{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T03:51:07Z","timestamp":1780458667960,"version":"3.54.1"},"reference-count":8,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2023,2,26]],"date-time":"2023-02-26T00:00:00Z","timestamp":1677369600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Perit Dial Int"],"published-print":{"date-parts":[[2023,9]]},"abstract":"<jats:p>Recently, we validated a simple method for estimating peritoneal dialysis (PD) peritonitis rate. Despite good agreement between estimates and gold-standard measurements in two large dialysis registries, the International Society of Peritoneal Dialysis (ISPD) was hesitant to recommend adoption of the estimating equation. Their perception is that inaccuracies, as small as they are, might still be detrimental to clinical decision-making. In this study, we apply new analyses to the original validation data sets. We quantify agreement using standards from the International Organization for Standardization (ISO). We also identify a subset of centres with poorest performance of the estimating equation and qualitatively assess the potential for compromised clinical decision-making associated with its use. Inter-assay % coefficient of variation between estimates and measurements was 4.2% in the Australia and New Zealand Dialysis and Transplant Registry and 4.6% in Le Registre de Dialyse P\u00e9riton\u00e9ale de Langue Fran\u00e7aise, easily meeting ISO requirements. Mandel\u2019s h values and Grubb\u2019s tests confirmed more outlying estimates compared to the measurements, while Mandel\u2019s k values and Cochran\u2019s C tests showed that identical precision by the two methods. Misclassification of centres as being above versus below the ISPD standard of 0.4 episodes\/patient-year occurred only with rates close to the threshold, affecting approximately 3% of patient-years. In the 26 (out of 268) centres with poorest performance of the estimating equation, examination of the time series of their annual PD peritonitis rate estimates\/measurements showed that using estimates would not detrimental to clinical decision-making. In conclusion, the estimating equation is sufficiently accurate for routine clinical use.<\/jats:p>","DOI":"10.1177\/08968608231154156","type":"journal-article","created":{"date-parts":[[2023,2,27]],"date-time":"2023-02-27T02:16:52Z","timestamp":1677464212000},"page":"411-416","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Simplified calculation of peritoneal dialysis-associated peritonitis rate: Accuracy of a recently developed estimating equation"],"prefix":"10.1177","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0499-4527","authenticated-orcid":false,"given":"Mark R","family":"Marshall","sequence":"first","affiliation":[{"name":"Faculty of Medical and Health Sciences, University of Auckland, New Zealand"},{"name":"Department of Renal Medicine, Counties Manukau Health, Auckland, New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gerald P","family":"Waters","sequence":"additional","affiliation":[{"name":"Regional Renal Service, Waikato District Health Board, Hamilton, New Zealand"},{"name":"New Zealand Peritoneal Dialysis Registry, Hamilton, New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Verger","sequence":"additional","affiliation":[{"name":"Le Registre de Dialyse P\u00e9riton\u00e9ale de Langue Fran\u00e7aise et H\u00e9modialyse \u00e0 Domicile (RDPLF), Pontoise, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2023,2,26]]},"reference":[{"key":"bibr1-08968608231154156","doi-asserted-by":"publisher","DOI":"10.1177\/08968608221080586"},{"key":"bibr2-08968608231154156","doi-asserted-by":"publisher","DOI":"10.25796\/bdd.v4i4.63443"},{"key":"bibr3-08968608231154156","unstructured":"International Organization for Standardization. 1994. ISO 5725-1: Accuracy (trueness and precision) of measurement methods and results \u2013 Part 1: General principles and definitions, https:\/\/www.iso.org\/standard\/11833.html. (accessed 11 Feb 2023)"},{"key":"bibr4-08968608231154156","unstructured":"International Organization for Standardization. 2019. ISO 5725-2: Accuracy (trueness and precision) of measurement methods and results \u2013 Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method, https:\/\/www.iso.org\/standard\/69419.html."},{"key":"bibr5-08968608231154156","unstructured":"International Organization for Standardization. 2022. ISO\/DIS 5725-1 (draft): Accuracy (trueness and precision) of measurement methods and results \u2013 Part 1: General principles and definitions, https:\/\/www.iso.org\/standard\/69418.html."},{"key":"bibr6-08968608231154156","unstructured":"International Organization for Standardization. 1998. ISO 5725-1: Accuracy (trueness and precision) of measurement methods and results \u2013 Part 1: General principles and definitions (Technical Corrigendum 1), https:\/\/www.iso.org\/standard\/29779.html."},{"key":"bibr7-08968608231154156","doi-asserted-by":"publisher","DOI":"10.25796\/bdd.v5i3.67753"},{"key":"bibr8-08968608231154156","doi-asserted-by":"publisher","DOI":"10.1177\/0896860821996096"}],"container-title":["Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/08968608231154156","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/08968608231154156","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/08968608231154156","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T22:36:09Z","timestamp":1777674969000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/08968608231154156"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,2,26]]},"references-count":8,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2023,9]]}},"alternative-id":["10.1177\/08968608231154156"],"URL":"https:\/\/doi.org\/10.1177\/08968608231154156","relation":{},"ISSN":["0896-8608","1718-4304"],"issn-type":[{"value":"0896-8608","type":"print"},{"value":"1718-4304","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,2,26]]}}}