To develop a formula to translate western ontario and mcmaster university osteoarthritis index womac scores collected in clinical trials of patients with osteoarthritis oa into health utilities index mark 3 hui3 utility scores for application in economic evaluation. The womac index is a diseasespecific, tridimensional selfadministered questionnaire, for assessing health status and health outcomes in osteoarthritis of the knee andor hip. Developed over 20 years ago, womac has been revised multiple times to its most current version, 3. Two componentssymptom level based on the womac osteoarthritis index. Economic evaluation typically is conducted using health state utilities to estimate treatment benefits. The koos qol score showed the highest predictive value with an auc of 0. The womac index is a diseasespecific, tridimensional self administered questionnaire, for assessing health status and health outcomes in osteoarthritis of the knee andor hip. Download pdf, 48kb the auscan index is a diseasespecific, tridimensional selfadministered questionnaire, for assessing health status and health outcomes in. Since its conception, the womac has undergone several revisions and modifications, with the latest version womac 3. As their names say, ceiling effect is highest possible score and floor effect is the opposite side. Sep 21, 2011 the womac has been translated into spanish and validated in spain 810. Increased efficacy of collagen hydrolysate versus a placebo was observed in german sites, and in the overall study population among patients. Validation of a proposed womac short form for patients. I have tried to claculate the composite score from the three subscales.
Responsiveness of the electronic touch screen womac 3. Pdf validation of the shortform womac function scale for the. Wed like to understand how you use our websites in order to improve them. Rasch analysis of the western ontario macmaster questionnaire. The following is the table of contents from the womac 3. However, such outcomes are often missing from studies of clinical effectiveness. Womac the western ontario and mcmaster universities arthritis index is a widely used, proprietary set of standardized questionnaires used by health professionals to evaluate the condition of patients with osteoarthritis of the knee and hip, including pain, stiffness, and physical functioning of the joints. The measure was developed to evaluate clinically important, patientrelevant changes in health status resulting from. For each situation, please enter the amount of pain you have experienced in the past 48 hours. Pdf comparison of the western ontario and mcmaster.
Theiler r, bischoffferrari ha, good m and bellamy n. Pdf on jul 1, 2005, pankaj jogi and others published comparison of the western ontario and mcmaster universities osteoarthritis index womac and the lower extremity functional scale lefs. The measure was developed to evaluate clinically important, patient. The following validated subjective selfadministered scores were used. A score derived from a questionnaire in which the patient answers questions regarding rheumatic symptoms, stiffness, pain and how it affects the ability to function. Translation, adaptation and validation of the western ontario. Hip disability and osteoarthritis outcome score physiopedia objective the. What womac pain score should make a patient eligible for a. Physical functioning questions cover everyday activities such as stair use, standing up from a sitting or lying position, standing, bending, walking, getting in and out of a car, shopping, putting on or taking off socks, lying in bed. Information and translations of womac in the most comprehensive dictionary definitions resource on the web.
The western ontario and mcmaster universities arthritis index womac is. The western ontario and mcmaster universities osteoarthritis. Patient demographics, western ontario and mcmaster universities osteoarthritis index womac, and short form sf 12 scores were collected preoperatively and 1 year postoperatively. Since its development in 1982, the womac index has undergone several revisions and modifications. Western ontario mcmaster university osteoarthritis index rheumatology an arthritic pain scoring system ranging from 0no paindisability to 100most severe paindisability. A post office called womac was established in 1888, and remained in operation until it was discontinued in 1910. Modelling the relationship between the womac osteoarthritis.
Validation studies reliability, validity, responsiveness orthopaedic validation study. S televiznimi porady a zdravotnimi casopisy, ktere je propaguji, nelze poprit, jejich popularitu mezi lidmi, kteri chteji zhubnout. Pdf validation of the shortform womac function scale for. We translated the original womac questionnaire into persian by the forward and backward technique, and then its psychometric study was done on 169. For these indexes, the proportion of answer frequencies with the lowest possible score in. Data from a previously published openlabel randomized controlled trial of appropriate care with hylan. Womac is an unincorporated community in macoupin county, in the u. The womac measures five items for pain score range 020, two for stiffness score range 08, and 17 for functional limitation score range 068. Patient relevant, diseasespecific, patient selfcompleted, flexible delivery, multiple language forms. A retrospective cohort consisting of 2589 patients undergoing a primary tka were identified from an established arthroplasty database. The womac pain scale consists of five items conceived to assess a single health concept and a total score is obtained by summing the item responses. Roos em, roos hp, lohmander ls, ekdahl c, beynnon bd.
Patients are asked a range of questions about their ability to carry out daily activities such. The womac oa indexis a selfadministered composite questionnaire with a. The current womac survey is comprised of 24 items divided into three subscales. This selfreport outcome instrument is available in english, german, french and persian. This has important implications when considering power studies for smaller studies, and the impact of questionnaire choice on compliance and duplication of data, as well as data completion.
Womac is listed in the worlds largest and most authoritative dictionary database of abbreviations and acronyms the free dictionary. A total womac score can also be produced and is commonly transformed to a 0100 scale for ease of interpretation and comparison with other studies. Suda m womac swafford 03 mar 1912 05 jul 2008 mcminn co. Construct validity of a 12item womac for assessment of femoro. Jan 23, 2012 the aims of the present study were first to detect mcid for womac in a moroccan population, and second, to identify the best pretreatment predictors on the change of health after treatment by nonspecific, nonsteroidal antiinflammatory drugs nsaids, and to evaluate whether the predictors were dependent on the choice of the response criterion. The womac function score is linear over the range of 25150 equivalent range on 010 scale is 1. The incredible ibex defies gravity and climbs a dam forces of nature with brian cox bbc duration. Clinically important improvement in the womac and predictor.
The index is selfadministered and assesses the three dimensions of pain, disability and joint stiffness in knee and hip osteoarthritis using a battery of 24 questions. Translation, adaptation and validation of the western ontario and. The index is selfadministered and assesses the three dimensions of pain, disability and joint stiffness in knee and hip osteoarthritis using a. The diseasespecific questionnaire, western ontario and mcmaster universities osteoarthritis index womac, is the most widely used instrument to evaluate symptomatology and function in patients with hip or knee osteoarthritis oa 15. Pdf validation of the shortform womac function scale. Western ontario and mcmaster universities osteoarthritis. The scores for each subscale are summed up, with a possible score range of 020 for pain, 08 for stiffness, and 068 for physical function. The reduced womac function scale provides an alternative which will limit the number of missing values, and hence the number of invalid womac scores. In 21 of 60 trials, deciding whether a likert scale or vas was used had to be deduced from other information given in the paperusually the score range or the actual baseline or followup data.
Plot of severity in logits versus womac functional score for oa. Please rate the activities in each category according to the following. The scores for the subscales on pain, stiffness, and disability are calculated separately. Pain was measured using a variety of scales, with womac pain scores. Predictive values of womac, koos, and sf12 score for knee. Looking for online definition of womac or what womac stands for. To illustrate the application of the sem, consider a patient who at the initial assessment reports a womac pain score of 1020, and at a subsequent assessment a score of 620. Whitehouse and associates45 introduced a reduced womac function scale. This study aims to bridge that gap by providing appropriate methods to link values from the western ontario and mcmaster universities osteoarthritis index womac to the eq5d utility instrument.
What womac pain score should make a patient eligible for a trial in knee osteoarthritis. Sep 01, 2009 a total womac score can also be produced and is commonly transformed to a 0100 scale for ease of interpretation and comparison with other studies. Information and translations of womac in the most comprehensive dictionary definitions resource on. Excluding patients whose treatments failed, the mean improvement in the 20point womac pain score and the 68point womac function score was 4. Mar 12, 2014 economic evaluation typically is conducted using health state utilities to estimate treatment benefits. Womac score definition of womac score by medical dictionary. The use and reporting of womac for the assessment of. Materials and methods the scale the womac oaindex9 is a selfadministered composite. The western ontario and mcmaster universities osteoarthritis index womac name. Validation of a proposed womac short form for patients with. Womac osteoarthritis indexadditional dimensions for use. Womac western ontario and mcmaster universities arthritis.
Mcmaster osteoarthritis index womac please circle the. Womac into arabic and to validate the arabic version of the index for tunisian patients with knee oa. Womac osteoarthritis index in italian patients with osteoarthritis of. Examination of discriminant validity showed that the scores on the womac and sf36. Very high correlations were also obtained between womac scores and lequesne oa algofunctional index. Western ontario and mcmaster university osteoarthritis index. The user guide contains information on index derivation, specific clinimetric issues, formatting, index presentation, score calculation, statistical issues and provides over 900 relevant references, the majority to previous studies employing the.
This approach would be reasonable provided the results from a factor analysis produced a single factor and the set of items displayed a high degree of internal consistency. A selfadministered questionnaire consisting of a german version of the womac with items for pain 5 items, physical function 17 items and stiffness 2 items. Knee injury and osteoarthritis outcome score koosdevelopment of a selfadministered outcome measure. The proportion of trials, for which assumptions had to be made in order to reach a conclusion regarding the type of scale and the score range used, was calculated. Usually a sum of the scores for all three subscales gives a total womac score, however there are other methods that have been used to combine scores. In 1988, bellamy and coworkers 3 first published the womac, a 24item, conditionspecific questionnaire to be used for hip and knee osteoarthritis. Western ontario and mcmaster universities osteooarthritis. The womac oa indexis a selfadministered composite questionnaire with a threedimensional measure of pain, joint. Feb 04, 2011 the incredible ibex defies gravity and climbs a dam forces of nature with brian cox bbc duration. Modelling the relationship between the womac osteoarthritis index. Translation, adaptation and validation of the western.
Reporting of the exact method used in administering the womac pain subscale scoring was poor in many cases. Less than two per cent of patients have scores greater than 150. Pain 5 items, stiffness 2 items, and physical function 17 items. The western ontario and mcmaster universities osteoarthritis index womac is a widely used measure of symptoms and physical disability originally developed for people with osteoarthritis oa of the hip andor knee 1, 2. A model to estimate health utilities index mark 3 utility. Twenty one per cent have scores less than 25 see fig 1. The following questions concern the amount of pain you are currently experiencing in your knees. We expect that the translated and adapted version should suit other arab populations because of their similar language and culture. Western ontario and mcmaster universities arthritis index.
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