|The use of fractional polynomials to model continuous risk variables in epidemiology.|
P Royston, G Ambler, W Sauerbrei
International journal of epidemiology 28 (5), 964-974, 1999
|Generic, simple risk stratification model for heart valve surgery|
G Ambler, RZ Omar, P Royston, R Kinsman, BE Keogh, KM Taylor
Circulation 112 (2), 224-231, 2005
|How to develop a more accurate risk prediction model when there are few events|
M Pavlou, G Ambler, SR Seaman, O Guttmann, P Elliott, M King, RZ Omar
Bmj 351, h3868, 2015
|Ethnic group differences in overweight and obese children and young people in England: cross sectional survey|
S Saxena, G Ambler, TJ Cole, A Majeed
Archives of Disease in Childhood 89 (1), 30-36, 2004
|A comparison of imputation techniques for handling missing predictor values in a risk model with a binary outcome|
G Ambler, RZ Omar, P Royston
Statistical methods in medical research 16 (3), 277-298, 2007
|Intravenous immunoglobulin treatment of the complex regional pain syndrome: a randomized trial|
A Goebel, A Baranowski, K Maurer, A Ghiai, C McCabe, G Ambler
Annals of internal medicine 152 (3), 152-158, 2010
|Off-pump coronary artery bypass (OPCAB) surgery reduces risk-stratified morbidity and mortality: a United Kingdom multi-center comparative analysis of early clinical outcome|
S Al-Ruzzeh, G Ambler, G Asimakopoulos, RZ Omar, R Hasan, B Fabri, ...
Circulation 108 (10_suppl_1), II-1-II-8, 2003
|Social variations in access to hospital care for patients with colorectal, breast, and lung cancer between 1999 and 2006: retrospective analysis of hospital episode statistics|
R Raine, W Wong, S Scholes, C Ashton, A Obichere, G Ambler
Bmj 340, 2010
|Simplifying a prognostic model: a simulation study based on clinical data|
G Ambler, AR Brady, P Royston
Statistics in medicine 21 (24), 3803-3822, 2002
|Prevalence of conventional and lupus‐specific risk factors for cardiovascular disease in patients with systemic lupus erythematosus: a case–control study|
R Bessant, R Duncan, G Ambler, J Swanton, DA Isenberg, C Gordon, ...
Arthritis Care & Research: Official Journal of the American College of …, 2006
|The effect of neoadjuvant chemotherapy on physical fitness and survival in patients undergoing oesophagogastric cancer surgery|
S Jack, MA West, D Raw, S Marwood, G Ambler, TM Cope, M Shrotri, ...
European Journal of Surgical Oncology (EJSO) 40 (10), 1313-1320, 2014
|Selective laser trabeculoplasty versus eye drops for first-line treatment of ocular hypertension and glaucoma (LiGHT): a multicentre randomised controlled trial|
G Gazzard, E Konstantakopoulou, D Garway-Heath, A Garg, V Vickerstaff, ...
The Lancet 393 (10180), 1505-1516, 2019
|Cerebral microbleeds and intracranial haemorrhage risk in patients anticoagulated for atrial fibrillation after acute ischaemic stroke or transient ischaemic attack (CROMIS-2 …|
D Wilson, G Ambler, C Shakeshaft, MM Brown, A Charidimou, ...
The Lancet Neurology 17 (6), 539-547, 2018
|Fractional polynomial model selection procedures: investigation of Type I error rate|
G Ambler, P Royston
Journal of Statistical Computation and Simulation 69 (1), 89-108, 2001
|Sample size calculation for a stepped wedge trial|
G Baio, A Copas, G Ambler, J Hargreaves, E Beard, RZ Omar
Trials 16 (1), 1-15, 2015
|Cardiovascular risk and diabetes. Are the methods of risk prediction satisfactory?|
JW Stephens, G Ambler, P Vallance, DJ Betteridge, SE Humphries, ...
European Journal of Cardiovascular Prevention & Rehabilitation 11 (6), 521-528, 2004
|Recurrent stroke risk and cerebral microbleed burden in ischemic stroke and TIA: a meta-analysis|
D Wilson, A Charidimou, G Ambler, ZV Fox, S Gregoire, P Rayson, ...
Neurology 87 (14), 1501-1510, 2016
|Outcome of intracerebral hemorrhage associated with different oral anticoagulants|
D Wilson, DJ Seiffge, C Traenka, G Basir, JC Purrucker, T Rizos, ...
Neurology 88 (18), 1693-1700, 2017
|Review and evaluation of penalised regression methods for risk prediction in low‐dimensional data with few events|
M Pavlou, G Ambler, S Seaman, M De Iorio, RZ Omar
Statistics in medicine 35 (7), 1159-1177, 2016
|Volume and functional outcome of intracerebral hemorrhage according to oral anticoagulant type|
D Wilson, A Charidimou, C Shakeshaft, G Ambler, M White, H Cohen, ...
Neurology 86 (4), 360-366, 2016