Dr Jan Poloniecki is a part-time Reader in Medical Statistics in the Population Health Research Institute. His research aims to improve the safety and quality of health care through monitoring adverse outcomes, such as post-operative mortality.
Dr Poloniecki has 228 contributions documented at ISI Web of Knowledge, and for 14 years organised clinical trials in the pharmaceutical industry. He joined St George’s in 1988, initially specialising in cardiology and databasing, then epidemiology.
His current research interest in outcomes data was sparked in 1994 by John Smith, a St George’s Hospital cardiac surgeon. The Cumulative Risk-Adjusted Mortality (CRAM) chart was devised in 1995 to detect changes in death rates.
Since 1971, Dr Poloniecki has been publishing contributions to statistical methods, databases, computing, ethics and law; and work in most fields of healthcare, particularly cardiac and vascular. Since 1988 he has been researching at St. George's first with Cardiological Sciences and now with the Outcomes Research group at the Vascular Institute, St. George's. In the past he has provided statistical consultancy to R&D in the NHS Trust in addition to mortality monitoring. Before that he was for 12 years a statistician and clinical trials manager in the pharmaceutical industry.
The Mortality Monitoring Group established in 2002 still routinely monitors all deaths at the trust. Death rates for all St George’s University Hospitals NHS Foundation Trust specialties were for a time published on the hospital's website . This work received the Health Services Journal award 2004 for mortality monitoring.
A safety plot was proposed in 2007 for comparing hospitals against the standard of twice the national average death rate, using Hospital Episode Statistics (HES) data.
Risk-adjusted process control was developed for length of stay in hospital, as a continuous outcome variable, using HES data. Grouping patients by specialty, or any other way, length of stay can be compared with risk-adjustment for diagnosis, procedure and other factors. A specialty with longer risk-adjusted length of stay compared with the same specialty in other hospitals can be identified.
Dr Poloniecki was elected Governor of St. George's NHS Healthcare Trust in preparation for its becoming a Foundation Trust in 2015.
Karthikesalingam A., Holt P.J.E., Patterson B.O., Vidal-Diez A., Sollazzo G., Poloniecki J.D., Hinchliffe R.J., Thompson M.M.. Elective Open Suprarenal Aneurysm Repair in England from 2000 to 2010 an Observational Study of Hospital Episode Statistics. PLoS ONE [Internet]. 23 May 2013 8(5):
Sinha S., Hofman D., Stoker D.L., Friend P.J., Poloniecki J.D., Thompson M.M., Holt P.J.E.. Epidemiological study of provision of cholecystectomy in England from 2000 to 2009: Retrospective analysis of Hospital Episode Statistics. Surg. Endosc. Interv. Tech. [Internet]. January 2013 27(1):162-175.
Moxey P.W., Hofman D., Hinchliffe R.J., Poloniecki J., Loftus I.M., Thompson M.M., Holt P.J.. Volume-outcome relationships in lower extremity arterial bypass surgery. Ann. Surg. [Internet]. December 2012 256(6):1102-1107.
Moxey P.W., Hofman D., Hinchliffe R.J., Poloniecki J., Loftus I.M., Thompson M.M., Holt P.J.. Delay influences outcome after lower limb major amputation. Eur. J. Vasc. Endovasc. Surg. [Internet]. November 2012 44(5):485-490.
Nimako K., Poloniecki J., Draper A., Rahman T.. Seasonal variability and meteorological factors: Retrospective study of the incidence of pulmonary embolism from a large United Kingdom teaching hospital. Respir. Care [Internet]. 2012 57(8):1267-1272.
Nimako K., Poloniecki J., Draper A., Rahman T.. Seasonal variability in the incidence of pulmonary embolism and the relationship to meteorological factors. Am. J. Respir. Crit. Care Med. [Internet]. 01 May 2010 181(1 MeetingAbstracts):
Half of all doctors are below average. BMJ 1998; 316: 1734-1736.
Cumulative risk adjusted mortality chart for detecting changes in death rate: observational study of heart surgery. J Poloniecki, O Valencia, and P Littlejohns. BMJ 1998; 316: 1697-1700.
Retrospective cohort study of false alarm rates associated with a series of heart operations: the case for hospital mortality monitoring groups. Jan D Poloniecki, Charalambos Sismanidis, Martin Bland, and Paul Jones. BMJ. 2004;328:375-379.
Mortality control charts for comparing performance of surgical units: validation study using hospital mortality data. Paris P Tekkis, Peter McCulloch, Adrian C Steger, Irving S Benjamin, and Jan D Poloniecki. BMJ 2003; 326: 786-788.
Holt PJE, Poloniecki JD, Loftus IM, Thompson MM. Demonstrating safety through in-hospital mortality analysis following elective abdominal aortic aneurysm repair in England. Br J Surg 2008; 95(1):64-71
New legislation is required if patients are to be adequately informed of the risks of surgery. Jan Poloniecki and Deborah Bowman. International Journal of Risk and Safety in Medicine. 2003;15 3-4/2002:171-182.
Doctor Poloniecki supervises Alberto Vidal-Diez, who is a research statistician.
St George's Vascular Institute personal support £15,000 p.a. October 2011 – September 2013
Statistical process control of length of stay in hospital. St George’s University Hospitals NHS Foundation Trust Transformation Team £12,000 April-Sep 2010.
“Differences between hospital death rates following elective repair of abdominal aortic aneurysm with allowance for risk factors”. 2008. BUPA Foundation. J. Poloniecki, M. Thompson. £179,730 over two years.
Doctor Poloniecki has supervised successful MD and PhD theses in epidemiology, statistics and outcomes research from 2001 onwards.