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A number of scales are available to diagnose PTS, but there is a strong need for standardization. The Villalta scale was chosen as the standardized PTS scale. The Villalta scale has been validated in several studies and shows good correlation with generic and disease-specific quality of life scales. The inter-observer rate between study nurses and physicians was shown to be very good. Furthermore, the scale shows good discriminative properties among the different severity groups of PTS. The Villalta scale is useful for use in randomized controlled trials and it allows pooling of data from different studies. The Villalta scale should undergo further validation on intra-rater reliability. Ongoing randomized controlled trials will further validate the Villalta scale for use in PTS.<\/jats:p>","DOI":"10.1258\/phleb.2011.012s02","type":"journal-article","created":{"date-parts":[[2012,2,6]],"date-time":"2012-02-06T07:55:55Z","timestamp":1328514955000},"page":"130-135","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":42,"title":["Viilaita Scale: Goals and Limitations"],"prefix":"10.1177","volume":"27","author":[{"given":"R H W","family":"Strijkers","sequence":"first","affiliation":[{"name":"Department of Surgery, Maastricht University Medical Centre"},{"name":"Cardiovascular Research Institute Maastricht (CARIM), Maastricht, Limburg, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C H A","family":"Wittens","sequence":"additional","affiliation":[{"name":"Department of Surgery, Maastricht University Medical Centre"},{"name":"Department of Vascular Surgery, University Hospital RWTH Aachen, Nordrhein-Westfalen, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S R","family":"Kahn","sequence":"additional","affiliation":[{"name":"Division of Internal Medicine and Centre for Clinical Epidemiology and Community Studies, Jewish General Hospital and Department of Medicine, McGill University, Montreal, Quebec, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2012,3]]},"reference":[{"key":"e_1_3_1_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11239-009-0309-3"},{"key":"e_1_3_1_3_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1538-7836.2008.03002.x"},{"key":"e_1_3_1_4_2","doi-asserted-by":"publisher","DOI":"10.7326\/0003-4819-125-1-199607010-00001"},{"key":"e_1_3_1_5_2","doi-asserted-by":"publisher","DOI":"10.1177\/1358836X9900400101"},{"key":"e_1_3_1_6_2","doi-asserted-by":"publisher","DOI":"10.1067\/mva.2001.113308"},{"key":"e_1_3_1_7_2","doi-asserted-by":"publisher","DOI":"10.1001\/archinte.164.1.17"},{"key":"e_1_3_1_8_2","first-page":"83","article-title":"Chronic venous disorders of the leg: epidemiology, outcomes, diagnosis and management. 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