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Kim YJ, Park KM. Possible Mechanisms for Adverse Cardiac Events Caused by Exercise-Induced Hypertension in Long-Distance Middle-Aged Runners: A Review. J Clin Med 2024; 13:2184. [PMID: 38673457 PMCID: PMC11050973 DOI: 10.3390/jcm13082184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024] Open
Abstract
Sudden cardiac death (SCD) is rare among athletes. However, hypertrophic cardiomyopathy is the leading cause of SCD among those <35 years of age. Meanwhile, coronary artery disease (CAD) is the primary SCD cause among those ≥35 years of age. CAD-induced plaque ruptures are believed to be a significant cause of cardiovascular diseases in middle-aged individuals who participate in extreme long-distance running activities such as marathons. A total of 1970 articles related to EIH were identified using search terms. Out of these, 1946 studies were excluded for reasons such as arterial hypertension, exercise-induced pulmonary hypertension, the absence of exercise stress testing (EST), and a lack of relevance to EIH. The study analyzed 24 studies related to both long-distance runners with exercise-induced hypertension (EIH) and the general public. Among these, 11 studies were quasi-experimentally designed studies used in randomized controlled trials (RCTs) on long-distance runners with EIH. Additionally, 12 studies utilized cohort designs, and one study with a quasi-experimental design was conducted among the general population. Recent studies suggest that an imbalance between oxygen demand and supply due to ventricular hypertrophy may be the actual cause of cardiovascular disease, regardless of CAD. Exercising excessively over an extended period can reduce endothelial function and increase arterial stiffness, which in turn increases afterload and leads to an excessive increase in blood pressure during exercise. Exercise-induced hypertension (EIH), which increases the morbidity rate of resting hypertension and is a risk factor for cardio-cerebro-vascular diseases, is more prevalent in middle-aged long-distance runners than in runners from other age groups, and it increases the prevalence of critical arrhythmias, such as atrial fibrillation or ventricular arrhythmias. EIH is associated with angiotensin II activity, and angiotensin II receptor blockers show promising effects in middle-aged runners. Further, guidelines for preventing excessive participation in races and restricting exercise intensity and frequency would be useful. This review identifies EIH as a potential risk factor for cardiovascular diseases and describes how EIH induces SCD.
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Affiliation(s)
- Young-Joo Kim
- Department of Exercise Rehabilitation Welfare, Sungshin Women’s University, 34 da-gil, Bomun-ro, Seongbuk-gu, Seoul 02844, Republic of Korea
| | - Kyoung-Min Park
- Division of Cardiology, Department of Internal Medicine, Heart Vascular and Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
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Meijer R, Schep G, Regis M, Papen-Botterhuis NE, Savelberg HHCM, van Hooff M. Test-retest reliability of the FitMáx©-questionnaire in a clinical and healthy population. J Patient Rep Outcomes 2024; 8:3. [PMID: 38175456 PMCID: PMC10767039 DOI: 10.1186/s41687-023-00682-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024] Open
Abstract
PURPOSE The FitMáx© was developed as a questionnaire-based instrument to estimate Cardiorespiratory Fitness (CRF) expressed as oxygen uptake at peak exercise (VO2peak). Test-retest reliability is a clinometric measurement property, which defines stability over time if multiple measurements are performed (i.e. reliability). The present study aimed to assess the test-retest reliability of the FitMáx©-questionnaire in different patient groups. PATIENTS AND METHODS A total of 127 cardiac, pulmonary and oncology patients and healthy subjects aged 19-84 years who completed the questionnaire twice within an average of 18 days were included for analysis. Participants were in a stable clinical situation (no acute disease or participating in a training program). To determine the test-retest reliability, the Intraclass Correlation Coefficient (ICC) and Standard Error of the Measurement (SEM) was calculated between the first (T0) and second (T1) administration of the questionnaires. RESULTS An excellent agreement was found between the FitMáx©-questionnaire scores at T0 and T1, with an ICC of 0.97 (SEM 1.91) in the total study population and an ICC ranging from 0.93 to 0.98 (SEM 1.52-2.27) in the individual patient groups. CONCLUSION The FitMáx©-questionnaire proves to be reliable and stable over time to estimate CRF of patients and healthy subjects. Trial registration NTR (Netherlands Trial Register), NL8846. Registered 25 August 2020, https://trialsearch.who.int/Trial2.aspx?TrialID=NL8846.
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Affiliation(s)
- Renske Meijer
- Department of Sports and Exercise, Máxima Medical Centre (Máxima MC), Veldhoven, The Netherlands.
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.
| | - Goof Schep
- Department of Sports and Exercise, Máxima Medical Centre (Máxima MC), Veldhoven, The Netherlands
| | - Marta Regis
- Department of Mathematics and Computer Science, University of Technology, Eindhoven, The Netherlands
| | | | - Hans H C M Savelberg
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Martijn van Hooff
- Department of Sports and Exercise, Máxima Medical Centre (Máxima MC), Veldhoven, The Netherlands
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
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Characteristics of Second-Line Investigations of Middle-Aged Athletes Who Failed Preparticipation Examinations. Clin J Sport Med 2022; 32:396-400. [PMID: 34446648 DOI: 10.1097/jsm.0000000000000966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 07/22/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The role of exercise testing during preparticipation examinations (PPEs) of middle-aged athletes is uncertain. This study examined the characteristics of disqualifications after an initial PPE that includes an exercise test in competitive athletes older than 30 years. We investigated disqualification rates and reasons, second-line investigations performed, and final decisions regarding competitive sports participation. DESIGN Chart review. SETTING Sports medicine clinic. PARTICIPANTS Athletes aged >30 years that performed an exercise test as part of their annual PPE at our sports medicine clinic (n = 866). INDEPENDENT VARIABLES Age, sex, height, weight, sport type, cardiovascular risk factors, and abnormal PPE findings. MAIN OUTCOME MEASURES Additional investigations performed, approval/disqualification regarding competitive sports participation. RESULTS The initial disqualification rate of athletes was 9.8%. Three (3.6%) athletes were disqualified following questionnaire and physical examination, 19 (22.4%) because of resting electrocardiogram findings, and 65 (76.5%) following the exercise test. After additional work-up, only 5 athletes (0.4%) were ultimately found ineligible for competitive sports. From those, only 2 athletes (0.2%) were disqualified because of exercise test findings, which were episodes of supraventricular tachycardia and not ischemia-related. CONCLUSIONS The addition of an exercise test to the PPE of middle-aged athletes is of limited value. If exercise testing of older athletes is performed, arrhythmias are probably of higher significance than ST-T changes.
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Meijer R, van Hooff M, Papen-Botterhuis NE, Molenaar CJL, Regis M, Timmers T, van de Poll-Franse LV, Savelberg HHCM, Schep G. Estimating VO2peak in 18–90 Year-Old Adults: Development and Validation of the FitMáx©-Questionnaire. Int J Gen Med 2022; 15:3727-3737. [PMID: 35411174 PMCID: PMC8994663 DOI: 10.2147/ijgm.s355589] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/22/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Cardiorespiratory fitness (CRF) plays an essential role in health outcomes and quality of life. However, it is often not assessed nor estimated. Objective CRF assessment is costly, labour intensive and not widely available. Patient-reported outcome measures estimate CRF more cost-efficiently, but current questionnaires lack accuracy. The aim of this study is to develop a new self-reported questionnaire to estimate CRF. Materials and Methods The FitMáx©-questionnaire, consisting of only three questions assessing walking, stair climbing, and cycling capacity, was compared with the commonly used Duke Activity Status Index (DASI) and Veterans Specific Activity Questionnaire (VSAQ). These questionnaires were compared to peak oxygen uptake (VO2peak) as measured with cardiopulmonary exercise testing. This study included 759 cardiac, pulmonary and oncologic patients and healthy persons aged 18‒90. Results FitMáx© strongly correlated (r = 0.94 (0.92‒0.95) SEE = 4.14 mL∙kg−1∙min−1) with measured VO2peak. Bias between predicted and measured VO2peak was −0.24 (−9.23‒8.75; 95% limits of agreement) mL·kg−1·min−1. The FitMáx© scored superiorly on correlation and SEE compared with the DASI and VSAQ, r = 0.75 (0.68‒0.80) SEE = 4.62 mL∙kg−1∙min−1 and r = 0.87 (0.83‒0.90) SEE = 6.75 mL∙kg−1∙min−1, respectively. Conclusion FitMáx© is a valid and accessible questionnaire to estimate CRF expressed as VO2peak in clinical practice and shows substantial improvement compared to currently used questionnaires.
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Affiliation(s)
- Renske Meijer
- Department of Sports and Exercise, Máxima Medical Center, Veldhoven, the Netherlands
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
- Correspondence: Renske Meijer, Department of Sports and Exercise, Máxima Medical Center, Veldhoven, the Netherlands, Tel +31 40 8888 000, Email ; ;
| | - Martijn van Hooff
- Department of Sports and Exercise, Máxima Medical Center, Veldhoven, the Netherlands
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | | | | | - Marta Regis
- Academy, Máxima Medical Center, Veldhoven, the Netherlands
- Department of Mathematics and Computer Science, University of Technology, Eindhoven, the Netherlands
| | - Thomas Timmers
- Department of Research & Development, Interactive Studios, Rosmalen, the Netherlands
| | - Lonneke V van de Poll-Franse
- Department of Research and Development, Netherlands Comprehensive Cancer Organization, Utrecht, the Net
herlands
- Division of Psychosocial Research & Epidemiology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Department of Medical and Clinical Psychology, Tilburg University, Tilburg, the Netherlands
| | - Hans H C M Savelberg
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | - Goof Schep
- Department of Sports and Exercise, Máxima Medical Center, Veldhoven, the Netherlands
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Cohen A, Selton-Suty C, Danchin N. A tribute to Yves Juillière, MD, PhD (1957 to 2021). Arch Cardiovasc Dis 2021. [PMID: 33972175 DOI: 10.1016/j.acvd.2021.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ariel Cohen
- Saint-Antoine and Tenon Hospitals, AP-HP, INSERM UMRS-ICAN 1166 Sorbonne Université and French society of cardiology 2020-2022 President, 184, rue du Faubourg Saint-Antoine, 75012 Paris, France.
| | - Christine Selton-Suty
- Department of cardiology, Centre hospitalier régional universitaire de Nancy, 54511 Vandœuvre-Lès-Nancy, France
| | - Nicolas Danchin
- Department of cardiology, Hôpital européen Georges-Pompidou, Paris, France
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Leischik R, Dworrak B, Strauss M, Horlitz M, Pareja-Galeano H, de la Guía-Galipienso F, Lippi G, Lavie CJ, Perez MV, Sanchis-Gomar F. Special Article - Exercise-induced right ventricular injury or arrhythmogenic cardiomyopathy (ACM): The bright side and the dark side of the moon. Prog Cardiovasc Dis 2020; 63:671-681. [PMID: 32224113 DOI: 10.1016/j.pcad.2020.03.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 03/22/2020] [Indexed: 02/06/2023]
Abstract
There is still debate on the range of normal physiologic changes of the right ventricle or ventricular (RV) function in athletes. Genetic links to arrhythmogenic cardiomyopathy (ACM) are well-established. There is no current consensus on the importance of extensive exercise and exercise-induced injury to the RV. During the intensive exercise of endurance sports, the cardiac structures adapt to athletic load over time. Some athletes develop RV cardiomyopathy possibly caused by genetic predisposition, whilst others develop arrhythmias from the RV. Endurance sports lead to increased volume and pressure load in both ventricles and increased myocardial mass. The extent of volume increase and changes in myocardial structure contribute to impairment of RV function and pose a challenge in cardiovascular sports medicine. Genetic predisposition to ACM may play an important role in the risk of sudden cardiac death of athletes. In this review, we discuss and evaluate existing results and opinions. Intensive training in competitive dynamic/power and endurance sports leads to specific RV adaptation, but physiological adaptation without genetic predisposition does not necessarily lead to severe complications in endurance sports. Discriminating between physiological adaptation and pathological form of ACM or RV impairment provoked by reinforced exercise presents a challenge to clinical sports cardiologists.
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Affiliation(s)
- Roman Leischik
- Department of Cardiology, Section Prevention and Sports Medicine, School of Medicine, Faculty of Health, Witten/Herdecke University, 58095 Witten, Germany.
| | - Birgit Dworrak
- Department of Cardiology, Section Prevention and Sports Medicine, School of Medicine, Faculty of Health, Witten/Herdecke University, 58095 Witten, Germany
| | - Marcus Strauss
- Department of Cardiology I - Coronary and Peripheral Vascular Disease, Heart Failure Medicine, University Hospital Muenster, Cardiol, 48149 Muenster, Germany
| | - Mark Horlitz
- Department of Cardiology, Section Prevention and Sports Medicine, School of Medicine, Faculty of Health, Witten/Herdecke University, 58095 Witten, Germany
| | - Helios Pareja-Galeano
- Facultad de Ciencias del Deporte y Fisioterapia, Universidad Europea, 28670 Madrid, Spain
| | - Fernando de la Guía-Galipienso
- Cardiology Service of Marina Baixa Hospital, Alicante, Spain; REMA Sports Cardiology Clinic, 03700 Denia, Alicante, Spain
| | - Giuseppe Lippi
- Section of Clinical Biochemistry, University of Verona, 37134 Verona, Italy
| | - Carl J Lavie
- John Ochsner Heart and Vascular Institute, Ochsner Clinical School, The University of Queensland School of Medicine, 70121 New Orleans, LA, USA
| | - Marco V Perez
- Division of Cardiovascular Medicine, Stanford University School of Medicine, 94305-5110 Stanford, CA, USA
| | - Fabian Sanchis-Gomar
- Division of Cardiovascular Medicine, Stanford University School of Medicine, 94305-5110 Stanford, CA, USA; Department of Physiology, Faculty of Medicine, University of Valencia and INCLIVA Biomedical Research Institute, 46010 Valencia, Spain.
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7
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Ermolao A, Gasperetti A, Rigon A, Patti A, Battista F, Frigo AC, Duregon F, Zaccaria M, Bergamin M, Neunhaeuserer D. Comparison of cardiovascular screening guidelines for middle-aged/older adults. Scand J Med Sci Sports 2019; 29:1375-1382. [PMID: 31059145 DOI: 10.1111/sms.13457] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 03/11/2019] [Accepted: 04/24/2019] [Indexed: 12/21/2022]
Abstract
PURPOSE Although both European (EACPR) and American (ACSM) Scientific Societies have devised cardiovascular protocols for the assessment of "middle-aged/older" individuals who are about to participate in sports or physical exercise, there are no data regarding the guidelines' sensitivity of these measures. The aim of this study was to compare the outcomes of different international screening protocols. METHODS This observational cross-sectional study evaluated 525 subjects (80% males; median age 50 [35-85] years) seeking medical certification before participating in sports or regular exercise. The screening protocol consisted in completing a personal history profile, a physical examination, a resting ECG, a maximal exercise test, and, when required, additional instrumental evaluations. The effectiveness of the current EACPR as well as the former and new ACSM guidelines was thereby analyzed. RESULTS The full screening protocol uncovered 100 previously undetected cardiovascular conditions (main pathologies detected: 21 coronary artery disease (CAD), 14 arterial hypertension, 38 complex arrhythmias). When the European guideline was used, 49% of these conditions went undetected, including 10 CAD. When the former American guideline was used, 29% (6 CAD) went undetected; when the recently updated edition was used, 50% including 11 CAD went undetected. CONCLUSION The former ACSM guideline demonstrated a higher diagnostic sensitivity than the newer version and the EACPR guideline. Current screening protocols might be adapted for subjects performing high-intensity exercise due to their higher risk for cardiovascular and exercise-associated adverse events. The use of an incremental ECG-monitored maximal exercise test seems to improve these screening outcomes.
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Affiliation(s)
- Andrea Ermolao
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
| | - Andrea Gasperetti
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
| | - Alberto Rigon
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
| | - Alessandro Patti
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
| | - Francesca Battista
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
| | - Anna Chiara Frigo
- Department of Cardiac, Thoracic and Vascular Sciences, Biostatistics, Epidemiology and Public Health Unit, University of Padova, Padova, Italy
| | - Federica Duregon
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
| | - Marco Zaccaria
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
| | - Marco Bergamin
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
| | - Daniel Neunhaeuserer
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, Padova, Italy
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Chevalier L, Doutreleau S, Carré F, Sosner P, Abbot M, Jaussaud J. Awareness and education about cardiovascular events and sport are essential: Results of a French multicenter survey. Sci Sports 2018. [DOI: 10.1016/j.scispo.2018.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Chevalier L, Guy JM, Doutreleau S. [Place of the exercise stress test at the sportsman]. Ann Cardiol Angeiol (Paris) 2018; 67:361-364. [PMID: 30301545 DOI: 10.1016/j.ancard.2018.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 08/23/2018] [Indexed: 06/08/2023]
Abstract
Is the stress test still part of the useful examinations in the detection of risk heart disease in sports subjects? Should we continue to use it as a surveillance examination in coronary sports patients? Meta-analysis, considering a ST subshift of more than 1mm as a criterion for positivity, underline the low prevalence of abnormal examinations and a significant rate of false-positives. But for the diagnosis of coronary artery disease, it is mainly the evolution of the ST segment to effort or recovery and the occurrence of stress arrhythmias that detect true positivity. When coronary risk is more important (presence of risk factors, resumption of sport, intense and prolonged efforts), it seems lawful to recommend such a review on a regular basis among men over 40 years of age with two risk factors but Also among veterans taking up sport after a period of prolonged inactivity. For the asymptomatic coronary athlete the stress test remains at the centre of the final decision for the resumption of a sport in competition irrespective of the method of revascularization. Of course the stress test, even inevitable, remains flawed in the detection of coronary artery disease in the asymptomatic athlete. However, it provides additional information on the condition of being maximal, and attaching importance to arrhythmias, the tensional profile and the maximum power developed in addition to the ST segment's only study.
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Affiliation(s)
- L Chevalier
- Clinique du sport, 33370 Bordeaux-Mérignac, France
| | - J M Guy
- Center de réadaptation cardiorespiratoire de la loire, 33370 Saint-Priest-en-Jarez, France.
| | - S Doutreleau
- Service de médecine du sport et explorations fonctionnelles, CHU, 33370 Grenoble, France
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Iragorri N, Spackman E. Assessing the value of screening tools: reviewing the challenges and opportunities of cost-effectiveness analysis. Public Health Rev 2018; 39:17. [PMID: 30009081 PMCID: PMC6043991 DOI: 10.1186/s40985-018-0093-8] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 04/04/2018] [Indexed: 12/29/2022] Open
Abstract
Background Screening is an important part of preventive medicine. Ideally, screening tools identify patients early enough to provide treatment and avoid or reduce symptoms and other consequences, improving health outcomes of the population at a reasonable cost. Cost-effectiveness analyses combine the expected benefits and costs of interventions and can be used to assess the value of screening tools. Objective This review seeks to evaluate the latest cost-effectiveness analyses on screening tools to identify the current challenges encountered and potential methods to overcome them. Methods A systematic literature search of EMBASE and MEDLINE identified cost-effectiveness analyses of screening tools published in 2017. Data extracted included the population, disease, screening tools, comparators, perspective, time horizon, discounting, and outcomes. Challenges and methodological suggestions were narratively synthesized. Results Four key categories were identified: screening pathways, pre-symptomatic disease, treatment outcomes, and non-health benefits. Not all studies included treatment outcomes; 15 studies (22%) did not include treatment following diagnosis. Quality-adjusted life years were used by 35 (51.4%) as the main outcome. Studies that undertook a societal perspective did not report non-health benefits and costs consistently. Two important challenges identified were (i) estimating the sojourn time, i.e., the time between when a patient can be identified by screening tests and when they would have been identified due to symptoms, and (ii) estimating the treatment effect and progression rates of patients identified early. Conclusions To capture all important costs and outcomes of a screening tool, screening pathways should be modeled including patient treatment. Also, false positive and false negative patients are likely to have important costs and consequences and should be included in the analysis. As these patients are difficult to identify in regular data sources, common treatment patterns should be used to determine how these patients are likely to be treated. It is important that assumptions are clearly indicated and that the consequences of these assumptions are tested in sensitivity analyses, particularly the assumptions of independence of consecutive tests and the level of patient and provider compliance to guidelines and sojourn times. As data is rarely available regarding the progression of undiagnosed patients, extrapolation from diagnosed patients may be necessary.
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Affiliation(s)
- Nicolas Iragorri
- 1Department of Community Health Sciences and O'Brien Institute for Public Health, University of Calgary, Teaching, Research and Wellness Building, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6 Canada.,2Health Technology Assessment Unit, University of Calgary, Teaching, Research and Wellness Building, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6 Canada
| | - Eldon Spackman
- 1Department of Community Health Sciences and O'Brien Institute for Public Health, University of Calgary, Teaching, Research and Wellness Building, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6 Canada.,2Health Technology Assessment Unit, University of Calgary, Teaching, Research and Wellness Building, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6 Canada
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