{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T09:24:16Z","timestamp":1762507456291,"version":"3.40.5"},"reference-count":23,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2018,7,4]],"date-time":"2018-07-04T00:00:00Z","timestamp":1530662400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100006044","name":"Astellas Pharma Europe","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100006044","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Neurourology and Urodynamics"],"published-print":{"date-parts":[[2018,11]]},"abstract":"<jats:sec><jats:title>Aims<\/jats:title><jats:p>To test the significance of association between a validated index of detrusor contractility, <jats:italic>v<\/jats:italic><jats:sub>CE<\/jats:sub>, the Watts Factor, and the Detrusor Contractility Parameter, <jats:italic>t<\/jats:italic><jats:sub>20\u201080<\/jats:sub>; and to test whether <jats:italic>t<\/jats:italic><jats:sub>20\u201080<\/jats:sub> depends on outflow tract resistance as indicated by Bladder Outlet Obstruction Index (BOOI).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Thirty\u2010seven pressure\u2010flow traces from 20 male and 17 female patients were analyzed and forms of the Watts Factor, <jats:italic>t<\/jats:italic><jats:sub>20\u201080<\/jats:sub> and BOOI were compared with <jats:italic>v<\/jats:italic><jats:sub>CE<\/jats:sub>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The Detrusor Contractility Parameter, <jats:italic>t<\/jats:italic><jats:sub>20\u201080<\/jats:sub>, is significantly associated with <jats:italic>v<\/jats:italic><jats:sub>CE<\/jats:sub> for both women and men without a high degree of bladder outlet obstruction. The Watts Factor only had a significant association with <jats:italic>v<\/jats:italic><jats:sub>CE<\/jats:sub> at the point of maximum flow in women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The Detrusor Contractility Parameter (DCP) (<jats:italic>t<\/jats:italic><jats:sub>20\u201080<\/jats:sub>), can be measured easily from the pressure flow curves of a urodynamic test. The Watts Factor at maximum urine flow, WF<jats:sub>Qmax<\/jats:sub>, can be readily calculated, but is only applicable to women. In both women and men without a high degree of bladder outlet obstruction, DCP is better associated with true detrusor contractility than any Watts Factor analysis.<\/jats:p><\/jats:sec>","DOI":"10.1002\/nau.23745","type":"journal-article","created":{"date-parts":[[2018,7,5]],"date-time":"2018-07-05T05:50:00Z","timestamp":1530769800000},"page":"2745-2752","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["The calculation and comparison of the Detrusor Contractility Parameter and Watts Factor"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5546-357X","authenticated-orcid":false,"given":"Andrew","family":"Gammie","sequence":"first","affiliation":[{"name":"Bristol Urological Institute Southmead Hospital Bristol UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Darryl","family":"Kitney","sequence":"additional","affiliation":[{"name":"School of Physiology, 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