota across different cohorts.

PMID:39038849 | DOI:10.1101/gr.278637.123

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Nevin Manimala Statistics

Scalable summary statistics-based heritability estimation method with individual genotype level accuracy

Genome Res. 2024 Jul 22:gr.279207.124. doi: 10.1101/gr.279207.124. Online ahead of print.

ABSTRACT

SNP heritability, the proportion of phenotypic variation explained by genotyped SNPs, is an important parameter in understanding the genetic architecture underlying various diseases and traits. Methods that aim to estimate SNP heritability from individual genotype and phenotype data are limited by their ability to scale to Biobank-scale datasets and by the restrictions in access to individual-level data. These limitations have motivated the development of methods that only require summary statistics. While the availability of publicly accessible summary statistics makes them widely applicable, these methods lack the accuracy of methods that utilize individual genotypes. Here we present a SUMmary statistics-based Randomized Haseman-Elston regression (SUM-RHE), a method that can estimate the SNP heritability of complex phenotypes with accuracies comparable to approaches that require individual genotypes, while exclusively relying on summary statistics. SUM-RHE employs Genome-Wide Association Study (GWAS) summary statistics and statistics obtained on a reference population, which can be efficiently estimated and readily shared for public use. Our results demonstrate that SUM-RHE obtains estimates of SNP heritability that are substantially more accurate compared to other summary statistic methods and on par with methods that rely on individual-level data.

PMID:39038848 | DOI:10.1101/gr.279207.124

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Nevin Manimala Statistics

Scotland to ask doctors to reduce prescribing of “low value” drugs

BMJ. 2024 Jul 22;386:q1614. doi: 10.1136/bmj.q1614.

NO ABSTRACT

PMID:39038829 | DOI:10.1136/bmj.q1614