You will be asked to indicate on this type of scale the amount of pain, stiffness or disability you have experience in the last 48 hours. Determinants of womac function, pain and stivness scores. The scores for womac pain, stiffness, and physical function subscales, and total score at visit 1 for subjects in the vs population and for healthy volunteers were statistically significantly different i. The following questions concern the amount of pain you are currently experiencing in your knees. Pain 5 items, stiffness 2 items, and physical function 17 items. Rasch analysis of the western ontario macmaster questionnaire. Validation of the chinese western ontario and mcmaster. The western ontario and mcmaster universities osteoarthritis.
Request pdf measurement properties of the womac lk 3. The multidimensional western ontario macmaster osteoarthritis index assesses pain, stiffness, and physical function activities related to oa of the hip or knee. High correlations were observed as expected between the patient nrs and womac function, pain visual analogue scale and patient global assessment. Roos em, roos hp, lohmander ls, ekdahl c, beynnon bd. Developed over 20 years ago, womac has been revised multiple times to its most current version, 3. The womac is scored on a best to worst scale, so that lower subscale scores represent less pain, less stiffness, or better physical function. The womac index is a diseasespecific, tridimensional selfadministered questionnaire, for assessing health status and health outcomes in osteoarthritis of the knee andor hip. Demonstrates hypothesized relationships to other similar measures and to. It is interesting to note that the most reliable component of the womac score was the functional assessment and the total womac score, with a cronbachs alpha greater. 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 womac performed well in ra and fm, and correlated strongly with the health assessment questionnaire haq disability scale and a visual analogue scale vas pain scale. Acl anterior cruciate ligament injury, meniscus injury, chondral injury, etc. To determine mcid, the womac effects were related to the transition replies. The womac pain and physical functioning subscales satisfied unidimensionality and ordinal scaling tests, and the ability to transform to an interval scale.
Apr 30, 2010 the womac pain and physical functioning subscales satisfied unidimensionality and ordinal scaling tests, and the ability to transform to an interval scale. There are multiple versions of the aims2, such as the aims2sf. This study aimed to examine the correlation between womac pain score and reported. Womac physical function subscale change from baseline to weeks 2, 4, 8, 12 and 24. Womac index was developed for hip and knee osteoarthritis, however it has been used with other rheumatic conditions such as.
These details will be sent to dr bellamy who will respond to your request in due course. A flare in oa pain, defined as an increase of at least 15 mm in the womac pain scale from screening to baseline, was required for enrollment. Backgroundpurpose the western ontario and mcmaster universities osteoarthritis index womac is a validated and widely used instrument for assessing osteoarthritis oa knee and hip pain, stiffness and physical function. Reporting of the exact method used in administering the womac pain subscale scoring was poor in many cases. The use and reporting of womac for the assessment of. Please circle the appropriate rating for each item. Womac pain subscale change from baseline to weeks 2, 4, 8, 12 and 24. Validity and reliability of swedish womac osteoarthritis index. No significant differences measured via vas pain scale. The koos is selfadministered and assesses five outcomes. There have also been several studies, which have raised issues about the factorial validity of the subscales 5,10. Pain 020 pts, stiffness 08 pts, function 068 pts vas scale. May 30, 2003 a 40 item questionnaire hip disability and osteoarthritis outcome score, hoos was constructed to assess patientrelevant outcomes in five separate subscales pain, symptoms, activity of daily living, sport and recreation function and hip related quality of life. Knee injury and osteoarthritis outcome score koos koos is developed as an instrument to assess the patients opinion about their knee and associated problems.
The answer is most certainly that it is and remains distinctly dynamic. Summary of basic reporting of womac pain sub scale and womac index. Knee injury and osteoarthritis outcome score koos validation and comparison to the womac in total knee replacement. The recall period for specific outcome measures is 48 hours. The current womac survey is comprised of 24 items divided into three subscales. After the screening visit, patients discontinued use of nsaids or pain medications prior to the baseline visit. 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. 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 widely used in the evaluation of hip and knee osteoarthritis.
Pain rating scales instructions subjective pain score all patients are to have a functional activity score recorded in addition to the chosen subjective score. Request further information please complete the following form to request further information. P jan 23, 2012 the total womac score at the 6week followup minus the score at baseline examination prior to the treatment defined the effect measured by womac. What is the minimum clinically important difference for the. Hip disability and osteoarthritis outcome score hoos. Mcmaster osteoarthritis index womac please circle the. Some differential item functioning was observed, but this cancelled out at the test level and, by doing so, at the same time removed the disturbance of unidimensionality. Tanezumab for the treatment of pain from osteoarthritis of. The western ontario and mcmaster universities osteoarthritis index womac is applied extensively to patients with osteoarthritis of the hip or knee. In a small number of cases the score range specified was not interpretable.
Mar 12, 2014 womac scale scores indicate that patients are of moderate severity on average at baseline, as expected from a hospital recruited cohort. In 74% of trials the reporting of the scale used was inadequate. Alternatively a visual analogue scale vas may be used ranging from 0 to 10. Summary of clinical outcome measures for sportsrelated knee. Please rate the activities in each category according to the following scale of difficulty.
The womac has also been used to assess back pain, rheumatoid. Modelling the relationship between the womac osteoarthritis. Since its development in 1982, the womac index has undergone several revisions and modifications. Western ontario and mcmaster universities osteooarthritis. If you prefer percentage scores in accordance with the koos, use the formula provided below to convert the original womac scores. Koos is intended to be used for knee injury that can result in post traumatic osteoarthritis oa. Summary of clinical outcome measures for sportsrelated. This index has gained growing acceptance in oa assessment since its introduction in 1986. Visual analogue scale vas instruct the patient to point to the position on the line between the faces to indicate how much pain they are currently feeling. An extension of the western ontario and mcmaster universities osteoarthritis index. The knee injury and osteoarthritis outcome score koos is a questionnaire designed to assess short and longterm patientrelevant outcomes following knee injury. Womac pain, stiffness, and function subscales all improved after 12 weeks of supplementation.
Validation of a numerical rating scale to assess functional. The responsiveness was moderate to large, with srm and es ranging from 0. Total womac pain scale scores can vary from 0 to 500 when va3 scaling is applied and from 0 to 20 when lk3 scaling is implemented. The likert version of the womac is rated on an ordinal scale of 0 to 4, with lower scores indicating lower levels of symptoms or physical disability.
What is the minimum clinically important difference for. The questionnaire also includes sections which ask respondents to rate their satisfaction and the impact of arthritis on each of these 12 areas. Western ontario and mcmaster universities osteoarthritis. Four hundred and seventyfour patients with osteoarthritis of the hip or knee awaiting arthroplasty were administered the womac. 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. Determinants of womac function, pain and stiffness scores. There is one computerized version of the womac and four basic versions with different types of scales on which the response is scored lk 5 point likert scale, va 10 cm horizontal. For each situation, please enter the amount of pain you have experienced in the past 48 hours. The knee injury and osteoarthritis outcome score koos is an extension of the western ontario and mcmaster universities osteoarthrtis index womac, the most commonly used outcome instrument for assessment of patientrelevant treatment effects in osteoarthritis. Additionally, a reduced sevenpoint womac scale has also been validated. In the case of pain and womac scores, a lower score indicated improvement. The number of different score ranges was high and only 39% of trials used the standard 096, or 02400 or 0240 ranges. Womac scale scores indicate that patients are of moderate severity on average at baseline, as expected from a hospital recruited cohort. Think about the stiffness not pain you have in your hipknee during the last 48 hours.
The womac captures more than just knee or hip pain and dysfunction, and is clearly influenced by the presence of fatigue, symptom counts, depression and low back. Pain 0500 pts, stiffness 0200 pts, function 0 1700 pts composite scores can be converted to 0100 scale 0 best recall period. Reliability and validity of the western ontario and mcmaster. Knee injury and osteoarthritis outcome score koosdevelopment of a selfadministered outcome measure. Koos was developed for younger andor more active patients with knee injury and knee. Standing upright none mild moderate severe extreme b. The pain subscale has not been consistent across studies, but it generally. The womac takes approximately 12 minutes to complete, and can be taken on paper, over the telephone or. Tanezumab for the treatment of pain from osteoarthritis of the knee.
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. It is a selfadministered questionnaire consisting of 24 items divided into 3 subscales. Stiffness is a sensation of restriction or slowness in the ease with which you move your hip joint. Womac how to score from the koos assign scores from 0 to 4 to the boxes as shown above. Index womac pain subscale score at screening on a 0100 mm vas scale. To get original womac scores, sum the item scores for each subscale. A 40 item questionnaire hip disability and osteoarthritis outcome score, hoos was constructed to assess patientrelevant outcomes in five separate subscales pain, symptoms, activity of daily living, sport and recreation function and hip related quality of life. Stiffness the following questions concern the amount of joint stiffness you have experienced during the last week in your hip. Summary of basic reporting of womac pain subscale and womac index. Hip disability and osteoarthritis outcome score womac. Numerous studies have reported on its reliability and validity 79.
The scale has three subscales table 1, pain 5 items, stiffness 2 items and physical functioning 17 items. Clinician researchers american college of rheumatology. Pdf validation of the shortform womac function scale for the. Altogether 165 patients completed the womac, the visual analogue scale foot and ankle vas fa, the lower extremity functional scale lefs, the 15d healthrelated qualityoflife questionnaire. Authors found that the 5 items of the womac pain scale consist of functionbased behaviors that suggest disability measure attributes versus purely pain, that they are general behaviors rather than those specific to hip or knee oa e. The transition scale assessed the selfperceived change at the 6week follow up compared to baseline. Jul 26, 2016 authors found that the 5 items of the womac pain scale consist of functionbased behaviors that suggest disability measure attributes versus purely pain, that they are general behaviors rather than those specific to hip or knee oa e. Patients global assessment of osteoarthritis 5point likert scale change from.
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