The questionnaire also includes sections which ask respondents to rate their satisfaction and the impact of arthritis on each of these 12 areas. Apr 30, 2010 the womac pain and physical function scales satisfy all of these conditions in this sample of those awaiting hip or knee replacement. Knee injury and osteoarthritis outcome score koosdevelopment of a selfadministered outcome measure. Scoresrange from 0 least pain to 20 highest pain for pain, 0 least stiffness to 8 greatest stiffness for stiffness, 0 best function to 68 worst function for function, and 0 best health to 96 worst health for the total score. Also, womac pain score, but not womac stiffness and physical function scores was inversely correlated with years of formal education. Mar 14, 2014 the womac function subscale model performed similarly to the total score model. Summary of clinical outcome measures for sportsrelated knee injuries. Womac into arabic and to validate the arabic version of the index for tunisian patients with knee oa. Materials and methods the scale the womac oaindex9 is a selfadministered composite.
An extension of the western ontario and mcmaster universities osteoarthritis index. There are multiple versions of the aims2, such as the aims2sf. Development of the italian version of the knee injury and osteoarthritis outcome score for patients with knee injuries. Download pdf, 48kb the auscan index is a diseasespecific, tridimensional selfadministered questionnaire, for assessing health status and health outcomes in. In our study, we found the same result of mcid using roc curve by correlating womac scores to an external question. We adapted the womac for the italian language and tested its metric properties in 304 patients with symptomatic oa of the knee. There is also an index score or global score, which is most commonly calculated by summating the scores for the 3 subscales 4. Usually a sum of the scores for all three subscales gives a total womac. The authors are currently part of a multicentric study in india that is using the womac as an index of efficacy in a study on osteoarthritis. The reduced womac function scale provides an alternative which will limit the number of missing values, and hence the number of invalid womac scores.
Validation studies reliability, validity, responsiveness orthopaedic validation study. If you are unsure about how to answer a question, please give the best answer you can. Womac score is a continuos variable, so you can discard the chi square. Sep 21, 2011 the womac has been translated into spanish and validated in spain 810. Pdf validation of the shortform womac function scale. Womac is an unincorporated community in macoupin county, in the u. Each subscale is summated to a maximum score of 20, 8, and 68, respectively. The final score for the womac was determined by adding the aggregate scores for pain, stiffness, and function. Inaccuracies in individuallevel estimates and lowhigh healthrelated quality of life hrqol subgroup estimates were evident. The western ontario and mcmaster universities osteoarthritis index womac 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 western ontario and mcmaster universities arthritis index womac is. 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.
The womac index is a diseasespecific, tridimensional self administered questionnaire, for assessing health status and health outcomes in osteoarthritis of the knee andor hip. The western ontario and mcmaster universities osteoarthritis. The following questions concern the amount of pain you are currently experiencing in your knees. Western ontario and mcmaster university osteoarthritis index. 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. However, such outcomes are often missing from studies of clinical effectiveness. Womac is listed in the worlds largest and most authoritative dictionary database of abbreviations and acronyms the free dictionary. The current womac survey is comprised of 24 items divided into three subscales. Responsiveness of the womac has been reported to be good, both for the likert and the vas versions 4752. Pain 5 items, stiffness 2 items, and physical function 17 items. 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. The western ontario and mcmaster universities osteoarthritis index.
The measure was developed to evaluate clinically important, patientrelevant changes in health status resulting from. Womac and aqol data were analysed from 219 people recruited for a national populationbased study. Knee injury and osteoarthritis outcome score koos validation and comparison to the womac in total knee replacement. Looking for online definition of womac or what womac stands for. Roos em, roos hp, lohmander ls, ekdahl c, beynnon bd. A visual analog scale vas version of the womac is also available. Examination of discriminant validity showed that the scores on the womac and sf36 followed hypothesized patterns. 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. The womac pain and physical function scales satisfy all of these conditions in this sample of those awaiting hip or knee replacement. The womac western ontario and mcmaster universities index of.
Translation, adaptation and validation of the western ontario. 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. A post office called womac was established in 1888, and remained in operation until it was discontinued in 1910. For each situation, please enter the amount of pain you have experienced in the past 48 hours. Translation, adaptation and validation of the western. 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. This produces a reported womac score of between 0 worst to 100 best. Comparison of the womac western ontario and mcmaster. The measure was developed to evaluate clinically important, patient. 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. To determine whether assessment of quality of life aqol utility scores can be reliably estimated from western ontario and mcmaster universities osteoarthritis index womac scores in people with hip and knee joint disease arthritis or osteoarthritis.
Hip disability and osteoarthritis outcome score womac. 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. The following is the table of contents from the womac 3. Orthopaedic scores website to help clinicians and patients to gauge progress of the healing of certain treatments. Validation of a proposed womac short form for patients. Womac score definition of womac score by medical dictionary. Mar 12, 2014 economic evaluation typically is conducted using health state utilities to estimate treatment benefits. Validation of a proposed womac short form for patients with. A retrospective cohort consisting of 2589 patients undergoing a primary tka were identified from an established arthroplasty database.
The questions on the womac are a subset of the questions of the hip disability and osteoarthritis outcome score hoos. 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. Higher scores represent worse pain, stiffness, and functional limitations. The final scores for the long and short womac versions were determined by adding the aggregate scores for pain and function separately, and standardizing them to a range of values from 0 to 100, with 0 representing the best health status possible and 100 the worst. 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. Summary of clinical outcome measures for sportsrelated knee. Pdf this study validates the shortform womac function scale for.
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. In sections a, b, and c, questions will be asked about your hip or knee pain. The western ontario and mcmaster universities osteoarthritis index womac is a widely used, proprietary set of. Western ontario mcmaster osteoarthritis index womac. Modelling the relationship between the womac osteoarthritis. Pain was measured using a variety of scales, with womac pain scores. 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. Pdf validation of the shortform womac function scale for. Scores range from 0 to 96 for the total womac where 0 represents the best health status and 96 the worst possible status.
The womac index is a diseasespecific, tridimensional selfadministered questionnaire, for assessing health status and health outcomes in osteoarthritis of the knee andor hip. Reporting of the exact method used in administering the womac pain subscale scoring was poor in many cases. Knee injury and osteoarthritis outcome score koosvalidation of a swedish version. Measurement properties of the western ontario and mcmaster. Clinically important improvement in the womac and predictor. We expect that the translated and adapted version should suit other arab populations because of their similar language and culture. Women tended to report higher womac score than men, but this was significant only for the womac pain score women. 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. Hip and knee oa patients were included in a study validating a german version of the womac 16.
Mcmaster osteoarthritis index womac please circle the. Request further information please complete the following form to request further information. The subscale scores can vary, with pain ranging from 0 to 20 points. The index is selfadministered and assesses the three dimensions of pain, disability and joint stiffness in knee and hip osteoarthritis using a. Thus, a hoos survey may also be used to determine a womac score. Please enter your personal details first name, last name, and email address are required. The womac has also been used to assess back pain, rheumatoid arthritis, juvenile.
Exploring differential item functioning in the womac. Western ontario mcmaster university osteoarthritis index rheumatology an arthritic pain scoring system ranging from 0no paindisability to 100most severe paindisability. 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. Reliability and validity of the western ontario and. Patient demographics, western ontario and mcmaster universities osteoarthritis index womac, and short form sf 12 scores were collected preoperatively and 1 year postoperatively. This selfreport outcome instrument is available in english, german, french and persian. Clinician researchers american college of rheumatology. Womac produces one aggregate total score and scores for each of the subscales, with a higher score for each subscale indicating a worse condition. The womac measures five items for pain score range 020, two for stiffness score. To compare the metric properties and validity of german versions of the womac western ontario. The models functioned best at the midrange of aqol scores, with greater bias observed for extreme scores. Information and translations of womac in the most comprehensive dictionary definitions resource on.
Responsiveness of the electronic touch screen womac 3. The western ontario and mcmaster universities womac osteoarthritis oa index is a tested questionnaire to assess symptoms and physical functional disability in patients with oa of the knee and the hip. If the scores are normally distributed, you can use the ttest 2 groups or anova more than 2 groups. Scale scores are calculated which range from 0 best score to 10 worst score. The use and reporting of womac for the assessment of. I have tried to claculate the composite score from the three subscales. Economic evaluation typically is conducted using health state utilities to estimate treatment benefits. Selfreported outcomes of patients undergoing total hip. A womac test takes about 12 minutes, but is also available in a short form, although this has not been as extensively tested as the full version. The iccs for the subscale scores pain, stiffness, physical function and global score. Information and translations of womac in the most comprehensive dictionary definitions resource on the web. Alternatively a visual analogue scale vas may be used ranging from 0 to 10. Developed over 20 years ago, womac has been revised multiple times to its most current version, 3.
Western ontario mcmaster osteoarthritis index womac instruct. Using womac index scores and personal characteristics to. Western ontario and mcmaster universities osteoarthritis. Pdf validation of the shortform womac function scale for the.
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