Review article: Education for Transformation

Review articleEducation for transformation Four events on educational responses to neoliberalism and colonialism: World Education Forum, Palestine, October 2010The Future of Higher Education in Scotland, Edinburgh February 2011 Educational Spaces for Alterity, Nottingham, April 2011 Beyond the Crisis: Learning from each other’s struggles, Dublin, May 201

Food Poverty and Christianity in Britain: A Theological Re-assessment

The Christian response to food poverty in Britain has generally been two-fold. Foodbanks have become synonymous with Christianity and exemplify its charitable ethos. However, Christian churches have also called for social justice so that people can buy food in the normal way. Both responses are theologically problematic. The idea of foodbank is borne of a privileged theology that celebrates charitable giving, despite the humiliation it invites on recipients. Although social justice approaches originate in human rights discourse, the location of these rights in food consumerism means that it is equally privileged. Drawing on contextual and liberation theology, as well as ideas from radical orthodoxy, I argue that food poverty is better understood when we assign epistemological privilege to the poor. This leads me to advocate an alternative Christian response to food poverty

Xpert MTB/RIF Ultra assay for pulmonary tuberculosis and rifampicin resistance in adults and adolescents

BackgroundXpert MTB/RIF Ultra (Xpert Ultra) is a molecular World Health Organization (WHO)‐recommended rapid diagnostic test that simultaneously detects tuberculosis and rifampicin resistance. This review updates a comparative accuracy Cochrane review of Xpert MTB/RIF and Xpert Ultra as Xpert Ultra has replaced Xpert MTB/RIF.ObjectivesTo determine the diagnostic accuracy of Xpert MTB/RIF Ultra (Xpert Ultra) for detecting pulmonary tuberculosis and rifampicin resistance in adults and adolescents with presumptive tuberculosis based on signs or symptoms or with an abnormal chest x‐ray suggestive of tuberculosis.Search methodsWe searched seven databases including CENTRAL, MEDLINE, and Embase, plus two trial registers (ClinicalTrials.gov and the WHO ICTRP) to 16 October 2023 without language restrictions. A WHO Public Call for ongoing and unpublished studies was made between 30 November 2023 and 15 February 2024.Selection criteriaWe included cross‐sectional studies, cohort studies, and randomised controlled trials that provided data on the diagnostic accuracy of Xpert Ultra using respiratory specimens in adolescents (aged 10 to 14 years) and adults (aged 15 years and older) with presumptive pulmonary tuberculosis. For pulmonary tuberculosis detection, the reference standards were culture and a composite reference standard. For rifampicin resistance, the reference standards were culture‐based phenotypic drug susceptibility testing with or without whole genome sequencing.Data collection and analysisTwo review authors independently extracted data using a standardised form. We assessed risk of bias using QUADAS‐2. We performed meta‐analyses using a bivariate model to produce summary sensitivities and specificities, separately for pulmonary tuberculosis detection and rifampicin resistance detection. We performed subgroup analyses by smear status, HIV status, and history of tuberculosis. We summarised Xpert Ultra trace‐positive results.Main resultsPulmonary tuberculosis detectionFor detection of pulmonary tuberculosis, Xpert Ultra summary sensitivity and specificity against culture were 90.7% (95% confidence interval (CI) 88.2 to 92.7) and 94.8% (95% CI 92.8 to 96.3) (32 studies, 12,529 participants; high‐certainty evidence). Most studies had low risk of bias in all QUADAS‐2 domains. If the point estimates for Xpert Ultra are applied to a hypothetical cohort of 1000 people, where 100 of those presenting with symptoms have pulmonary tuberculosis, Xpert Ultra will miss nine cases. The number of people wrongly diagnosed with pulmonary tuberculosis would be 47.In people living with HIV, Xpert Ultra summary sensitivity and specificity were 87.7% (82.0 to 91.7) and 95.3% (92.2 to 97.2) (11 studies, 1164 participants). Amongst people with smear‐negative, culture‐positive pulmonary tuberculosis, Xpert Ultra summary sensitivity and specificity were 80.7% (75.4 to 85.0) and 94.0% (91.3 to 95.9) (16 studies, 6460 participants). In people with a history of tuberculosis, Xpert Ultra summary sensitivity and specificity were 84.8% (78.2 to 89.7) and 86.2% (78.9 to 91.3) (9 studies, 809 participants).The proportion of Ultra trace‐positive results that were true positives compared to the microbiological reference standard was 38.8%. Reclassifying trace‐positive results as Xpert Ultra‐negative led to a reduction in sensitivity and modest increase in specificity.Rifampicin resistance detectionFor detection of rifampicin resistance, Xpert Ultra summary sensitivity and specificity were 95.8% (93.2 to 97.4) and 98.3% (97.0 to 99.0) (10 studies, 1644 participants; high‐certainty evidence). Most studies had low risk of bias in all QUADAS‐2 domains. If the point estimates for Xpert Ultra are applied to a hypothetical cohort of 1000 people, where 100 of those presenting with symptoms have rifampicin resistance, Xpert Ultra will miss four cases. The number of people wrongly diagnosed with rifampicin resistance would be 16 out of the 900 who do not have rifampicin resistance. Xpert Ultra performed similarly, for rifampicin resistance, in people with smear‐positive and smear‐negative tuberculosis.Authors' conclusionsXpert Ultra has high sensitivity and specificity for detection of pulmonary tuberculosis rifampicin resistance. Xpert Ultra for the detection of pulmonary tuberculosis has lower sensitivity in people with smear‐negative/culture‐positive tuberculosis and lower sensitivity and specificity in people with a history of tuberculosis. Xpert Ultra trace‐positive results were common.Strengths of this review include the approach to identifying relevant studies, the number of studies and participants included in this systematic review, and that most studies were at low risk of bias. The small number of studies (six) and participants who were adolescents is a limitation to our accuracy estimates in this age group.Xpert Ultra testing provides accurate results and can allow rapid initiation of treatment for rifampicin‐resistant and multiple‐drug‐resistant tuberculosis.FundingThe WHO supported this systematic review. Liverpool School of Tropical Medicine hosted the Cochrane Infectious Diseases Group (CIDG) editorial base, which supported the authors in the development of this review update. The Foreign, Commonwealth and Development Office funded the CIDG.RegistrationGeneric protocol available on Open Science Framework via https://osf.io/26wg7/wiki/home/. Previous protocol and review versions available via DOI 10.1002/14651858.CD009593 and DOI 10.1002/14651858.CD009593.pub5.<p/

Social movements and public health advocacy in action : the UK people's health movement

There are growing calls within public health for researchers and practitioners working to improve and protect the public's health to become more involved in politics and advocacy. Such a move takes practitioners and researchers beyond the traditional, evidence-based public health paradigm, raising potential dilemmas and risks for those who undertake such work. Drawing on the example of the People's Health Movement, this short paper argues that advocacy and social movements are an essential component of public health's efforts to achieve great health equity. It outlines how the Scottish branch of the People's Health Movement sought to overcome potential tensions between public health evidence and advocacy by developing a regional manifesto for health via transparent and democratic processes which combine empirical and experiential evidence. We suggest that this is an illustrative example of how potential tensions between public health research and advocacy can be overcome, through bottom–up movements of solidarity and action

Xpert MTB/RIF Ultra assay for tuberculosis disease and rifampicin resistance in children

Background: In 2023, an estimated 1.3 million children (aged 0-14 years) became ill with tuberculosis, and 166,000 children (aged 0-15 years) died from the disease. Xpert MTB/RIF Ultra (Xpert Ultra) is a molecular World Health Organization (WHO)-recommended rapid diagnostic test that detects Mycobacterium tuberculosis complex and rifampicin resistance. This is an update of a Cochrane review first published in 2020 and last updated in 2022. Parts of the current update informed the 2024 WHO updated guidance for the diagnosis of tuberculosis.OBJECTIVES: To assess the diagnostic accuracy of Xpert Ultra for detecting pulmonary tuberculosis, tuberculous meningitis, lymph node tuberculosis, and rifampicin resistance in children (aged 0-9 years) with presumed tuberculosis.SEARCH METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, three other databases, and three trial registers without language restrictions to 6 October 2023.SELECTION CRITERIA: For study design, we included cross-sectional and cohort studies and randomized trials that evaluated Xpert Ultra in HIV-positive and HIV-negative children aged birth to nine years. Regarding specimen type, we included studies evaluating sputum, gastric, stool, or nasopharyngeal specimens (pulmonary tuberculosis); cerebrospinal fluid (tuberculous meningitis); and fine needle aspirate or surgical biopsy tissue (lymph node tuberculosis). Reference standards for detection of tuberculosis were microbiological reference standard (MRS; including culture) or composite reference standard (CRS); for stool, we considered Xpert Ultra in sputum or gastric aspirates in addition to culture. Reference standards for detection of rifampicin resistance in sputum were phenotypic drug susceptibility testing or targeted or whole genome sequencing.DATA COLLECTION AND ANALYSIS: Two review authors independently extracted data and assessed methodological quality using the tailored QUADAS-2 tool, judging risk of bias separately for each target condition and sample type. We conducted separate meta-analyses for detection of pulmonary tuberculosis, tuberculous meningitis, lymph node tuberculosis, and rifampicin resistance. We used a bivariate model to estimate summary sensitivity and specificity with 95% confidence intervals (CIs). We assessed certainty of evidence using the GRADE approach.MAIN RESULTS: This update included 23 studies (including 9 new studies since the previous review) that evaluated detection of pulmonary tuberculosis (21 studies, 9223 children), tuberculous meningitis (3 studies, 215 children), lymph node tuberculosis (2 studies, 58 children), and rifampicin resistance (3 studies, 130 children). Seventeen studies (74%) took place in countries with a high tuberculosis burden. Overall, risk of bias and applicability concerns were low. Detection of pulmonary tuberculosis (microbiological reference standard) Sputum (11 studies) Xpert Ultra summary sensitivity was 75.3% (95% CI 68.9% to 80.8%; 345 children; moderate-certainty evidence), and specificity was 95.9% (95% CI 92.3% to 97.9%; 2645 children; high-certainty evidence). Gastric aspirate (12 studies) Xpert Ultra summary sensitivity was 69.6% (95% CI 60.3% to 77.6%; 167 children; moderate-certainty evidence), and specificity was 91.0% (95% CI 82.5% to 95.6%; 1792 children; moderate-certainty evidence). Stool (10 studies) Xpert Ultra summary sensitivity was 68.0% (95% CI 50.3% to 81.7%; 255 children; moderate-certainty evidence), and specificity was 98.2% (95% CI 96.3% to 99.1%; 2630 children; high-certainty evidence). Nasopharyngeal aspirate (6 studies) Xpert Ultra summary sensitivity was 46.2% (95% CI 34.9% to 57.9%; 94 children; moderate-certainty evidence), and specificity was 97.5% (95% CI 95.1% to 98.7%; 1259 children; high-certainty evidence). Xpert Ultra sensitivity was lower against CRS than against MRS for all specimen types, while the specificities were similar. Extrapulmonary tuberculosis Meta-analysis was not possible for lymph node tuberculosis and tuberculous meningitis due to low study numbers. Interpretation of results For a population of 1000 children, where 100 have pulmonary tuberculosis: In sputum:• 112 would be Xpert Ultra positive, of whom 75 would have pulmonary tuberculosis (true positives) and 37 would not (false positives). • 888 would be Xpert Ultra negative, of whom 863 would not have pulmonary tuberculosis (true negatives) and 25 would have pulmonary tuberculosis (false negatives). In gastric aspirate: • 151 would be Xpert Ultra positive, of whom 70 would have pulmonary tuberculosis (true positives) and 81 would not (false positives). • 849 would be Xpert Ultra negative, of whom 819 would not have pulmonary tuberculosis (true negatives) and 30 would have pulmonary tuberculosis (false negatives). In stool: • 85 would be Xpert Ultra positive, of whom 68 would have pulmonary tuberculosis (true positives) and 17 would not (false positives). • 915 would be Xpert Ultra negative, of whom 883 would not have pulmonary tuberculosis (true negatives) and 32 would have pulmonary tuberculosis (false negatives). In nasopharyngeal aspirate: • 68 would be Xpert Ultra positive, of whom 46 would have pulmonary tuberculosis (true positives) and 22 would not (false positives). • 932 would be Xpert Ultra negative, of whom 878 would not have pulmonary tuberculosis (true negatives), and 54 would have pulmonary tuberculosis (false negatives). Detection of rifampicin resistance Three studies with 76 children evaluated detection of rifampicin resistance (sputum only); two of these studies reported no cases and one reported rifampicin resistance in two children.AUTHORS' CONCLUSIONS: Xpert Ultra sensitivity was moderate in sputum, gastric aspirate, and stool specimens. Nasopharyngeal aspirate had the lowest sensitivity. Xpert Ultra specificity was high against both MRS and CRS. We were unable to determine the accuracy of Xpert Ultra for detecting tuberculous meningitis, lymph node tuberculosis, and rifampicin resistance due to a paucity of data.FUNDING: This update was funded through WHO.REGISTRATION: The protocol for this review was originally published through Cochrane in 2019. The protocol for this update was a generic protocol that consolidated previously published Cochrane protocols of Xpert Ultra for tuberculosis detection and can be accessed at https://osf.io/26wg7/. Protocol (2019) DOI: 10.1002/14651858.CD013359 Original review (2020) DOI: 10.1002/14651858.CD013359.pub2 Review update (2022) DOI: 10.1002/14651858.CD013359.pub3.</p

Decisions at the end of life: have we come of age?

Decision making is a complex process and it is particularly challenging to make decisions with, or for, patients who are near the end of their life. Some of those challenges will not be resolved - due to our human inability to foresee the future precisely and the human proclivity to change stated preferences when faced with reality. Other challenges of the decision-making process are manageable. This commentary offers a set of approaches which may lead to progress in this field

Accuracy of glomerular filtration rate estimation using creatinine and cystatin C for identifying and monitoring moderate chronic kidney disease: the eGFR-C study

Background Estimation of glomerular filtration rate using equations based on creatinine is widely used to manage chronic kidney disease. In the UK, the Chronic Kidney Disease Epidemiology Collaboration creatinine equation is recommended. Other published equations using cystatin C, an alternative marker of kidney function, have not gained widespread clinical acceptance. Given higher cost of cystatin C, its clinical utility should be validated before widespread introduction into the NHS. Objectives Primary objectives were to: (1) compare accuracy of glomerular filtration rate equations at baseline and longitudinally in people with stage 3 chronic kidney disease, and test whether accuracy is affected by ethnicity, diabetes, albuminuria and other characteristics; (2) establish the reference change value for significant glomerular filtration rate changes; (3) model disease progression; and (4) explore comparative cost-effectiveness of kidney disease monitoring strategies. Design A longitudinal, prospective study was designed to: (1) assess accuracy of glomerular filtration rate equations at baseline (n = 1167) and their ability to detect change over 3 years (n = 875); (2) model disease progression predictors in 278 individuals who received additional measurements; (3) quantify glomerular filtration rate variability components (n = 20); and (4) develop a measurement model analysis to compare different monitoring strategy costs (n = 875). Setting Primary, secondary and tertiary care. Participants Adults (≥ 18 years) with stage 3 chronic kidney disease. Interventions Estimated glomerular filtration rate using the Chronic Kidney Disease Epidemiology Collaboration and Modification of Diet in Renal Disease equations. Main outcome measures Measured glomerular filtration rate was the reference against which estimating equations were compared with accuracy being expressed as P30 (percentage of values within 30% of reference) and progression (variously defined) studied as sensitivity/specificity. A regression model of disease progression was developed and differences for risk factors estimated. Biological variation components were measured and the reference change value calculated. Comparative costs of monitoring with different estimating equations modelled over 10 years were calculated. Results Accuracy (P30) of all equations was ≥ 89.5%: the combined creatinine–cystatin equation (94.9%) was superior (p &lt; 0.001) to other equations. Within each equation, no differences in P30 were seen across categories of age, gender, diabetes, albuminuria, body mass index, kidney function level and ethnicity. All equations showed poor (&lt; 63%) sensitivity for detecting patients showing kidney function decline crossing clinically significant thresholds (e.g. a 25% decline in function). Consequently, the additional cost of monitoring kidney function annually using a cystatin C-based equation could not be justified (incremental cost per patient over 10 years = £43.32). Modelling data showed association between higher albuminuria and faster decline in measured and creatinine-estimated glomerular filtration rate. Reference change values for measured glomerular filtration rate (%, positive/negative) were 21.5/−17.7, with lower reference change values for estimated glomerular filtration rate. Limitations Recruitment of people from South Asian and African-Caribbean backgrounds was below the study target. Future work Prospective studies of the value of cystatin C as a risk marker in chronic kidney disease should be undertaken. Conclusions Inclusion of cystatin C in glomerular filtration rate-estimating equations marginally improved accuracy but not detection of disease progression. Our data do not support cystatin C use for monitoring of glomerular filtration rate in stage 3 chronic kidney disease