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Nevin Manimala Statistics

Effectiveness of an anti-inflammatory diet versus low-fat diet for knee osteoarthritis: the FEAST randomised controlled trial protocol

BMJ Open. 2024 Apr 2;14(4):e079374. doi: 10.1136/bmjopen-2023-079374.

ABSTRACT

INTRODUCTION: Chronic inflammation plays a key role in knee osteoarthritis pathophysiology and increases risk of comorbidities, yet most interventions do not typically target inflammation. Our study will investigate if an anti-inflammatory dietary programme is superior to a standard care low-fat dietary programme for improving knee pain, function and quality-of-life in people with knee osteoarthritis.

METHODS AND ANALYSIS: The eFEct of an Anti-inflammatory diet for knee oSTeoarthritis study is a parallel-group, assessor-blinded, superiority randomised controlled trial. Following baseline assessment, 144 participants aged 45-85 years with symptomatic knee osteoarthritis will be randomly allocated to one of two treatment groups (1:1 ratio). Participants randomised to the anti-inflammatory dietary programme will receive six dietary consultations over 12 weeks (two in-person and four phone/videoconference) and additional educational and behaviour change resources. The consultations and resources emphasise nutrient-dense minimally processed anti-inflammatory foods and discourage proinflammatory processed foods. Participants randomised to the standard care low-fat dietary programme will receive three dietary consultations over 12 weeks (two in-person and one phone/videoconference) consisting of healthy eating advice and education based on the Australian Dietary Guidelines, reflecting usual care in Australia. Adherence will be assessed with 3-day food diaries. Outcomes are assessed at 12 weeks and 6 months. The primary outcome will be change from baseline to 12 weeks in the mean score on four Knee injury and Osteoarthritis Outcome Score (KOOS4) subscales: knee pain, symptoms, function in daily activities and knee-related quality of life. Secondary outcomes include change in individual KOOS subscale scores, patient-perceived improvement, health-related quality of life, body mass and composition using dual-energy X-ray absorptiometry, inflammatory (high-sensitivity C reactive protein, interleukins, tumour necrosis factor-α) and metabolic blood biomarkers (glucose, glycated haemoglobin (HbA1c), insulin, liver function, lipids), lower-limb function and physical activity.

ETHICS AND DISSEMINATION: The study has received ethics approval from La Trobe University Human Ethics Committee. Results will be presented in peer-reviewed journals and at international conferences.

TRIAL REGISTRATION NUMBER: ACTRN12622000440729.

PMID:38569708 | DOI:10.1136/bmjopen-2023-079374

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Estimating the return on investment of the New York Tobacco Control Programme: a synthetic control study

BMJ Open. 2024 Apr 2;14(4):e080525. doi: 10.1136/bmjopen-2023-080525.

ABSTRACT

OBJECTIVE: To assess the return on investment (ROI) of the New York Tobacco Control Programme (NY TCP).

SETTING: New York and other states of the USA.

INTERVENTIONS: NY TCP.

OUTCOMES: Smoking prevalence, smoking-attributable healthcare expenditures (SAEs), smoking-attributable mortality, years of life lost (YLL), the dollar value of YLL and the ROI for healthcare expenditures and mortality.

DESIGN AND METHODS: We used a synthetic control method to estimate the effectiveness of NY TCP funding on smoking prevalence. The synthetic control method created a comparison group that best matched the adult smoking prevalence trend in New York state in the period prior to implementation of the NY TCP and compared smoking prevalence in the state to smoking prevalence in the synthetic control in the period after treatment (2001-2019). The synthetic control group represents what the trend in smoking prevalence in New York would have been had there been no tobacco control expenditures. The ROI was calculated as net savings for each outcome divided by net programme expenditures.

RESULTS: Cumulative savings in SAE in New York from 2001 to 2019 amounted to US$13.2 billion. An estimated 41 771 smoking-attributable deaths (SADs) were averted in New York from 2001 to 2019, and an estimated 672 141 YLL averted as a result of NY TCP funding in the same period. From 2001 to 2019, the ROI for SAE in New York was approximately 14, the economic value ROI of the YLL due to SAD was nearly 145 and the combined ROI was almost 160.

CONCLUSIONS: In this study, we found relatively large ROIs for the NY TCP, which suggests that the programme-which lowers SAE and saves lives-is an efficient use of public funds.

PMID:38569704 | DOI:10.1136/bmjopen-2023-080525

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Head impact differences in blind football between Rio 2016 and Tokyo 2020 Paralympic Games: video-based observational study

BMJ Open. 2024 Apr 2;14(4):e081942. doi: 10.1136/bmjopen-2023-081942.

ABSTRACT

OBJECTIVE: In Tokyo 2020 Paralympic Games, there were the rule and goal size changes at the blind football competition. This study aimed to compare the scoring and head impact characteristics during blind football competition between the Rio 2016 and Tokyo 2020 Paralympic Games using the official videos.

DESIGN: Video-based observational study.

PARTICIPANTS: In total, 36 blind football (men’s football 5-a-side) game videos were obtained from the official International Paralympic Committee.

PRIMARY AND SECONDARY OUTCOME MEASURES: Head impact was defined as the sudden contact of any object with the head. Videos were analysed to assess the number of scores and head impacts along with their corresponding details (ie, round, playing phase, scoring situation, impact situation, occurrence area, impact object, head impact site, fall and foul).

RESULTS: The total number of goals scored at the Tokyo 2020 Paralympic Games was nearly double that at the Rio 2016 Paralympic Games. Regarding head impacts, a total of 2036 cases (Rio 2016, n=1105; Tokyo 2020, n=931) were evaluated. Significant differences were observed in head impact characteristics between the Rio 2016 and Tokyo 2020 Paralympic Games among seven outcomes (round, scoring situation, impact situation, occurrence area, impact object, site of head impact and fall).

CONCLUSIONS: Compared with the Rio 2016 Paralympic Games, the Tokyo 2020 Paralympic Games showed an increase in the number of points scored and different head impact characteristics.

PMID:38569694 | DOI:10.1136/bmjopen-2023-081942

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Association between proton pump inhibitors and risk of hepatic encephalopathy in patients undergoing transjugular intrahepatic portosystemic shunt: a protocol for a systematic review and meta-analysis

BMJ Open. 2024 Apr 2;14(4):e078412. doi: 10.1136/bmjopen-2023-078412.

ABSTRACT

INTRODUCTION: Hepatic encephalopathy (HE) is a major complication of acute liver failure, cirrhosis and transjugular intrahepatic portosystemic shunt (TIPS) placement. Its clinical manifestations range from mild cognitive deficits to coma. Furthermore, HE is a financial burden to a patient’s family and significantly affects the patient’s quality of life. In clinical practice, proton pump inhibitors (PPIs) are widely used for the treatment of HE. The use of PPIs is associated with an increased risk of post-TIPS HE; however, findings on the risk relationship between PPIs and post-TIPS HE are inconsistent. Therefore, a systematic evaluation of the relationship is needed to further provide valid evidence for the rational use of PPIs in patients who undergo TIPS.

METHODS AND ANALYSIS: PubMed, Web of Science, Cochrane Library and Embase will be searched extensively for relevant information. Information from 1 July 2023 to 31 July 2023 in these databases will be included. Primary outcomes will be the use of PPIs and incidence of HE after TIPS; secondary outcomes will be survival, dose dependence and adverse events. This meta-analysis will be reported in accordance with the 50 Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020. The risk of bias, heterogeneity and quality of evidence of the included studies will be evaluated prior to the data analysis. All data will be analysed using Review Manager (V.5.4.1) and Stata (V.17.0) statistical software.

ETHICS AND DISSEMINATION: Ethical approval will not be necessary for this review and meta-analysis. The results of the study will be published in a peer-reviewed journal.

PROSPERO REGISTRATION NUMBER: CRD42022359208.

PMID:38569689 | DOI:10.1136/bmjopen-2023-078412

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Inpatient midwifery staffing levels and postpartum readmissions: a retrospective multicentre longitudinal study

BMJ Open. 2024 Apr 3;14(4):e077710. doi: 10.1136/bmjopen-2023-077710.

ABSTRACT

BACKGROUND: Preventing readmission to hospital after giving birth is a key priority, as rates have been rising along with associated costs. There are many contributing factors to readmission, and some are thought to be preventable. Nurse and midwife understaffing has been linked to deficits in care quality. This study explores the relationship between staffing levels and readmission rates in maternity settings.

METHODS: We conducted a retrospective longitudinal study using routinely collected individual patient data in three maternity services in England from 2015 to 2020. Data on admissions, discharges and case-mix were extracted from hospital administration systems. Staffing and workload were calculated in Hours Per Patient day per shift in the first two 12-hour shifts of the index (birth) admission. Postpartum readmissions and staffing exposures for all birthing admissions were entered into a hierarchical multivariable logistic regression model to estimate the odds of readmission when staffing was below the mean level for the maternity service.

RESULTS: 64 250 maternal admissions resulted in birth and 2903 mothers were readmitted within 30 days of discharge (4.5%). Absolute levels of staffing ranged between 2.3 and 4.1 individuals per midwife in the three services. Below average midwifery staffing was associated with higher rates of postpartum readmissions within 7 days of discharge (adjusted OR (aOR) 1.108, 95% CI 1.003 to 1.223). The effect was smaller and not statistically significant for readmissions within 30 days of discharge (aOR 1.080, 95% CI 0.994 to 1.174). Below average maternity assistant staffing was associated with lower rates of postpartum readmissions (7 days, aOR 0.957, 95% CI 0.867 to 1.057; 30 days aOR 0.965, 95% CI 0.887 to 1.049, both not statistically significant).

CONCLUSION: We found evidence that lower than expected midwifery staffing levels is associated with more postpartum readmissions. The nature of the relationship requires further investigation including examining potential mediating factors and reasons for readmission in maternity populations.

PMID:38569681 | DOI:10.1136/bmjopen-2023-077710

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Descriptive study of causes of death and COVID-19-associated morbidities from the New York City electronic death record: first wave of the pandemic March-July 2020

BMJ Open. 2024 Apr 3;14(4):e072441. doi: 10.1136/bmjopen-2023-072441.

ABSTRACT

OBJECTIVE: Assessing excess deaths from benchmarks across causes of death during the first wave of the COVID-19 pandemic and identifying morbidities most frequently mentioned alongside COVID-19 deaths in the death record.

METHODS: Descriptive study of death records between 11 March 2020 and 27 July 2020, from the New York City Bureau of Vital Statistics. Mortality counts and percentages were compared with the average for the same calendar period of the previous 2 years. Distributions of morbidities from among forty categories of conditions were generated citywide and by sex, race/ethnicity and four age groups. Causes of death were assumed to follow Poisson processes for Z-score construction.

RESULTS: Within the study period, 46 563 all-cause deaths were reported; 132.9% higher than the average for the same period of the previous 2 years (19 989). Of those 46 563 records, 19 789 (42.5%) report COVID-19 as underlying cause of death. COVID-19 was the most prevalent cause across all demographics, with respiratory conditions (prominently pneumonia), hypertension and diabetes frequently mentioned morbidities. Black non-Hispanics had greater proportions of mentions of pneumonia, hypertension, and diabetes. Hispanics had the largest proportion of COVID-19 deaths (52.9%). Non-COVID-19 excess deaths relative to the previous 2-year averages were widely reported.

CONCLUSION: Mortality directly due to COVID-19 was accompanied by significant increases across most other causes from their reference averages, potentially suggesting a sizable COVID-19 death undercount. Indirect effects due to COVID-19 may partially account for some increases, but findings are hardly dispositive. Unavailability of vaccines for the time period precludes any impact over excess deaths. Respiratory and cardiometabolic-related conditions were most frequently reported among COVID-19 deaths across demographic characteristics.

PMID:38569678 | DOI:10.1136/bmjopen-2023-072441

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Willingness of healthcare providers to perform population-based cancer screening: a cross-sectional study in primary healthcare institutions in Tianjin, China

BMJ Open. 2024 Apr 2;14(4):e075604. doi: 10.1136/bmjopen-2023-075604.

ABSTRACT

OBJECTIVE: To evaluate the willingness of healthcare providers to perform population-based screening in primary healthcare institutions in China.

METHODS: Healthcare providers of 262 primary healthcare institutions in Tianjin were invited to fill out a questionnaire consisting of demographic characteristics, workload, and knowledge of, attitude towards and willingness to perform breast, cervical and colorectal cancer screening. Willingness to screen was the primary outcome. Multilevel logistic regression models were conducted to analyse the determinants of healthcare providers’ willingness to screen. ORs and 95% CIs were estimated.

RESULTS: A total of 554 healthcare providers from 244 institutions answered the questionnaire. 67.2%, 72.1% and 74.3% were willing to perform breast, cervical and colorectal cancer screening, respectively. A negative attitude towards screening was associated with a low willingness for cervical (OR=0.27; 95% CI 0.08, 0.94) and colorectal (OR=0.08; 95% CI 0.02, 0.30) cancer screening, while this was not statistically significant for breast cancer screening (OR=0.30; 95% CI 0.08, 1.12). For breast, cervical and colorectal cancer screening, 70.1%, 63.8% and 59.0% of healthcare providers reported a shortage of staff dedicated to screening. A perceived reasonable manpower allocation was a determinant of increased willingness to perform breast (OR=2.86; 95% CI 1.03, 7.88) and colorectal (OR=2.70; 95% CI 1.22, 5.99) cancer screening. However, this was not significant for cervical cancer screening (OR=1.76; 95% CI 0.74, 4.18).

CONCLUSIONS: In China, healthcare providers with a positive attitude towards screening have a stronger willingness to contribute to cancer screening, and therefore healthcare providers’ attitude, recognition of the importance of screening and acceptable workload should be optimised to improve the uptake of cancer screening.

PMID:38569674 | DOI:10.1136/bmjopen-2023-075604

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Efficacy of Landmark-Guided Transverse Abdominis Plane (LTAP) Block in Pediatric Patients Undergoing Laparoscopic Appendectomy

Am Surg. 2024 Apr 3:31348241241711. doi: 10.1177/00031348241241711. Online ahead of print.

ABSTRACT

INTRODUCTION: Optimizing perioperative analgesia in patients undergoing abdominal surgery remains a challenge given the side effects of narcotics and the potential for abuse. While transversus abdominis plane block has been shown to improve clinical outcomes, such as decreased opioid consumption and pain scores among adult patients, there is limited data regarding its efficacy for pediatric patients. This study evaluates efficacy amongst pediatric patients undergoing landmark-guided transversus abdominis plane (LTAP) during laparoscopic appendectomy.

METHODS: A retrospective chart review of patients, ages 0-18 years old, who underwent laparoscopic appendectomy for uncomplicated appendicitis at a single institution from January 2021 to December 2022 was conducted. Pearson’s chi-square test or Fisher’s exact test and Welch’s t test were used to assess differences between the two cohorts for categorical and continuous variables, respectively. Results are statistically significant at P < .05.

RESULTS: Of the 90 patients who met inclusion criteria, 40% (n = 36) underwent LTAP block. Those with LTAP block had a shorter average operative time than those without LTAP block (.6 vs .7 hours; P = .009). Similarly, patients with LTAP block had a shorter average time to discharge (4.1 vs 11.0 h; P = .039). There were no other statistically significant differences in postoperative outcomes including narcotic use between both cohorts.

DISCUSSION: Landmark-guided transversus abdominis plane blocks did not increase operative times yet reduced time to discharge for pediatric patients who underwent laparoscopic appendectomy at our institution. Larger studies are needed to evaluate the relationship between LTAP administration and postoperative narcotic consumption to make clinical recommendations.

PMID:38569662 | DOI:10.1177/00031348241241711

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Under-5 mortality surveillance in low-income and middle-income countries: insights from two Health and Demographic Surveillance Systems in rural Gambia

BMJ Glob Health. 2024 Apr 2;9(4):e014937. doi: 10.1136/bmjgh-2023-014937.

ABSTRACT

Without complete data on under-5 mortality, tracking progress towards achieving Sustainable Development Goal 3.2 will be challenging. Such data are also needed to ensure proper planning and prioritisation of scarce resources in low-income and middle-income countries. However, most low-income and middle-income countries have weak Civil Registration and Vital Statistics (CRVS) systems, leaving a critical gap in understanding under-5 mortality dynamics. This paper outlines a community-based approach to enhance under-5 mortality surveillance in low-income countries, using The Gambia as a case study. The methodology involves Health and Demographic Surveillance Systems (HDSSs) in Basse and Fuladu West, employing unique identification numbers, periodical household visits and collaboration with communities, village reporters and project field workers to ensure comprehensive data collection. Verbal autopsies (VAs) are conducted by trained field workers, and causes of death are determined using the physician-certified VA method. Between 1 September 2019 and 1 September 2023, 1333 deaths were detected, for which causes of death were determined for 97.1% (1294 of 1333). The most common causes of death detected were acute respiratory infections including pneumonia, sepsis, diarrhoeal diseases and birth asphyxia. Challenges include the cost of maintaining the HDSSs, poor road infrastructure, Electronic Data Capture transition challenges, and the need for national integration of HDSS data into the CRVS system. The success of this model highlights its potential for scalable and adaptable under-5 mortality surveillance in resource-limited settings.

PMID:38569661 | DOI:10.1136/bmjgh-2023-014937

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Results and prognosis of kidney transplantation in lupus nephritis: Experience of an Argentine center

Lupus. 2024 Apr 3:9612033241244508. doi: 10.1177/09612033241244508. Online ahead of print.

ABSTRACT

INTRODUCTION: Although RT has improved the survival of the population with ESRD due to all causes, renal outcomes in SLE are controversial. The objective of this study is to describe the characteristics and evolution of the patients and the kidney transplant in LN, and compare it with patients transplanted for other causes.

MATERIALS AND METHODS: Retrospective, observational, analytical, single-center study in which records of patients undergoing nephrotransplantation for LN were analyzed. They were compared with a group of patients transplanted at the same center for other causes of ESRD.

RESULTS: 41 patients with kidney transplant due to SLE and 89 transplanted due to other causes of ESRD were registered. Graft loss occurred in 12 (29.26%) patients with LN and 34 (38.2%) patients in the comparison group (p = .428). Only one case (4.8%) presented reactivation of the LN in the graft, without graft loss. Median graft survival was 73.1 months in the LN group and 66.3 months in the comparison group (p = .221). A total of 8 (19.5%) patients with LN and 11 (12.4%) without LN died (p = .42), with infections being the main cause in both groups. There were no statistically significant differences between groups in graft and patient survival. In a sub-analysis of 28 patients with LN with aPL study, 4 thrombotic events were observed, in 3 different patients, in the aPL-positive group. There were no statistically significant differences in terms of causes of graft loss and graft survival (positive aFL 75.7 months vs negative aFL 72.7 months, p= .96). There were also no differences in mortality between the groups (p = .61).

CONCLUSION: Patients transplanted for LN did not differ from the control population in terms of graft and patient survival. Infections were the main cause of death, so prophylaxis and vaccination continue to be a fundamental pillar in the prevention of infections in immunocompromised patients.

PMID:38569651 | DOI:10.1177/09612033241244508