Imperial College London

Dr Melody Zhifang Ni

Faculty of MedicineDepartment of Surgery & Cancer

Senior Research Fellow
 
 
 
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Contact

 

+44 (0)20 3312 7657z.ni

 
 
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Location

 

Queen Elizabeth the Queen Mother Wing (QEQM)St Mary's Campus

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Summary

 

Publications

Publication Type
Year
to

94 results found

Ni Z, Priest OH, Phillips LD, Hanna GBet al., 2014, Risks of using bedside tests to verify nasogastric tube position in adult patients, EMJ Gastroenterology, Vol: 3, Pages: 49-56, ISSN: 2054-6203

Journal article

Mamidanna R, Ni Z, Anderson O, Spiegelhalter D, Bottle A, Aylin P, Faiz O, Hanna Get al., 2014, Surgeon caseload and oesophagectomy, gastrectomy and pancreatectomy for cancer: a population based study, Annual Meeting of the Association-of-Upper-Gastrointestinal-Surgeons-of-Great-Britain-and-Ireland, Publisher: WILEY-BLACKWELL, Pages: 5-5, ISSN: 0007-1323

Conference paper

Mackenzie H, Miskovic D, Ni M, Coleman MG, Hanna GBet al., 2014, Predictive validity of objective technical assessment within the National Training Programme for laparoscopic colorectal surgery, Annual Meeting of the Society-of-Academic-and-Research-Surgery, Publisher: WILEY-BLACKWELL, Pages: 44-45, ISSN: 0007-1323

Conference paper

Wyles SM, Ni M, Francis N, Jenkins JT, Cecil T, Parvaiz A, Hanna GB, Coleman MGet al., 2013, Testing the trainer's training on a laparoscopic surgery "train the trainer" course, 99th Annual Clinical Congress of the American-College-of-Surgeons / 68th Annual Sessions of the Owen H Wangensteen Surgical Forum on Fundamental Surgical Problems, Publisher: ELSEVIER SCIENCE INC, Pages: S125-S125, ISSN: 1072-7515

Conference paper

Hanna GB, Amygdalos I, Ni M, Boshier PR, Mikhail S, Lloyd J, Goldin Ret al., 2013, Improving the standard of lymph node retrieval after gastric cancer surgery, HISTOPATHOLOGY, Vol: 63, Pages: 316-324, ISSN: 0309-0167

Journal article

Mackenzie H, Miskovic D, Ni M, Parvaiz A, Acheson AG, Jenkins JT, Griffith J, Coleman MG, Hanna GBet al., 2013, Clinical and educational proficiency gain of supervised laparoscopic colorectal surgical trainees, SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES, Vol: 27, Pages: 2704-2711, ISSN: 0930-2794

Journal article

Wyles SM, Miskovic D, Ni M, Coleman MG, Darzi AW, Hanna GBet al., 2013, Quantifying surgical teaching: The STTAR (Structured training trainer assessment tool), Joint Meeting of the Section-of-Surgery of the Royal-Society-of-Medicine / Annual Meeting of the Society-of-Academic-and-Research-Surgery, Publisher: WILEY-BLACKWELL, Pages: 25-25, ISSN: 0007-1323

Conference paper

Mackenzie H, Miskovic D, Ni M, Coleman M, Hanna Get al., 2013, The importance of case selection in the English National Training Programme for laparoscopic colorectal surgery (LAPCO), Joint Meeting of the Section-of-Surgery of the Royal-Society-of-Medicine / Annual Meeting of the Society-of-Academic-and-Research-Surgery, Publisher: WILEY-BLACKWELL, Pages: 26-26, ISSN: 0007-1323

Conference paper

Amygdalos I, Boshier PR, Ni M, Mikhail S, Lloyd J, Goldin R, Hanna GBet al., 2013, Improving the standard of lymph node retrieval after gastric cancer surgery, Joint Meeting of the Section-of-Surgery of the Royal-Society-of-Medicine / Annual Meeting of the Society-of-Academic-and-Research-Surgery, Publisher: WILEY-BLACKWELL, Pages: 49-49, ISSN: 0007-1323

Conference paper

Miskovic D, Ni M, Wyles SM, Kennedy RH, Francis NK, Parvaiz A, Cunningham C, Rockall TA, Gudgeon AM, Coleman MG, Hanna GBet al., 2013, Is Competency Assessment at the Specialist Level Achievable? <i>A Study for the National Training Programme in Laparoscopic Colorectal Surgery in England</i>, ANNALS OF SURGERY, Vol: 257, Pages: 476-482, ISSN: 0003-4932

Journal article

Miskovic D, Ni M, Wyles SM, Tekkis P, Hanna GBet al., 2012, Learning Curve and Case Selection in Laparoscopic Colorectal Surgery: Systematic Review and International Multicenter Analysis of 4852 Cases, DISEASES OF THE COLON & RECTUM, Vol: 55, Pages: 1300-1310, ISSN: 0012-3706

Journal article

Wyles SM, Miskovic D, Ni M, Coleman MG, Valori R, Darzi AW, Hanna GBet al., 2012, Validation and implementation of the mini-Structured Training Trainer Assessment Report (mini-STTAR), 98th Annual Clinical Congress of the American-College-of-Surgeons/67th Annual Sessions of the Owen H Wangensteen Forum on Fundamental Surgical Problems, Publisher: ELSEVIER SCIENCE INC, Pages: S117-S117, ISSN: 1072-7515

Conference paper

Wyles SM, Miskovic D, Ni M, Kennedy RH, Hanna GB, Coleman MGet al., 2012, 'Trainee' evaluation of the English National Training Programme for laparoscopic colorectal surgery, COLORECTAL DISEASE, Vol: 14, Pages: E352-E357, ISSN: 1462-8910

Journal article

Miskovic D, Ni M, Wyles SM, Parvaiz A, Hanna GBet al., 2012, Observational clinical human reliability analysis (OCHRA) for competency assessment in laparoscopic colorectal surgery at the specialist level, SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES, Vol: 26, Pages: 796-803, ISSN: 0930-2794

Journal article

Wyles S, Ni M, Valori R, Hanna G, Coleman Met al., 2012, Training a training programme trainers how to train trainees in laparoscopic colorectal surgery, International Surgical Congress of the Association-of-Surgeons-of-Great-Britain-and-Ireland (ASGBI), Publisher: WILEY-BLACKWELL, Pages: 132-132, ISSN: 0007-1323

Conference paper

Lai CW, Ni ZF, McCullough P, Coleman Met al., 2012, Laparoscopic camera lens contamination: impact on surgical time and cost, International Surgical Congress of the Association-of-Surgeons-of-Great-Britain-and-Ireland (ASGBI), Publisher: WILEY-BLACKWELL, Pages: 165-166, ISSN: 0007-1323

Conference paper

Ni M, Priest O, Olsen S, Phillips L, Hanna Get al., 2011, Re: Checking placement of nasogastric feeding tubes in adults (interpretation of x ray images): summary of a safety report from the National Patient Safety Agency: comments on the evidence and decision making, BMJ

Journal article

Anderson O, Ni Z, Moller H, Coupland VH, Davies EA, Allum WH, Hanna GBet al., 2011, Hospital volume and survival in oesophagectomy and gastrectomy for cancer, EUROPEAN JOURNAL OF CANCER, Vol: 47, Pages: 2408-2414, ISSN: 0959-8049

Journal article

Anderson O, Afolayan JO, Ni Z, Bates Tet al., 2011, Surgical versus general practitioner assessment: diagnostic accuracy in two-week wait colorectal cancer referrals., Colorectal Disease. 2011, Vol: In press

Journal article

Wyles SM, Miskovic D, Ni M, Valori R, Hanna GBet al., 2011, Reversing the role of assessor: development of the mini-structured training trainer assessment report (mini-STTAR), International Surgical Congress of the Association-of-Surgeons-of-Great-Britain-and-Ireland, Publisher: WILEY-BLACKWELL, Pages: 127-128, ISSN: 0007-1323

Conference paper

Wyles SM, Miskovic D, Ni M, Valori R, Hanna GBet al., 2011, "Natural born trainers?" Development of the structured training trainer assessment report (STTAR), International Surgical Congress of the Association-of-Surgeons-of-Great-Britain-and-Ireland, Publisher: WILEY-BLACKWELL, Pages: 127-127, ISSN: 0007-1323

Conference paper

Wyles SM, Miskovic D, Ni Z, Acheson AG, Maxwell-Armstrong C, Longman R, Cecil T, Coleman MG, Horgan AF, Hanna GBet al., 2011, Analysis of laboratory-based laparoscopic colorectal surgery workshops within the English National Training Programme, SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES, Vol: 25, Pages: 1559-1566, ISSN: 0930-2794

Journal article

Ni Z, Phillips LD, Hanna GB, 2011, Evidence Synthesis Using Bayesian Belief Networks, Evidence Synthesis in Healthcare, Editors: Darzi, Publisher: Springer Verlag, Pages: 155-168, ISBN: 9780857291752

&quot;Evidence Synthesis in Healthcare - a Bayesian belief networks (BBNs) are graphical tools for reasoning with uncertainties. In BBNs, uncertain events are represented as nodes and their relationships as links, with missing links indicating conditional independence. BBNs perform belief updating when new information becomes available; they can handle incomplete information and capture expert judgments along with data. BBNs provide a normative framework for synthesizing uncertain evidence.

Book chapter

Ni Z, Phillips LD, Hanna GB, 2011, Exploring Bayesian Belief Networks Using Netica®, Evidence Synthesis in Healthcare, Editors: Darzi, Publisher: Springer Verlag, Pages: 293-318, ISBN: 9780857291752

Bayesian belief networks (BBNs) are graphical tools for reasoning with uncertainties (see Chap. 7). They can be used to combine expert knowledge with hard data and making sense of uncertain evidence. The computation of Bayesian inference is complex. In this chapter, we provide a step-to-step guide of how to construct and use Bayesian networks by using Netica software.

Book chapter

Anderson O, Afolayan JO, Ni Z, Bates Tet al., 2011, Surgical versus general practitioner assessment: diagnostic accuracy in two week wait colorectal cancer referrals (article summary), MD Linx

Journal article

Miskovic D, Wyles SM, Ni M, Darzi AW, Hanna GBet al., 2011, Systematic Review on Mentoring and Simulation in Laparoscopic Colorectal Surgery (vol 252, pg 943, 2010), ANNALS OF SURGERY, Vol: 253, Pages: 384-384, ISSN: 0003-4932

Journal article

Ni Z, Phillips LD, Hanna GH, 2010, The Use of Bayesian Networks in Decision-Making, Key topics in surgical research and methodology, Editors: Athanasiou, Debas, Darzi, Berlin Heidelberg, Publisher: Springer, Pages: 351-360

Bayesian networks (BNs) are graphical tools of reasoning with uncertainties. In recent years,BNs have been increasingly recognized for their capacity to represent probabilistic dependencies explicitly and intuitively, handle incomplete information, and capture expert judgments along with hard data. In this chapter, we examine the underlying logic of BNs and discuss their applications.

Book chapter

Miskovic D, Wyles SM, Ni M, Darzi AW, Hanna GBet al., 2010, Systematic Review on Mentoring and Simulation in Laparoscopic Colorectal Surgery, ANNALS OF SURGERY, Vol: 252, Pages: 943-951, ISSN: 0003-4932

Journal article

Ni Z, 2010, Contrast effects on sequence assessments - a thesis, London School of Economics

Loewenstein and his colleagues found divergent preferences for outcomes assessed in isolation versus those embedded in a sequence, i.e. discounting isolated future outcomes versus preferences for increasing and constant sequences. They also found long intervals (i.e. the difference between time delays) rather than long time delays (i.e. the temporal distance from the present) had a detrimental effect on preference for improvement. This thesis proposes a descriptive model of sequence preferences, namely the contrasts model, which acknowledges the difference between interval and delay. The idea is that delay and interval are two different kinds of variables. Delay is non-relational and describes characteristics of individual outcomes, whereas interval is relational and describes characteristics of outcomes in relation to one another. Built on this idea, the contrasts model assumes that the value of a sequence consists of a non-relational part (the endowment value), which is a function of delay and nominal value of the component outcomes and a relational part (the contrast value), which is a function of the signed value difference between the outcomes, their interval and domain relatedness (i.e. whether or not the outcomes share the same domain). Delay and interval influence the endowment and the contrast respectively. Empirical investigations provide evidence for the contrasts model. Decision makers are capable of distinguishing between influences of delay and interval even when the two coincide and exert conflicting influences. Experiments using both money and non-monetary outcomes also show that preferences for improvement can be made more pronounced by shortening intervals and/or enhancing relatedness between the outcomes.

Report

Rao C, Aziz O, Deeba S, Chow A, Jones C, Ni Z, Papastavrou L, Rahman S, Darzi A, Athanasiou Tet al., 2008, Is minimally invasive harvesting of the great saphenous vein for coronary artery bypass surgery a cost-effective technique?, JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY, Vol: 135, Pages: 809-815, ISSN: 0022-5223

Journal article

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