Womac osteoarthritis index yavapai regional medical. The current womac survey is comprised of 24 items divided into three subscales. 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. Please circle the appropriate rating for each item. The womac westren ontario and mcmaster universities index is used to. 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 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. Hip disability and osteoarthritis outcome score hoos. Standing upright none mild moderate severe extreme b. The womac is scored on a best to worst scale, so that lower subscale scores represent less pain, less stiffness, or better physical function. Womac osteoarthritis index rozina and smith physical therapy. Summary of clinical outcome measures for sportsrelated. 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. In the case of pain and womac scores, a lower score indicated improvement. Reliability and validity of the western ontario and mcmaster. 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 transition scale assessed the selfperceived change at the 6week follow up compared to baseline. The knee injury and osteoarthritis outcome score koos is a questionnaire designed to assess short and longterm patientrelevant outcomes following knee injury. Validation of the chinese western ontario and mcmaster. Patients global assessment of osteoarthritis 5point likert scale change from. 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. The scale has three subscales table 1, pain 5 items, stiffness 2 items and physical functioning 17 items. In 74% of trials the reporting of the scale used was inadequate. 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. It is a selfadministered questionnaire consisting of 24 items divided into 3 subscales. Tanezumab for the treatment of pain from osteoarthritis of. The western ontario and mcmaster universities arthritis index womac is widely used. Pain 0500 pts, stiffness 0200 pts, function 0 1700 pts composite scores can be converted to 0100 scale 0 best recall period. The pain subscale has not been consistent across studies, but it generally. To determine mcid, the womac effects were related to the transition replies.
Stiffness is a sensation of restriction or slowness in the ease with which you move your hip joint. Numerous studies have reported on its reliability and validity 79. Developed over 20 years ago, womac has been revised multiple times to its most current version, 3. Womac pain, stiffness, and function subscales all improved after 12 weeks of supplementation. Validity and reliability of swedish womac osteoarthritis index. 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. The womac pain and physical functioning subscales satisfied unidimensionality and ordinal scaling tests, and the ability to transform to an interval scale. The koos is selfadministered and assesses five outcomes. Determinants of womac function, pain and stiffness scores.
Western ontario and mcmaster universities osteoarthritis. There have also been several studies, which have raised issues about the factorial validity of the subscales 5,10. The use and reporting of womac for the assessment of. The number of different score ranges was high and only 39% of trials used the standard 096, or 02400 or 0240 ranges. 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. Womac pain score reflects preceding daily pain ratings in. Request further information please complete the following form to request further information. Index womac pain subscale score at screening on a 0100 mm vas scale.
Alternatively a visual analogue scale vas may be used ranging from 0 to 10. Think about the stiffness not pain you have in your hipknee during the last 48 hours. The womac index is a diseasespecific, tridimensional selfadministered questionnaire, for assessing health status and health outcomes in osteoarthritis of the knee andor hip. 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. The following questions concern the amount of pain you are currently experiencing in your knees. 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. Determinants of womac function, pain and stivness scores. In a small number of cases the score range specified was not interpretable. Rasch analysis of the western ontario macmaster questionnaire. This index has gained growing acceptance in oa assessment since its introduction in 1986. Womac how to score from the koos assign scores from 0 to 4 to the boxes as shown above. 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. An extension of the western ontario and mcmaster universities osteoarthritis index.
Pdf validation of the shortform womac function scale for the. After the screening visit, patients discontinued use of nsaids or pain medications prior to the baseline visit. Womac index was developed for hip and knee osteoarthritis, however it has been used with other rheumatic conditions such as. Acl anterior cruciate ligament injury, meniscus injury, chondral injury, etc. Demonstrates hypothesized relationships to other similar measures and to. Summary of basic reporting of womac pain subscale and womac index. There are multiple versions of the aims2, such as the aims2sf.
Since its development in 1982, the womac index has undergone several revisions and modifications. 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. Pain 5 items, stiffness 2 items, and physical function 17 items. Womac scale scores indicate that patients are of moderate severity on average at baseline, as expected from a hospital recruited cohort. Roos em, roos hp, lohmander ls, ekdahl c, beynnon bd. Validation of a numerical rating scale to assess functional. 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. 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. Mcmaster osteoarthritis index womac please circle the. Womac physical function subscale change from baseline to weeks 2, 4, 8, 12 and 24. Stiffness the following questions concern the amount of joint stiffness you have experienced during the last week in your hip. Clinician researchers american college of rheumatology.
The developmental form of the womac had 5 subscales pain, stiffness, physical function, social function, emotional function, the first 3 of which were retained in the original form of the womac and probed the symptom experience of oa in the. Knee injury and osteoarthritis outcome score koos koos is developed as an instrument to assess the patients opinion about their knee and associated problems. Please rate the activities in each category according to the following scale of difficulty. Pain 020 pts, stiffness 08 pts, function 068 pts vas scale. The western ontario and mcmaster universities osteoarthritis. The womac has also been used to assess back pain, rheumatoid. Summary of basic reporting of womac pain sub scale and womac index. 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 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. Reporting of the exact method used in administering the womac pain subscale scoring was poor in many cases. Four hundred and seventyfour patients with osteoarthritis of the hip or knee awaiting arthroplasty were administered the womac. 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. If you prefer percentage scores in accordance with the koos, use the formula provided below to convert the original womac scores. Knee injury and osteoarthritis outcome score koosdevelopment of a selfadministered outcome measure.
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. The multidimensional western ontario macmaster osteoarthritis index assesses pain, stiffness, and physical function activities related to oa of the hip or knee. What is the minimum clinically important difference for. Womac function, pain or stivness as the dependent in ra and most abnormal in fm, including womac variables, and low back pain, symptom count, vas scores, number of somatic symptoms and the percentage fatigue scale and depression as the independent vari with low back pain. 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. The answer is most certainly that it is and remains distinctly dynamic. Modelling the relationship between the womac osteoarthritis. Womac pain subscale change from baseline to weeks 2, 4, 8, 12 and 24. Koos is intended to be used for knee injury that can result in post traumatic osteoarthritis oa. Hip disability and osteoarthritis outcome score womac. Summary of clinical outcome measures for sportsrelated knee.
Knee injury and osteoarthritis outcome score koos validation and comparison to the womac in total knee replacement. No significant differences measured via vas pain scale. Mar 12, 2014 womac scale scores indicate that patients are of moderate severity on average at baseline, as expected from a hospital recruited cohort. Western ontario and mcmaster universities osteooarthritis. Additionally, a reduced sevenpoint womac scale has also been validated. These details will be sent to dr bellamy who will respond to your request in due course. The responsiveness was moderate to large, with srm and es ranging from 0. Koos was developed for younger andor more active patients with knee injury and knee. This study aimed to examine the correlation between womac pain score and reported. The recall period for specific outcome measures is 48 hours. For each situation, please enter the amount of pain you have experienced in the past 48 hours. The questionnaire also includes sections which ask respondents to rate their satisfaction and the impact of arthritis on each of these 12 areas. Scale scores are calculated which range from 0 best score to 10 worst score. Western ontario and mcmaster universities osteooarthritis index.
Download pdf, 48kb the auscan index is a diseasespecific, tridimensional selfadministered questionnaire, for assessing health status and health outcomes in. High correlations were observed as expected between the patient nrs and womac function, pain visual analogue scale and patient global assessment. Tanezumab for the treatment of pain from osteoarthritis of the knee. What is the minimum clinically important difference for the. 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. Request pdf measurement properties of the womac lk 3. 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. 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. 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 womac takes approximately 12 minutes to complete, and can be taken on paper, over the telephone or. The western ontario and mcmaster universities osteoarthritis index womac is applied extensively to patients with osteoarthritis of the hip or knee. 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. 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.
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