Medical Research Council.

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Aim: To assess the efficacy of automated ''disease/no disease'' grading for diabetic retinopathy within a systematic screening programme. Methods: Anonymised images were obtained from consecutive patients attending a regional primary care based diabetic retinopathy screening programme. A training set of 1067 images was used to develop automated grading algorithms. The final software was tested using a separate set of 14 406 images from 6722 patients. The sensitivity and specificity of manual and automated systems operating as ''disease/no disease'' graders (detecting poor quality images and any diabetic retinopathy) were determined relative to a clinical reference standard. Results: The reference standard classified 8.2% of the patients as having ungradeable images (technical failures) and 62.5% as having no retinopathy. Detection of technical failures or any retinopathy was achieved by manual grading with 86.5% sensitivity (95% confidence interval 85.1 to 87.8) and 95.3% specificity (94.6 to 95.9) and by automated grading with 90.5% sensitivity (89.3 to 91.6) and 67.4% specificity (66.0 to 68.8). Manual and automated grading detected 99.1% and 97.9%, respectively, of patients with referable or observable retinopathy/maculopathy. Manual and automated grading detected 95.7% and 99.

clinicaltrials.gov Identifier: ISRCTN67013851.

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Objective To investigate the impact of maternal body mass index (BMI, kg/m 2 ) on clinical complications, inpatient admissions, and additional short-term costs to the National Health Service (NHS) in Scotland.Design Retrospective cohort study using an unselected population database.Setting Obstetric units in Scotland, 2003 Population A total of 124 280 singleton deliveries in 109 592 women with a maternal BMI recorded prior to 16 weeks of gestation.Methods Population-based retrospective cohort study of singleton deliveries, with multivariable analysis used to assess short-term morbidity and health service costs. Conclusions Maternal BMI influences maternal and neonatal morbidity, the number and duration of maternal and neonatal admissions, and health service costs.

Declared competing interests of authors: ARP has received reporting fees from Nuada Medical Prostate Care for patients with prostate cancer who were scanned at their medical facilities. JR has received consultancy honoraria and payment for lectures, expert testimony and travel/accommodation/meetings expenses from GlaxoSmithKline, and consultancy honoraria, payment for lectures and travel/ accommodation/meetings expenses from Ipsen. TS has received payment for travel/accommodation/ meeting expenses from multiple sources and his institution has received payment from Siemens Healthcare for a research collaboration. Published May 2013 DOI: 10.3310/hta17200This report should be referenced as follows:Mowatt G, Scotland G, Boachie C, Cruickshank M, Ford JA, Fraser C, et al. The diagnostic accuracy and cost-effectiveness of magnetic resonance spectroscopy and enhanced magnetic resonance imaging techniques in aiding the localisation of prostate abnormalities for biopsy: a systematic review and economic evaluation. Health Technol Assess 2013;17(20). This journal is a member of and subscribes to the principles of the Committee on Publication Ethics (COPE) (www.publicationethics.org/). Health Technology Assessment is indexed and abstracted inEditorial contact: nihredit@southampton.ac.ukThe full HTA archive is freely available to view online at www.journalslibrary.nihr.ac.uk/hta. Print-on-demand copies can be purchased from the report pages of the NIHR Journals Library website: www.journalslibrary.nihr.ac.uk Criteria for inclusion in the Health Technology Assessment journalReports are published in Health Technology Assessment (HTA) if (1) they have resulted from work for the HTA programme, and (2) they are of a sufficiently high scientific quality as assessed by the reviewers and editors.Reviews in Health Technology Assessment are termed 'systematic' when the account of the search appraisal and synthesis methods (to minimise biases and random errors) would, in theory, permit the replication of the review by others. HTA programmeThe HTA programme, part of the National Institute for Health Research (NIHR), was set up in 1993. It produces high-quality research information on the effectiveness, costs and broader impact of health technologies for those who use, manage and provide care in the NHS. 'Health technologies' are broadly defined as all interventions used to promote health, prevent and treat disease, and improve rehabilitation and long-term care.The journal is indexed in NHS Evidence via its abstracts included in MEDLINE and its Technology Assessment Reports inform National Institute for Health and Care Excellence (NICE) guidance. HTA research is also an important source of evidence for National Screening Committee (NSC) policy decisions.For more information about the HTA programme please visit the website: www.hta.ac.uk/ This reportThe research reported in this issue of the journal was funded by the HTA programme as project number 09/146/01. The contractual start date was in August 2010. The draft report began editorial ...

BackgroundFoam sclerotherapy (foam) and endovenous laser ablation (EVLA) have emerged as alternative treatments to surgery for patients with varicose veins, but uncertainty exists regarding their effectiveness in the medium to longer term.ObjectivesTo assess the clinical effectiveness and cost-effectiveness of foam, EVLA and surgery for the treatment of varicose veins.DesignA parallel-group randomised controlled trial (RCT) without blinding, and economic modelling evaluation.SettingEleven UK specialist vascular centres.ParticipantsSeven hundred and ninety-eight patients with primary varicose veins (foam,n = 292; surgery,n = 294; EVLA,n = 212).InterventionsPatients were randomised between all three treatment options (eight centres) or between foam and surgery (three centres).Primary outcome measuresDisease-specific [Aberdeen Varicose Vein Questionnaire (AVVQ)] and generic [European Quality of Life-5 Dimensions (EQ-5D), Short Form questionnaire-36 items (SF-36) physical and mental component scores] quality of life (QoL) at 6 months. Cost-effectiveness as cost per quality-adjusted life-year (QALY) gained.Secondary outcome measuresQuality of life at 6 weeks; residual varicose veins; Venous Clinical Severity Score (VCSS); complication rates; return to normal activity; truncal vein ablation rates; and costs.ResultsThe results appear generalisable in that participants’ baseline characteristics (apart from a lower-than-expected proportion of females) and post-treatment improvement in outcomes were comparable with those in other RCTs. The health gain achieved in the AVVQ with foam was significantly lower than with surgery at 6 months [effect size −1.74, 95% confidence interval (CI) −2.97 to −0.50;p = 0.006], but was similar to that achieved with EVLA. The health gain in SF-36 mental component score for foam was worse than that for EVLA (effect size 1.54, 95% CI 0.01 to 3.06;p = 0.048) but similar to that for surgery. There were no differences in EQ-5D or SF-36 component scores in the surgery versus foam or surgery versus EVLA comparisons at 6 months.The trial-based cost-effectiveness analysis showed that, at 6 months, foam had the highest probability of being considered cost-effective at a ceiling willingness-to-pay ratio of £20,000 per QALY. EVLA was found to cost £26,107 per QALY gained versus foam, and was less costly and generated slightly more QALYs than surgery. Markov modelling using trial costs and the limited recurrence data available suggested that, at 5 years, EVLA had the highest probability (≈ 79%) of being cost-effective at conventional thresholds, followed by foam (≈ 17%) and surgery (≈ 5%).With regard to secondary outcomes, health gains at 6 weeks (p < 0.005) were greater for EVLA than for foam (EQ-5D,p = 0.004). There were fewer procedural complications in the EVLA group (1%) than after foam (7%) and surgery (8%) (p < 0.001). Participants returned to a wide range of behaviours more quickly following foam or EVLA than following surgery (p < 0.05). There were no differences in VCSS between the three treatments. Truncal ablation rates were higher for surgery (p < 0.001) and EVLA (p < 0.001) than for foam, and were similar for surgery and EVLA.ConclusionsConsiderations of both the 6-month clinical outcomes and the estimated 5-year cost-effectiveness suggest that EVLA should be considered as the treatment of choice for suitable patients.Future workFive-year trial results are currently being evaluated to compare the cost-effectiveness of foam, surgery and EVLA, and to determine the recurrence rates following each treatment. This trial has highlighted the need for long-term outcome data from RCTs on QoL, recurrence rates and costs for foam sclerotherapy and other endovenous techniques compared against each other and against surgery.Trial registrationCurrent Controlled Trials ISRCTN51995477.FundingThis project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full inHealth Technology Assessment; Vol. 19, No. 27. See the NIHR Journals Library website for further project information.