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Sex differences in rates and causes of 30-day readmissions after cardiac electronic device implantations: insights from the Nationwide Readmissions Database.

Mohamed MO, Greenspon A, Van Spall H, Volgman AS, Sharma PS, Alraies MC, Kwok CS, Martin GP, Zachariah D, Patwala A, Mamas MA.

Int J Cardiol. 2019 Dec 10. pii: S0167-5273(19)35364-1. doi: 10.1016/j.ijcard.2019.12.012. [Epub ahead of print]


Effectiveness of a quality improvement collaborative in reducing time to surgery for patients requiring emergency cholecystectomy.

Bamber JR, Stephens TJ, Cromwell DA, Duncan E, Martin GP, Quiney NF, Abercrombie JF, Beckingham IJ; Cholecystectomy Quality Improvement Collaborative.

BJS Open. 2019 Oct 8;3(6):802-811. doi: 10.1002/bjs5.50221. eCollection 2019 Dec.


Harnessing the power of theorising in implementation science.

Kislov R, Pope C, Martin GP, Wilson PM.

Implement Sci. 2019 Dec 11;14(1):103. doi: 10.1186/s13012-019-0957-4.


Examining the impact of data quality and completeness of electronic health records on predictions of patients' risks of cardiovascular disease.

Li Y, Sperrin M, Martin GP, Ashcroft DM, van Staa TP.

Int J Med Inform. 2020 Jan;133:104033. doi: 10.1016/j.ijmedinf.2019.104033. Epub 2019 Nov 11.


Relation of frailty to outcomes in percutaneous coronary intervention.

Kwok CS, Achenbach S, Curzen N, Fischman DL, Savage M, Bagur R, Kontopantelis E, Martin GP, Steg PG, Mamas MA.

Cardiovasc Revasc Med. 2019 Nov 15. pii: S1553-8389(19)30752-3. doi: 10.1016/j.carrev.2019.11.009. [Epub ahead of print]


Overruling uncertainty about preventative medications: the social organisation of healthcare professionals' knowledge and practices.

Cupit C, Rankin J, Armstrong N, Martin GP.

Sociol Health Illn. 2019 Nov 21. doi: 10.1111/1467-9566.12998. [Epub ahead of print]


Trends of Sex Differences in Outcomes of Cardiac Electronic Device Implantations in the United States.

Mohamed MO, Volgman AS, Contractor T, Sharma PS, Kwok CS, Rashid M, Martin GP, Barker D, Patwala A, Mamas MA.

Can J Cardiol. 2020 Jan;36(1):69-78. doi: 10.1016/j.cjca.2019.08.012. Epub 2019 Aug 22.


Explicit causal reasoning is needed to prevent prognostic models being victims of their own success.

Sperrin M, Jenkins D, Martin GP, Peek N.

J Am Med Inform Assoc. 2019 Dec 1;26(12):1675-1676. doi: 10.1093/jamia/ocz197. No abstract available.


Apathy as a behavioural marker of cognitive impairment in Parkinson's disease: a longitudinal analysis.

Martin GP, McDonald KR, Allsop D, Diggle PJ, Leroi I.

J Neurol. 2020 Jan;267(1):214-227. doi: 10.1007/s00415-019-09538-z. Epub 2019 Oct 15.


Hospital-level evaluation of the effect of a national quality improvement programme: time-series analysis of registry data.

Stephens TJ, Peden CJ, Haines R, Grocott MPW, Murray D, Cromwell D, Johnston C, Hare S, Lourtie J, Drake S, Martin GP, Pearse RM; Enhanced Perioperative Care for High-risk patients (EPOCH) trial group.

BMJ Qual Saf. 2019 Sep 12. pii: bmjqs-2019-009537. doi: 10.1136/bmjqs-2019-009537. [Epub ahead of print]


Anti-counterfeiting DNA molecular tagging of pharmaceutical excipients: An evaluation of lactose containing tablets.

Altamimi MJ, Greenwood JC, Wolff K, Hogan ME, Lakhani A, Martin GP, Royall PG.

Int J Pharm. 2019 Nov 25;571:118656. doi: 10.1016/j.ijpharm.2019.118656. Epub 2019 Sep 6.


Readmission and processes of care across weekend and weekday hospitalisation for acute myocardial infarction, heart failure or stroke: an observational study of the National Readmission Database.

Martin GP, Kwok CS, Van Spall HGC, Volgman AS, Michos E, Parwani P, Alraies C, Thamman R, Kontopantelis E, Mamas M.

BMJ Open. 2019 Aug 22;9(8):e029667. doi: 10.1136/bmjopen-2019-029667.


Same-Day Discharge After Elective Percutaneous Coronary Intervention: Insights From the British Cardiovascular Intervention Society.

Taxiarchi P, Kontopantelis E, Martin GP, Kinnaird T, Curzen N, Banning AP, Ludman P, De Belder M, Rashid M, Sperrin M, Mamas MA.

JACC Cardiovasc Interv. 2019 Aug 12;12(15):1479-1494. doi: 10.1016/j.jcin.2019.03.030.


How unmeasured confounding in a competing risks setting can affect treatment effect estimates in observational studies.

Barrowman MA, Peek N, Lambie M, Martin GP, Sperrin M.

BMC Med Res Methodol. 2019 Jul 31;19(1):166. doi: 10.1186/s12874-019-0808-7.


Why is reporting quality improvement so hard? A qualitative study in perioperative care.

Jones EL, Dixon-Woods M, Martin GP.

BMJ Open. 2019 Jul 24;9(7):e030269. doi: 10.1136/bmjopen-2019-030269.


Delivered Lung Dose and Aerodynamic Particle Size Distribution of Salbutamol Pressurized Metered Dose Inhaler After Living Under Patients' Realistic Retention Environments.

Ammari WG, Khalil Mohammad M, Tayyem RF, Martin GP, Royall PG.

J Aerosol Med Pulm Drug Deliv. 2019 Dec;32(6):386-395. doi: 10.1089/jamp.2019.1526. Epub 2019 Jun 14.


Combinations of bleeding and ischemic risk and their association with clinical outcomes in acute coronary syndrome.

Mohamed MO, Kinnaird T, Anderson R, Rashid M, Martin GP, Freeman P, Kwok CS, Myint PK, Zaman AG, Mamas MA.

Int J Cardiol. 2019 Sep 1;290:7-14. doi: 10.1016/j.ijcard.2019.05.035. Epub 2019 May 21.


Dynamic models to predict health outcomes: current status and methodological challenges.

Jenkins DA, Sperrin M, Martin GP, Peek N.

Diagn Progn Res. 2018 Dec 18;2:23. doi: 10.1186/s41512-018-0045-2. eCollection 2018. Review.


Timing and Causes of Unplanned Readmissions After Percutaneous Coronary Intervention: Insights From the Nationwide Readmission Database.

Kwok CS, Shah B, Al-Suwaidi J, Fischman DL, Holmvang L, Alraies C, Bagur R, Nagaraja V, Rashid M, Mohamed M, Martin GP, Kontopantelis E, Kinnaird T, Mamas M.

JACC Cardiovasc Interv. 2019 Apr 22;12(8):734-748. doi: 10.1016/j.jcin.2019.02.007. Epub 2019 Mar 27.


Importance of quality control in 'big data': implications for statistical inference of electronic health records in clinical cardiology.

Martin GP, Mamas MA.

Cardiovasc Res. 2019 May 1;115(6):e63-e65. doi: 10.1093/cvr/cvy290. No abstract available.


Temporal trends in relative survival following percutaneous coronary intervention.

Hulme WJ, Sperrin M, Martin GP, Curzen N, Ludman P, Kontopantelis E, Mamas MA; British Cardiovascular Intervention Society and the National Institute of Cardiovascular Outcomes Research.

BMJ Open. 2019 Feb 19;9(2):e024627. doi: 10.1136/bmjopen-2018-024627.


The Influence of the Charlson Comorbidity Index on Procedural Characteristics, VARC-2 Endpoints and 30-Day Mortality Among Patients Who Undergo Transcatheter Aortic Valve Implantation.

George S, Kwok CS, Martin GP, Babu A, Shufflebotham A, Nolan J, Ratib K, Bagur R, Gunning M, Mamas M.

Heart Lung Circ. 2019 Dec;28(12):1827-1834. doi: 10.1016/j.hlc.2018.11.006. Epub 2018 Nov 30.


Senior stakeholder views on policies to foster a culture of openness in the English National Health Service: a qualitative interview study.

Martin GP, Chew S, Dixon-Woods M.

J R Soc Med. 2019 Apr;112(4):153-159. doi: 10.1177/0141076818815509. Epub 2018 Dec 3.


Pre-procedural risk models for patients undergoing transcatheter aortic valve implantation.

Martin GP, Sperrin M, Mamas MA.

J Thorac Dis. 2018 Nov;10(Suppl 30):S3560-S3567. doi: 10.21037/jtd.2018.05.67. Review.


Variability in the α and β anomer content of commercially available lactose.

Altamimi MJ, Wolff K, Nokhodchi A, Martin GP, Royall PG.

Int J Pharm. 2019 Jan 30;555:237-249. doi: 10.1016/j.ijpharm.2018.10.061. Epub 2018 Nov 2.


In reply.

Wright B, Martin GP, Ahmed A, Banerjee J, Mason S, Roland D.

Ann Emerg Med. 2018 Nov;72(5):625-626. doi: 10.1016/j.annemergmed.2018.07.009. No abstract available.


Discharge against medical advice after hospitalisation for acute myocardial infarction.

Kwok CS, Walsh MN, Volgman A, Alasnag M, Martin GP, Barker D, Patwala A, Bagur R, Fischman DL, Mamas MA.

Heart. 2019 Feb;105(4):315-321. doi: 10.1136/heartjnl-2018-313671. Epub 2018 Sep 12.


Using marginal structural models to adjust for treatment drop-in when developing clinical prediction models.

Sperrin M, Martin GP, Pate A, Van Staa T, Peek N, Buchan I.

Stat Med. 2018 Dec 10;37(28):4142-4154. doi: 10.1002/sim.7913. Epub 2018 Aug 2.


Association of comorbid burden with clinical outcomes after transcatheter aortic valve implantation.

Bagur R, Martin GP, Nombela-Franco L, Doshi SN, George S, Toggweiler S, Sponga S, Cotton JM, Khogali SS, Ratib K, Kinnaird T, Anderson RA, Chu MWA, Kiaii B, Biagioni C, Schofield-Kelly L, Loretz L, Torracchi L, Sekar B, Kwok CS, Sperrin M, Ludman PF, Mamas MA.

Heart. 2018 Dec;104(24):2058-2066. doi: 10.1136/heartjnl-2018-313356. Epub 2018 Jul 20.


Crystallisation of freeze-dried sucrose in model mixtures that represent the amorphous sugar matrices present in confectionery.

Jawad R, Elleman C, Martin GP, Royall PG.

Food Funct. 2018 Sep 19;9(9):4621-4634. doi: 10.1039/c8fo00729b.


Do frailty measures improve prediction of mortality and morbidity following transcatheter aortic valve implantation? An analysis of the UK TAVI registry.

Martin GP, Sperrin M, Ludman PF, deBelder MA, Gunning M, Townend J, Redwood SR, Kadam UT, Buchan I, Mamas MA.

BMJ Open. 2018 Jun 30;8(6):e022543. doi: 10.1136/bmjopen-2018-022543.


How the Availability of Observation Status Affects Emergency Physician Decisionmaking.

Wright B, Martin GP, Ahmed A, Banerjee J, Mason S, Roland D.

Ann Emerg Med. 2018 Oct;72(4):401-409. doi: 10.1016/j.annemergmed.2018.04.023. Epub 2018 Jun 5.


Making soft intelligence hard: a multi-site qualitative study of challenges relating to voice about safety concerns.

Martin GP, Aveling EL, Campbell A, Tarrant C, Pronovost PJ, Mitchell I, Dankers C, Bates D, Dixon-Woods M.

BMJ Qual Saf. 2018 Sep;27(9):710-717. doi: 10.1136/bmjqs-2017-007579. Epub 2018 Feb 19.


A multiple-model generalisation of updating clinical prediction models.

Martin GP, Mamas MA, Peek N, Buchan I, Sperrin M.

Stat Med. 2018 Apr 15;37(8):1343-1358. doi: 10.1002/sim.7586. Epub 2017 Dec 18.


Novel United Kingdom prognostic model for 30-day mortality following transcatheter aortic valve implantation.

Martin GP, Sperrin M, Ludman PF, de Belder MA, Redwood SR, Townend JN, Gunning M, Moat NE, Banning AP, Buchan I, Mamas MA.

Heart. 2018 Jul;104(13):1109-1116. doi: 10.1136/heartjnl-2017-312489. Epub 2017 Dec 7.


Relative Survival After Transcatheter Aortic Valve Implantation: How Do Patients Undergoing Transcatheter Aortic Valve Implantation Fare Relative to the General Population?

Martin GP, Sperrin M, Hulme W, Ludman PF, de Belder MA, Toff WD, Alabas O, Moat NE, Doshi SN, Buchan I, Deanfield JE, Gale CP, Mamas MA; National Institute of Cardiovascular Outcomes Research (NICOR).

J Am Heart Assoc. 2017 Oct 17;6(10). pii: e007229. doi: 10.1161/JAHA.117.007229.


Effect of weekend admission on process of care and clinical outcomes for the management of acute coronary syndromes: a retrospective analysis of three UK centres.

Martin GP, Kinnaird T, Sperrin M, Anderson R, Gamal A, Jabbar A, Kwok CS, Barker D, Heatlie G, Zaman AG, Mamas MA.

BMJ Open. 2017 Sep 29;7(9):e016866. doi: 10.1136/bmjopen-2017-016866.


Major health service transformation and the public voice: conflict, challenge or complicity?

Martin GP, Carter P, Dent M.

J Health Serv Res Policy. 2018 Jan;23(1):28-35. doi: 10.1177/1355819617728530. Epub 2017 Sep 4.


The personal and the organisational perspective on iatrogenic harm: bridging the gap through reconciliation processes.

Martin GP, Chew S, Palser TR.

BMJ Qual Saf. 2017 Oct;26(10):779-781. doi: 10.1136/bmjqs-2017-006914. Epub 2017 Jul 26. No abstract available.


Informatics for Health 2017: Advancing both science and practice.

Scott PJ, Cornet R, McCowan C, Peek N, Fraccaro P, Geifman N, Gude WT, Hulme W, Martin GP, Williams R.

J Innov Health Inform. 2017 Apr 21;24(1):1-185. doi: 10.14236/jhi.v24i1.939.


Pathways to professionalism? Quality improvement, care pathways, and the interplay of standardisation and clinical autonomy.

Martin GP, Kocman D, Stephens T, Peden CJ, Pearse RM; This study was carried out as part of a wider randomised controlled trial, EPOCH.

Sociol Health Illn. 2017 Nov;39(8):1314-1329. doi: 10.1111/1467-9566.12585. Epub 2017 Jun 21.


Inadequacy of existing clinical prediction models for predicting mortality after transcatheter aortic valve implantation.

Martin GP, Sperrin M, Ludman PF, de Belder MA, Gale CP, Toff WD, Moat NE, Trivedi U, Buchan I, Mamas MA.

Am Heart J. 2017 Feb;184:97-105. doi: 10.1016/j.ahj.2016.10.020. Epub 2016 Nov 3.


Pre-Implantation Balloon Aortic Valvuloplasty and Clinical Outcomes Following Transcatheter Aortic Valve Implantation: A Propensity Score Analysis of the UK Registry.

Martin GP, Sperrin M, Bagur R, de Belder MA, Buchan I, Gunning M, Ludman PF, Mamas MA.

J Am Heart Assoc. 2017 Feb 18;6(2). pii: e004695. doi: 10.1161/JAHA.116.004695.


Clinical prediction in defined populations: a simulation study investigating when and how to aggregate existing models.

Martin GP, Mamas MA, Peek N, Buchan I, Sperrin M.

BMC Med Res Methodol. 2017 Jan 6;17(1):1. doi: 10.1186/s12874-016-0277-1.


Use or Abuse? A Qualitative Study of Emergency Physicians' Views on Use of Observation Stays at Three Hospitals in the United States and England.

Martin GP, Wright B, Ahmed A, Banerjee J, Mason S, Roland D.

Ann Emerg Med. 2017 Mar;69(3):284-292.e2. doi: 10.1016/j.annemergmed.2016.08.458. Epub 2016 Nov 23.


Does quality improvement improve quality?

Dixon-Woods M, Martin GP.

Future Hosp J. 2016 Oct;3(3):191-194. doi: 10.7861/futurehosp.3-3-191.


The development of a growth regime map for a novel reverse-phase wet granulation process.

Wade JB, Martin GP, Long DF.

Int J Pharm. 2016 Oct 15;512(1):224-233. doi: 10.1016/j.ijpharm.2016.08.050. Epub 2016 Aug 26.


In vivo pharmacological activity and biodistribution of S-nitrosophytochelatins after intravenous and intranasal administration in mice.

Heikal L, Starr A, Martin GP, Nandi M, Dailey LA.

Nitric Oxide. 2016 Sep 30;59:1-9. doi: 10.1016/j.niox.2016.06.006. Epub 2016 Jun 24.


Establishing the importance of oil-membrane interactions on the transmembrane diffusion of physicochemically diverse compounds.

Najib ON, Martin GP, Kirton SB, Sallam AS, Murnane D.

Int J Pharm. 2016 Jun 15;506(1-2):429-37. doi: 10.1016/j.ijpharm.2016.03.020. Epub 2016 Mar 21.


The Safer Delivery of Surgical Services Program (S3): Explaining Its Differential Effectiveness and Exploring Implications for Improving Quality in Complex Systems.

Flynn LC, McCulloch PG, Morgan LJ, Robertson ER, New SJ, Stedman FE, Martin GP.

Ann Surg. 2016 Dec;264(6):997-1003.


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