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Leyland K, Gates L, Nevitt M, Felson D, Bierma-Zeinstra S, Conaghan P, Engebretsen L, Hochberg M, Hunter D, Jones G, Jordan J, Judge A, Lohmander L, Roos E, Sanchez-Santos M, Yoshimura N, van Meurs J, Batt M, Newton J, Cooper C, Arden N. Harmonising measures of knee and hip osteoarthritis in population-based cohort studies: an international study. Osteoarthritis Cartilage 2018; 26:872-879. [PMID: 29426005 PMCID: PMC6010158 DOI: 10.1016/j.joca.2018.01.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 01/26/2018] [Accepted: 01/30/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Population-based osteoarthritis (OA) cohorts provide vital data on risk factors and outcomes of OA, however the methods to define OA vary between cohorts. We aimed to provide recommendations for combining knee and hip OA data in extant and future population cohort studies, in order to facilitate informative individual participant level analyses. METHOD International OA experts met to make recommendations on: 1) defining OA by X-ray and/or pain; 2) compare The National Health and Nutrition Examination Survey (NHANES)-type OA pain questions; 3) the comparability of the Western Ontario & McMaster Universities Osteoarthritis Index (WOMAC) scale to NHANES-type OA pain questions; 4) the best radiographic scoring method; 5) the usefulness of other OA outcome measures. Key issues were explored using new analyses in two population-based OA cohorts (Multicenter Osteoarthritis Study; MOST and Osteoarthritis Initiative OAI). RESULTS OA should be defined by both symptoms and radiographs, with symptoms alone as a secondary definition. Kellgren and Lawrence (K/L) grade ≥2 should be used to define radiographic OA (ROA). The variable wording of pain questions can result in varying prevalence between 41.0% and 75.4%, however questions where the time anchor is similar have high sensitivity and specificity (91.2% and 89.9% respectively). A threshold of 3 on a 0-20 scale (95% CI 2.1, 3.9) in the WOMAC pain subscale demonstrated equivalence with the preferred NHANES-type question. CONCLUSION This research provides recommendations, based on expert agreement, for harmonising and combining OA data in existing and future population-based cohorts.
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Affiliation(s)
- K.M. Leyland
- NIHR Musculoskeletal Biomedical Research Unit and Arthritis Research UK Centre for Sport, Exercise, and Osteoarthritis, University of Oxford, Oxford, UK,MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
| | - L.S. Gates
- NIHR Musculoskeletal Biomedical Research Unit and Arthritis Research UK Centre for Sport, Exercise, and Osteoarthritis, University of Oxford, Oxford, UK,MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
| | - M. Nevitt
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
| | - D. Felson
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, MA, USA
| | - S.M. Bierma-Zeinstra
- Department of General Practice, Erasmus University Medical Centre, Rotterdam, the Netherlands,Department of Orthopaedics, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - P.G. Conaghan
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds & NIHR Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK
| | - L. Engebretsen
- Department of Orthopaedic Surgery, Oslo University Hospital and Oslo Sports Trauma Research Center, Norwegian School of Sports Sciences, Oslo, Norway
| | - M. Hochberg
- University of Maryland School of Medicine, Baltimore, USA
| | - D.J. Hunter
- Institute of Bone and Joint Research, Kolling Institute, University of Sydney, Sydney, Australia,Rheumatology Department, Royal North Shore Hospital, St Leonards, Sydney, Australia
| | - G. Jones
- Menzies Research Institute Tasmania, University of Tasmania, Hobart, Australia
| | - J.M. Jordan
- Thurston Arthritis Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC USA,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC USA
| | - A. Judge
- NIHR Musculoskeletal Biomedical Research Unit and Arthritis Research UK Centre for Sport, Exercise, and Osteoarthritis, University of Oxford, Oxford, UK
| | - L.S. Lohmander
- Lund University, Department of Clinical Sciences Lund, Orthopaedics, Lund, Sweden
| | - E.M. Roos
- Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - M.T. Sanchez-Santos
- NIHR Musculoskeletal Biomedical Research Unit and Arthritis Research UK Centre for Sport, Exercise, and Osteoarthritis, University of Oxford, Oxford, UK
| | - N. Yoshimura
- Department of Joint Disease Research, 22nd Century Medical & Research Center, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - J.B.J. van Meurs
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - M.E. Batt
- Centrefor Sports Medicine, Nottingham University Hospitals and Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nottingham, UK
| | - J. Newton
- NIHR Musculoskeletal Biomedical Research Unit and Arthritis Research UK Centre for Sport, Exercise, and Osteoarthritis, University of Oxford, Oxford, UK
| | - C. Cooper
- NIHR Musculoskeletal Biomedical Research Unit and Arthritis Research UK Centre for Sport, Exercise, and Osteoarthritis, University of Oxford, Oxford, UK,MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
| | - N.K Arden
- NIHR Musculoskeletal Biomedical Research Unit and Arthritis Research UK Centre for Sport, Exercise, and Osteoarthritis, University of Oxford, Oxford, UK,MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
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McAvoy NC, Semple S, Richards JMJ, Robson AJ, Patel D, Jardine AGM, Leyland K, Cooper AS, Newby DE, Hayes PC. Differential visceral blood flow in the hyperdynamic circulation of patients with liver cirrhosis. Aliment Pharmacol Ther 2016; 43:947-54. [PMID: 26947424 DOI: 10.1111/apt.13571] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 05/14/2015] [Accepted: 02/04/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND With advancing liver disease and the development of portal hypertension, there are major alterations in somatic and visceral blood flow. Using phase-contrast magnetic resonance angiography, we characterised alterations in blood flow within the hepatic, splanchnic and extra-splanchnic circulations of patients with established liver cirrhosis. AIM To compare blood flow in splanchnic and extra-splanchnic circulations in patients with varying degrees of cirrhosis and healthy controls. METHODS In a single-centre prospective study, 21 healthy volunteers and 19 patients with established liver disease (Child's stage B and C) underwent electrocardiogram-gated phase-contrast-enhanced 3T magnetic resonance angiography of the aorta, hepatic artery, portal vein, superior mesenteric artery, and the renal and common carotid arteries. RESULTS In comparison to healthy volunteers, resting blood flow in the descending thoracic aorta was increased by 43% in patients with liver disease (4.31 ± 1.47 vs. 3.31 ± 0.80 L/min, P = 0.011). While portal vein flow was similar (0.83 ± 0.38 vs. 0.77 ± 0.35 L/min, P = 0.649), hepatic artery flow doubled (0.50 ± 0.46 vs. 0.25 ± 0.15 L/min, P = 0.021) and consequently total liver blood flow increased by 30% (1.33 ± 0.84 vs. 1.027 ± 0.5 L/min, P = 0.043). In patients with liver disease, superior mesenteric artery flow was threefold higher (0.65 ± 0.35 vs. 0.22 ± 0.13 L/min, P < 0.001), while total renal blood flow was reduced by 40% (0.37 ± 0.14 vs. 0.62 ± 0.22 L/min, P < 0.001) and total carotid blood flow unchanged (0.62 ± 0.20 vs. 0.65 ± 0.13 L/min, P = 0.315). CONCLUSIONS Rather than a generalised systemic hyperdynamic circulation, liver disease is associated with dysregulated splanchnic vasodilatation and portosystemic shunting that, while inducing a high cardiac output, causes compensatory extra-splanchnic vasoconstriction - the 'splanchnic steal' phenomenon. These circulatory disturbances may underlie many of the manifestations of advanced liver disease.
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Affiliation(s)
- N C McAvoy
- Department of Hepatology, University of Edinburgh, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - S Semple
- Clinical Research Imaging Centre, Queen's Medical Research Institute, Edinburgh, UK.,Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - J M J Richards
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK.,Clinical Surgery, University of Edinburgh, Edinburgh, UK
| | - A J Robson
- Clinical Surgery, University of Edinburgh, Edinburgh, UK
| | - D Patel
- Clinical Research Imaging Centre, Queen's Medical Research Institute, Edinburgh, UK.,Department of Radiology, Royal infirmary of Edinburgh, Edinburgh, UK
| | - A G M Jardine
- Medical School, University of Edinburgh, Edinburgh, UK
| | - K Leyland
- Medical School, University of Edinburgh, Edinburgh, UK
| | - A S Cooper
- Clinical Research Imaging Centre, Queen's Medical Research Institute, Edinburgh, UK
| | - D E Newby
- Clinical Research Imaging Centre, Queen's Medical Research Institute, Edinburgh, UK.,Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - P C Hayes
- Department of Hepatology, University of Edinburgh, Royal Infirmary of Edinburgh, Edinburgh, UK
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Goulston L, Sanchez-Santos M, D'Angelo S, Leyland K, Hart D, Spector T, Cooper C, Dennison E, Hunter D, Arden N. A comparison of radiographic anatomic axis knee alignment measurements and cross-sectional associations with knee osteoarthritis. Osteoarthritis Cartilage 2016; 24:612-22. [PMID: 26700504 PMCID: PMC4819520 DOI: 10.1016/j.joca.2015.11.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 11/02/2015] [Accepted: 11/17/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Malalignment is associated with knee osteoarthritis (KOA), however, the optimal anatomic axis (AA) knee alignment measurement on a standard limb radiograph (SLR) is unknown. This study compares one-point (1P) and two-point (2P) AA methods using three knee joint centre locations and examines cross-sectional associations with symptomatic radiographic knee osteoarthritis (SRKOA), radiographic knee osteoarthritis (RKOA) and knee pain. METHODS AA alignment was measured six different ways using the KneeMorf software on 1058 SLRs from 584 women in the Chingford Study. Cross-sectional associations with principal outcome SRKOA combined with greatest reproducibility determined the optimal 1P and 2P AA method. Appropriate varus/neutral/valgus alignment categories were established using logistic regression with generalised estimating equation models fitted with restricted cubic spline function. RESULTS The tibial plateau centre displayed greatest reproducibility and associations with SRKOA. As mean 1P and 2P values differed by >2°, new alignment categories were generated for 1P: varus <178°, neutral 178-182°, valgus >182° and for 2P methods: varus <180°, neutral 180-185°, valgus >185°. Varus vs neutral alignment was associated with a near 2-fold increase in SRKOA and RKOA, and valgus vs neutral for RKOA using 2P method. Nonsignificant associations were seen for 1P method for SRKOA, RKOA and knee pain. CONCLUSIONS AA alignment was associated with SRKOA and the tibial plateau centre had the strongest association. Differences in AA alignment when 1P vs 2P methods were compared indicated bespoke alignment categories were necessary. Further replication and validation with mechanical axis alignment comparison is required.
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Affiliation(s)
- L.M. Goulston
- MRC Lifecourse Epidemiology Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - M.T. Sanchez-Santos
- Oxford NIHR Musculoskeletal Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK,Arthritis Research UK Sports Exercise and Osteoarthritis Centre of Excellence, University of Oxford, UK
| | - S. D'Angelo
- MRC Lifecourse Epidemiology Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - K.M. Leyland
- Oxford NIHR Musculoskeletal Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK,Arthritis Research UK Sports Exercise and Osteoarthritis Centre of Excellence, University of Oxford, UK
| | - D.J. Hart
- Department of Twin Research & Genetic Epidemiology, King's College London, London, UK
| | - T.D. Spector
- Department of Twin Research & Genetic Epidemiology, King's College London, London, UK
| | - C. Cooper
- MRC Lifecourse Epidemiology Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - E.M. Dennison
- MRC Lifecourse Epidemiology Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - D. Hunter
- Oxford NIHR Musculoskeletal Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK,Chromatic Innovation Limited, Leamington Spa, UK
| | - N.K. Arden
- MRC Lifecourse Epidemiology Unit, Faculty of Medicine, University of Southampton, Southampton, UK,Oxford NIHR Musculoskeletal Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK,Arthritis Research UK Sports Exercise and Osteoarthritis Centre of Excellence, University of Oxford, UK,Address correspondence and reprint requests to: N.K. Arden, Oxford NIHR Musculoskeletal Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Windmill Road, Headington, Oxford, OX3 7LD, UK. Tel: 44-(0)1865-737859; Fax: 44-(0)1865-227966.
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Prieto-Alhambra D, Leyland K, Judge A, Javaid MK, Cooper C, Arden NK. THU0520 The Influence of Overweight/Obesity on the Risk of Total Knee Arthroplasty amongst Patients with Newly Diagnosed Knee Osteoarthritis: A Population-Based Cohort Study. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
AIMS AND METHODS Thyroid function tests were initially carried out on 122 children with Down's syndrome aged 6-14 years and then repeated four to six years later in 103 adolescents (85% of the group of 122) when they were aged 10-20 years (median 14.4 years). At the second test two were hypothyroid and two with isolated raised thyroid stimulating hormone (IR-TSH) were receiving thyroxine. RESULTS At the first test there were 98 (80%) euthyroid children: 83 were retested and four (5%) had IR-TSH. At the first test 24 had IR-TSH: 20 were retested and 14 (70%) had become normal. Seventeen with IR-TSH on initial testing had a thyrotrophin releasing hormone test within three months; TSH had become normal in eight (47%) of these children. There was no association between reported clinical symptoms and IR-TSH, but there were clear symptoms in one of the two with definite hypothyroidism. CONCLUSIONS The likelihood ratio for a positive result on second testing when raised TSH and positive antibody status on first testing are combined is 20. This suggests initial testing results could be used as a basis to select a subgroup for further testing at say five yearly intervals unless new symptoms emerge in the interim. It also suggests that yearly screening (as recommended by the American Academy of Pediatrics, 2001) is probably not justified in the first 20 years of life.
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Affiliation(s)
- P A Gibson
- Department of Paediatrics, Royal Lancaster Infirmary, Lancaster, UK
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Kennedy CR, Leyland K. Comparison of screening instruments for disability and emotional/behavioral disorders with a generic measure of health-related quality of life in survivors of childhood brain tumors. Int J Cancer Suppl 2000; 12:106-11. [PMID: 10679880 DOI: 10.1002/(sici)1097-0215(1999)83:12+<106::aid-ijc19>3.0.co;2-t] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The sensory, motor, educational and emotional/behavioral outcomes in 32 survivors of childhood brain tumors were evaluated by examination, interview, questionnaires on emotion/behavior and the Health Utilities Index Mark 2 (HUI 2). Thirty-eight percent had moderate/severe disability, and this was associated closely with special educational provision. Pre- and peri-operative factors were the commonest determinants of disability. Fifty percent had a high score on the emotion/behavior questionnaires, suggesting a high risk of an emotional or behavioral problem. The HUI 2 discriminated well between those survivors who had and those who had not had special provision made for their education but poorly between those with high and those with low scores on the emotion/behavior questionnaires. Previous studies have found self-reported health-related quality of life to be related more closely to emotional/behavioral sequelae than to disability. Possible uses and limitations of the HUI 2 in this clinical context are discussed.
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Affiliation(s)
- C R Kennedy
- Department of Pediatric Neurology, Southampton General Hospital, Southampton, UK
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Noble SE, Leyland K, Findlay CA, Clark CE, Redfern J, Mackenzie JM, Girdwood RW, Donaldson MD. School based screening for hypothyroidism in Down's syndrome by dried blood spot TSH measurement. Arch Dis Child 2000; 82:27-31. [PMID: 10630906 PMCID: PMC1718179 DOI: 10.1136/adc.82.1.27] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To determine the feasibility of annual hypothyroid screening of children with Down's syndrome by measuring thyroid stimulating hormone (TSH) on dried blood spots at school, and to describe the outcome in positive children. DESIGN Establishment of a register of school children with Down's syndrome, and procedures for obtaining permission from parents, annual capillary blood samples, TSH measurement, and clinical assessment of children with TSH values > 10 mU/litre. SUBJECTS All school age children with Down's syndrome within Lanarkshire and Glasgow Health Boards during 1996-7 and 1997-8. RESULTS 200 of 214 school children with Down's syndrome were screened. Four of the unscreened children were receiving thyroxine treatment, and only 5 remained unscreened by default. 15 of the 200 children had capillary TSH > 10 mU/litre, and all but 1 had evidence of Hashimoto's thyroiditis. Seven of the 15 children started thyroxine treatment immediately, 6 with a pronounced rise in venous TSH and subnormal free thyroxine (fT4), and one with mildly raised TSH and normal fT4 but symptoms suggesting hypothyroidism. Eight children with mildly raised venous TSH and normal fT4 were left untreated; 1 year after testing positive, fT4 remained > 9 pmol/litre in all cases, but 4 children were started on thyroxine because of a rise in TSH. TSH fell in 3 of the 4 remaining children and there was a marginal rise in 1; all remain untreated. The prevalence of thyroid disease in this population is >/= 8.9%. CONCLUSION Dried blood spot TSH measurement is effective for detecting hypothyroidism in Down's syndrome and capillary sampling is easily performed at school. The existing programme could be extended to the whole of Scotland within a few years.
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Affiliation(s)
- S E Noble
- Department of Community Child Health, Lanarkshire Healthcare NHS Trust, Motherwell ML1 1TB, UK
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