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Pate, A, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Collins, GS, van Smeden, M, Van Calster, B, Ensor, J and Martin, GP (2023) Minimum sample size for developing a multivariable prediction model using multinomial logistic regression. Statistical Methods in Medical Research, 32 (3). pp. 555-571.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Hattle, M, Collins, GS, Whittle, R ORCID: https://orcid.org/0000-0003-1793-0135 and Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282 (2022) Calculating the power to examine treatment-covariate interactions when planning an individual participant data meta-analysis of randomized trials with a binary outcome. Statistics in Medicine.

Fitzgerald, I, Crowley, EK, Byrne, A, O'Connell, J, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Ni Dhubhlaing, C, O'Dwyer, S and Sahm, LJ (2022) Predicting antipsychotic-induced weight gain in first episode psychosis – a protocol for a field-wide systematic review of non-genetic prognostic factor studies. Pharmacoepidemiology and Drug Safety, 31 (S1). 21 - 22.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Collins, GS, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Archer, L ORCID: https://orcid.org/0000-0003-2504-2613, Booth, S, Mozumder, SI, Rutherford, MJ, van Smeden, M, Lambert, PC and Snell, KIE ORCID: https://orcid.org/0000-0001-9373-6591 (2021) Minimum sample size calculations for external validation of a clinical prediction model with a time-to-event outcome. Statistics in Medicine.

Zhang, F, Chiu, Y, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Mohamed, MO ORCID: https://orcid.org/0000-0002-9678-5222, Peat, G ORCID: https://orcid.org/0000-0002-9008-0184 and Mamas, MA ORCID: https://orcid.org/0000-0001-9241-8890 (2021) Elixhauser outperformed Charlson comorbidity index in prognostic value after ACS: insights from a national registry. Journal of Clinical Epidemiology, 141. pp. 26-35.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Debray, TPA, Collins, GS, Archer, L ORCID: https://orcid.org/0000-0003-2504-2613, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, van Smeden, M and Snell, KIE ORCID: https://orcid.org/0000-0001-9373-6591 (2021) Minimum sample size for external validation of a clinical prediction model with a binary outcome. Statistics in Medicine.

Zhang, F, Wong, C, Chiu, Y, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Mohamed, MO ORCID: https://orcid.org/0000-0002-9678-5222, Peat, G ORCID: https://orcid.org/0000-0002-9008-0184 and Mamas, MA ORCID: https://orcid.org/0000-0001-9241-8890 (2021) Prognostic impact of comorbidity measures on outcomes following acute coronary syndrome: a systematic review. International Journal of Clinical Practice. e14345 - ?.

Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Snell, KIE ORCID: https://orcid.org/0000-0001-9373-6591, Debray, TPA, Lambert, PC, Look, MP, Mamas, MA ORCID: https://orcid.org/0000-0001-9241-8890, Moons, KGM and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2021) Individual participant data meta-analysis for external validation, recalibration, and updating of a flexible parametric prognostic model. Statistics in Medicine.

Crocker, TF, Clegg, A, Riley, RD, Lam, N, Bajpai, R, Jordão, M, Patetsini, E, Ramiz, R, Ensor, J, Forster, A and Gladman, JRF (2021) Community-based complex interventions to sustain independence in older people, stratified by frailty: a protocol for a systematic review and network meta-analysis. BMJ Open, 11 (2). e045637 - ?.

Snell, KIE ORCID: https://orcid.org/0000-0001-9373-6591, Archer, L ORCID: https://orcid.org/0000-0003-2504-2613, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Bonnett, LJ, Debray, TP, Phillips, B, Collins, GS and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2021) External validation of clinical prediction models: simulation-based sample size calculations were more reliable than rules-of-thumb. Journal of Clinical Epidemiology.

Archer, L, Snell, KIE, Ensor, J, Hudda, MT, Collins, GS and Riley, RD (2020) Minimum sample size for external validation of a clinical prediction model with a continuous outcome. Statistics in Medicine.

Zhang, F, Bharadwaj, A, Mohamed, MO ORCID: https://orcid.org/0000-0002-9678-5222, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Peat, G ORCID: https://orcid.org/0000-0002-9008-0184 and Mamas, M ORCID: https://orcid.org/0000-0001-9241-8890 (2020) Impact of Charlson Comorbidity Index Score on Management and Outcomes after Acute Coronary Syndrome. American Journal of Cardiology, 130. pp. 15-23.

Zhang, F, Mohamed, MO ORCID: https://orcid.org/0000-0002-9678-5222, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Peat, G ORCID: https://orcid.org/0000-0002-9008-0184 and Mamas, MA ORCID: https://orcid.org/0000-0001-9241-8890 (2020) Temporal Trends in Comorbidity Burden and Impact on Prognosis in Patients With Acute Coronary Syndrome Using the Elixhauser Comorbidity Index Score. American Journal of Cardiology, 25 (11). pp. 1603-1611.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Legha, A ORCID: https://orcid.org/0000-0001-7389-5384, Jackson, D, Morris, TP, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Snell, KIE ORCID: https://orcid.org/0000-0001-9373-6591, White, IR and Burke, DL ORCID: https://orcid.org/0000-0003-2803-1151 (2020) One-stage individual participant data meta-analysis models for continuous and binary outcomes: comparison of treatment coding options and estimation methods. Statistics in Medicine, 39 (19). pp. 2536-2555.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Debray, T, Fisher, D, Hattle, M, Marlin, N, Hoogland, J, Gueyffier, F, Staessen, J, Wang, J, Moons, K, Reitsma, J and Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282 (2020) Individual participant data meta-analysis to examine interactions between treatment effect and participant-level covariates: statistical recommendations for conduct and planning. Statistics in Medicine.

Booth, S, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Lambert, PC and Rutherford, MJ (2020) Temporal recalibration for improving prognostic model development and risk predictions in settings where survival is improving over time. International Journal of Epidemiology, 49 (4). pp. 1316-1325.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Snell, KIE ORCID: https://orcid.org/0000-0001-9373-6591, Harrell, FE, Martin, GP, Reitsma, JB, Moons, KGM, Collins, G and van Smeden, M (2020) Calculating the sample size required for developing a clinical prediction model. BMJ, 368. -.

Pihl, K, Ensor, J, Peat, G ORCID: https://orcid.org/0000-0002-9008-0184, Englund, M, Lohmander, S, Jørgensen, U, Nissen, N, Fristed, JV and Thorlund, JB (2020) Wild-goose chase, no predictable patient subgroups who benefit from meniscal surgery: patient-reported outcomes of 641 patients 1 year after surgery. British Journal of Sports Medicine, 54 (1).

Rashid, M, Fischman, DL, Martinez, SC, Capers, Q, Savage, M, Zaman, A, Curzen, N, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Potts, J, Mohamed, MO, Kwok, CS ORCID: https://orcid.org/0000-0001-7047-1586, Kinnaird, T, Bagur, R ORCID: https://orcid.org/0000-0003-1888-9429 and Mamas, M ORCID: https://orcid.org/0000-0001-9241-8890 (2019) Temporal trends and predictors of time to coronary angiography following non-ST-elevation acute coronary syndrome in the USA. Coronary Artery Disease, 30 (1). pp. 159-170.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Snell, KI, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Burke, DL ORCID: https://orcid.org/0000-0003-2803-1151, Harrell, FE, Moons, KG and Collins, GS (2019) Minimum sample size for developing a multivariable prediction model: PART II - binary and time-to-event outcomes. Statistics in Medicine, 38 (7). pp. 1276-1296.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Snell, KI, Ensor, J, Burke, DL, Harrell, FE, Moons, KGM and Collins, GS (2019) Minimum sample size for developing a multivariable prediction model: Part II-binary and time-to-event outcomes. Statistics in Medicine, 38 (7). pp. 1276-1296.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Snell, KIE, Ensor, J, Burke, DL, Harrell, FE, Moons, KGM and Collins, GS (2019) Minimum sample size for developing a multivariable prediction model: Part I - Continuous outcomes. Statistics in Medicine, 38 (7). 1262 - 1275.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Moons, KGM, Snell, KIE, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Hooft, L, Altman, DG, Hayden, J, Collins, GS and Debray, TPA (2019) A guide to systematic review and meta-analysis of prognostic factor studies. BMJ, 364.

Chadi, SA, Malcomson, L, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Vaccaro, CA, Rossi, GL, Daniels, IR, Smart, NJ, Osborne, ME, Beets, GL, Maas, M, Bitterman, DS, Du, K, Gollins, S, Sun Myint, A, Smith, FM, Saunders, MP, Scott, N, O'Dwyer, ST, de Castro Araujo, RO, Valadao, M, Lopes, A, Hsiao, C-W, Lai, C-L, Smith, RK, Paulson, EC, Appelt, A, Jakobsen, A, Wexner, SD, Habr-Gama, A, Sao Julião, G, Perez, R and Renehan, AG (2018) Factors affecting local regrowth after watch and wait for patients with a clinical complete response following chemoradiotherapy in rectal cancer (InterCoRe consortium): an individual participant data meta-analysis. The Lancet Gastroenterology and Hepatology, 3 (12). 825 - 836.

Chadi, SA, Malcomson, L, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Vaccaro, CA, Rossi, GL, Daniels, IR, Smart, NJ, Osborne, ME, Beets, GL, Maas, M, Bitterman, DS, Du, K, Gollins, S, Myint, AS, Smith, FM, Saunders, MP, Scott, N, O'Dwyer, ST, Otavio de Castro Araujo, R, Valadao, M, Lopes, A, Hsiao, C-W, Lai, C-L, Smith, RK, Paulson, EC, Appelt, A, Jakobsen, A, Wexner, SD, Habr-Gama, A, Sao Julião, G, Perez, RO and Renehan, AG (2018) Factors affecting local regrowth after watch and wait for patients with a clinical complete response following chemoradiotherapy in rectal cancer (InterCoRe consortium): an individual participant data meta-analysis. Lancet Gastroenterology and Hepatology, 3 (12). 825 - 836.

Snell, KI, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Debray, TP, Moons, KG and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2018) Meta-analysis of prediction model performance across multiple studies: Which scale helps ensure between-study normality for the C-statistic and calibration measures? Stat Methods Med Res, 27 (11). pp. 3505-3522.

Chadi, S, Malcolmson, L, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Vaccaro, C, Rossi, G, Daniels, I, Smart, N, Osborne, M, Beets, G, Maas, M, Bitterman, D, Du, K, Gollins, S, Sun Myint, A, Smith, F, Saunders, M, Scott, N, O'Dwyer, S, Otavio de Castro Araujo, R, Valadao, M, Lopes, A, Hsiao, CW, Lai, CL, Smith, R, Carter Poulson, E, Appelt, A, Jakobsen, A, Wexner, S, Habr-Gama, A, Sao Juliao, G, Perez, R and Renehan, A (2018) Factors affecting local regrowth after watch and wait for patients with a clinical complete response following chemoradiotherapy in rectal cancer (InterCoRe consortium): an individual participant data meta-analysis. The Lancet Gastroenterology and Hepatology.

Potts, JE, Sirker, A, Martinez, S, Gulati, M, Alasnag, M, Rashid, M, Kwok, CS ORCID: https://orcid.org/0000-0001-7047-1586, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Burke, D, Riley, R ORCID: https://orcid.org/0000-0001-8699-0735, Holmvang, L and Mamas, M ORCID: https://orcid.org/0000-0001-9241-8890 (2018) Persistent sex disparities in clinical outcomes with percutaneous coronary intervention: Insights from 6.6 million PCI precedures in the United States. PLoS ONE, 13 (9).

Potts, JE, Kwok, CS, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Rashid, M, Kadam, UT, Kinnaird, T, Curzen, N, Pancholy, SB, van der Windt, DA, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Bagur, R and Mamas, MA ORCID: https://orcid.org/0000-0001-9241-8890 (2018) Temporal Changes in Comorbidity Burden in Patients Having Percutaneous Coronary Intervention and Impact on Prognosis. American Journal of Cardiology, 122 (5). pp. 712-722.

Legha, A ORCID: https://orcid.org/0000-0001-7389-5384, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Snell, KIE, Morris, TP and Burke, DL ORCID: https://orcid.org/0000-0003-2803-1151 (2018) Individual participant data meta-analysis of continuous outcomes: A comparison of approaches for specifying and estimating one-stage models. Statistics in Medicine.

Burke, DL ORCID: https://orcid.org/0000-0003-2803-1151, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Snell, KIE, van der Windt, DA ORCID: https://orcid.org/0000-0002-7248-6703 and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2018) Guidance for deriving and presenting percentage study weights in meta-analysis of test accuracy studies. Research Synthesis Methods, 9 (2). 163 - 178.

Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Burke, DL, Snell, KIE, Hemming, K and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2018) Simulation-based power calculations for planning a two-stage individual participant data meta-analysis. BMC Medical Research Methodology, 18 (1). 41 -?.

Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Deeks, JJ, Martin, EC and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2018) Meta-analysis of test accuracy studies using imputation for partial reporting of multiple thresholds. Research Synthesis Methods, 9 (1). pp. 100-115.

Monahan, M, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Moore, D, Fitzmaurice, D and Jowett, S (2017) Economic evaluation of strategies for restarting anticoagulation therapy after a first event of unprovoked venous thromboembolism. Journal of Thrombosis and Haemostasis, 15 (8). pp. 1591-1600.

Monahan, M, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Moore, D, Fitzmaurice, D and Jowett, S (2017) Economic evaluation of strategies for restarting anticoagulation therapy with warfarin based on Venous Thromboembolism (VTE) risk after an index unprovoked VTE event. Journal of Thrombosis and Haemostasis, 15 (8). pp. 1591-1600.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Jackson, D and Burke, DL (2017) Deriving percentage study weights in multi-parameter meta-analysis models: with application to meta-regression, network meta-analysis and one-stage individual participant data models. Stat Methods Med Res, 27 (10). pp. 2885-2905.

Debray, TPA, Damen, JAAG, Snell, KIE, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Hooft, L, Reitsma, JB, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 and Moons, KGM (2017) A guide to systematic review and meta-analysis of prediction model performance. British Medical Journal, 356.

Hua, H, Burke, DL, Crowther, MJ, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Tudur Smith, C and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2016) One-stage individual participant data meta-analysis models: estimation of treatment-covariate interactions must avoid ecological bias by separating out within-trial and across-trial information. Statistics in Medicine, 36 (5). pp. 772-789.

Burke, DL ORCID: https://orcid.org/0000-0003-2803-1151, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282 and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2016) Meta-analysis using individual participant data: one-stage and two-stage approaches, and why they may differ. Statistics in Medicine, 36 (5). pp. 855-875.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Snell, KIE, Debray, TPA, Altman, DG, Moons, KGM and Collins, GS (2016) External validation of clinical prediction models using big datasets from e-health records or IPD meta-analysis: opportunities and challenges. BMJ, 353.

Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Moore, D, Snell, KI, Bayliss, S and Fitzmaurice, D (2016) Systematic review of prognostic models for recurrent venous thromboembolism (VTE) post-treatment of first unprovoked VTE. BMJ Open, 6 (5). e011190 - ?.

Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Jowett, S, Monahan, M, Snell, KIE, Bayliss, S, Moore, D and Fitzmaurice, D (2016) Prediction of risk of recurrence of venous thromboembolism following treatment for a first unprovoked venous thromboembolism: systematic review, prognostic model and clinical decision rule, and economic evaluation. Health Technology Assessment, 20 (12). i - 190.

Snell, KI, Hua, H, Debray, TP, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Look, MP, Moons, KG and Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735 (2015) Multivariate meta-analysis of individual participant data helped externally validate the performance and implementation of a prediction model. Journal of Clinical Epidemiology, 69. pp. 40-50.

Dretzke, J, Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Lordkipanidzé, M, Jowett, S, O'Donnell, J, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Moloney, E, Price, M, Raichand, S, Hodgkinson, J, Bayliss, S, Fitzmaurice, D and Moore, D (2015) The prognostic utility of tests of platelet function for the detection of 'aspirin resistance' in patients with established cardiovascular or cerebrovascular disease: a systematic review and economic evaluation. Health Technology Assessment, 19 (37). 1 - 366.

Riley, RD ORCID: https://orcid.org/0000-0001-8699-0735, Ahmed, I, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Takwoingi, Y, Kirkham, A, Morris, RK, Noordzij, JP and Deeks, JJ (2015) Meta-analysis of test accuracy studies: an exploratory method for investigating the impact of missing thresholds. Systematic Reviews, 4. 12 -?.

Conference or Workshop Item

Babatunde, OO ORCID: https://orcid.org/0000-0002-5064-6446, Ensor, J ORCID: https://orcid.org/0000-0001-7481-0282, Littlewood, C ORCID: https://orcid.org/0000-0002-7703-727X, Jordan, JL ORCID: https://orcid.org/0000-0002-7191-2977, Roddy, E ORCID: https://orcid.org/0000-0002-8954-7082, Foster, NE ORCID: https://orcid.org/0000-0003-4429-9756 and van der Windt, DA ORCID: https://orcid.org/0000-0002-7248-6703 (2017) Comparative effectiveness of treatment options for subacromial shoulder conditions: A network meta-analysis. In: Global Evidence Summit 1017.