Peer-reviewed research

Selected Publications

Research on methods for the design of cluster-randomized trials, analysis, and health economics.

2026
1 paper

Jessica Kasza, Kelsey L. Grantham, Rhys Bowden, Brennan C Kahan, A. Forbes (2026) Repeated inclusion cluster randomized trials: a new class of designs for assessing group-level interventions. Biometrics 82(1).

2025
3 papers
Open access

Ehsan Rezaei‐Darzi, Kelsey L. Grantham, Andrew Forbes, Jessica Kasza (2025) Inference for the treatment effect in staircase designs with continuous outcomes: a simulation study. BMC Medical Research Methodology 25(1), 127–127.

Open access

Ehsan Rezaei‐Darzi, Jessica Kasza, Anisa Assifi, Danielle Mazza, Andrew Forbes, Kelsey L. Grantham (2025) Identifying Less Burdensome and More Cost‐Efficient Incomplete Stepped Wedge Designs for Continuous Outcomes Collected via Repeated Cross‐Sections. Statistics in Medicine 44(8-9), e70067–e70067.

Open access

Kelsey L. Grantham, Andrew Forbes, Richard Hooper, Jessica Kasza (2025) The relative efficiency of staircase and stepped wedge cluster randomised trial designs. Statistical Methods in Medical Research 34(4), 701–716.

DOI ↗ Cite 4 citations
2024
2 papers
Open access

Sarah L. McGuinness, Owen Eades, Shannon Zhong, Sharon Clifford, Jane Fisher, Helen L. Kelsall, Maggie Kirkman, Grant Russell, Helen Skouteris, Karin Leder, Peter Cameron, Andrew Forbes, Kelsey L. Grantham, Carol Hodgson, Peter Hunter, Jessica Kasza, Philip L. Russo, Malcolm Sim, Kasha P. Singh, Karen Smith, Rhonda L. Stuart, Helena Teede, James M. Trauer, Andrew Udy, Sophia Zoungas, Sophia Zoungas (2024) A longitudinal qualitative exploration of Victorian healthcare workers’ and organisations’ evolving views and experiences during COVID-19. BMC Health Services Research 24(1), 596–596.

DOI ↗ Cite 6 citations
Open access

Elizabeth Ryan*, Caroline X. Gao*, Kelsey L. Grantham*, Lê Thị Phương Thảo, Anaïs Charles‐Nelson, Rhys Bowden, Alan Herschtal, Katherine J. Lee, Andrew Forbes, Stéphane Héritier, Andrea Phillipou, Rory Wolfe (2024) Advancing randomized controlled trial methodologies: The place of innovative trial design in eating disorders research. International Journal of Eating Disorders 57(6), 1337–1349.

* Joint first author.
DOI ↗ Cite 8 citations
2023
3 papers
Open access

Kelsey L. Grantham, Andrew Forbes, Richard Hooper, Jessica Kasza (2024) The staircase cluster randomised trial design: A pragmatic alternative to the stepped wedge. Statistical Methods in Medical Research 33(1), 24–41.

DOI ↗ Cite 27 citations
Open access

Ehsan Rezaei‐Darzi, Kelsey L. Grantham, Andrew Forbes, Jessica Kasza (2023) The impact of iterative removal of low-information cluster-period cells from a stepped wedge design. BMC Medical Research Methodology 23(1), 160–160.

DOI ↗ Cite 12 citations
Open access

Sarah L. McGuinness, Owen Eades, Kelsey L. Grantham, Shannon Zhong, Josphin Johnson, Peter Cameron, Andrew Forbes, Jane Fisher, Carol Hodgson, Jessica Kasza, Helen L. Kelsall, Maggie Kirkman, Grant Russell, Philip L. Russo, Malcolm Sim, Kasha P. Singh, Helen Skouteris, Karen Smith, Rhonda L. Stuart, James M. Trauer, Andrew Udy, Sophia Zoungas, Karin Leder (2023) Mental health and wellbeing of health and aged care workers in Australia, May 2021 – June 2022: a longitudinal cohort study. The Medical Journal of Australia 218(8), 361–367.

DOI ↗ Cite 22 citations
2022
2 papers
Open access

Sarah L. McGuinness, Josphin Johnson, Owen Eades, Peter Cameron, Andrew Forbes, Jane Fisher, Kelsey L. Grantham, Carol Hodgson, Peter Hunter, Jessica Kasza, Helen L. Kelsall, Maggie Kirkman, Grant Russell, Philip L. Russo, Malcolm Sim, Kasha P. Singh, Helen Skouteris, Karen Smith, Rhonda L. Stuart, Helena Teede, James M. Trauer, Andrew Udy, Sophia Zoungas, Karin Leder (2022) Mental Health Outcomes in Australian Healthcare and Aged-Care Workers during the Second Year of the COVID-19 Pandemic. International Journal of Environmental Research and Public Health 19(9), 4951–4951.

DOI ↗ Cite 31 citations
Open access

Kelsey L. Grantham, Jessica Kasza, Stéphane Héritier, John B. Carlin, Andrew Forbes (2022) Evaluating the performance of Bayesian and restricted maximum likelihood estimation for stepped wedge cluster randomized trials with a small number of clusters. BMC Medical Research Methodology 22(1), 112–112.

DOI ↗ Cite 15 citations
2021
1 paper
Open access

Elizabeth L. Turner, Alyssa Platt, John A. Gallis, Kaitlin Tetreault, Christina Easter, Joanne E. McKenzie, Stephen Nash, Andrew Forbes, Karla Hemming, Christine Adrion, Naseerah Akooji, Hannah Bensoussane, Aneel Bhangu, Jonathan Bishop, Bernadeta Bridgwood, Eric Budgell, Agnès Caille, Michael Campbell, Shiwei Cao, Claire L Chan, Versha Cheed, Michelle Collinson, Andrew Copas, Stephanie N. Dixon, Sandra Eldridge, Alice S. Forster, Alicia Gill, Bruno Giraudeau, Alan Girling, James Glasbey, Beatriz Goulão, Kelsey L. Grantham, Simon Hackett, Thomas Hamborg, Kelly Handley, Monica Harding, Pollyanna Hardy, Catherine A Hewitt, Richard Hooper, Natalie Ives, Kirsty James, Christopher I Jarvis, Ben Jones, Brennan C Kahan, Mona Kanaan, Jessica Kasza, Lindsay Kendall, Caroline Kristunas, Kristie Kusibab, Hui‐Jie Lee, Clémence Leyrat, Stephanie MacNeill, Vichithranie Madurasinghe, James Martín, Ariane M Mbekwe Yepnang, Kara McCormack, Samir Mehta, Mirjam Moerbeek, Kelly Moran, Lazaro Mwandigha, Lee Aymar Ndouga Diakou, Dmitri Nepogodiev, Omar Omar, Laura Pankhurst, Alice Parish, Smitaa Patel, Hayley Perry, Ines Rombach, Ryan Simmons, Beth Stuart, Yongzhong Sun, Monica Taljaard, Elsa Tavernier, JA Thompson, Tracy Truong, João Ricardo Nickenig Vissoci, Adam P. Wagner, T. Wang, Xueqi Wang, Jeremy M. Weber, Nina Wilson, Jon Wilson, Rebecca Woolley, Siyun Yang, Zidanyue Yang (2021) Completeness of reporting and risks of overstating impact in cluster randomised trials: a systematic review. The Lancet Global Health 9(8), e1163–e1168.

DOI ↗ Cite 30 citations
2019
3 papers

Kelsey L. Grantham, Jessica Kasza, Stéphane Héritier, Karla Hemming, Edward Litton, Andrew Forbes (2019) How many times should a cluster randomized crossover trial cross over?. Statistics in Medicine 38(25), 5021–5033.

DOI ↗ Cite 30 citations

Kelsey L. Grantham, Andrew Forbes, Stéphane Héritier, Jessica Kasza (2019) Time Parameterizations in Cluster Randomized Trial Planning. The American Statistician 74(2), 184–189.

DOI ↗ Cite 20 citations

Kelsey L. Grantham, Jessica Kasza, Stéphane Héritier, Karla Hemming, Andrew Forbes (2019) Accounting for a decaying correlation structure in cluster randomized trials with continuous recruitment. Statistics in Medicine 38(11), 1918–1934.

DOI ↗ Cite 49 citations
2018
4 papers
Open access

Ruth Pearson, Madhura Killedar, Janka Petravic, Jakub Kakietek, Nick Scott, Kelsey L. Grantham, Robyn M. Stuart, David Jacob Kedziora, Cliff C. Kerr, Jolene Skordis, Meera Shekar, David P. Wilson (2018) Correction to: Optima nutrition: an allocative efficiency tool to reduce childhood stunting by better targeting of nutrition-related interventions. BMC Public Health 18(1).

DOI ↗ Cite 1 citations
Open access

Robyn M. Stuart, Laura Grobicki, Hassan Haghparast‐Bidgoli, Jasmina Panovska‐Griffiths, Jolene Skordis, Olivia Keiser, Janne Estill, Zofia Barańczuk, Sherrie L. Kelly, Iyanoosh Reporter, David Jacob Kedziora, Andrew J. Shattock, Janka Petravic, Sheharyar Hussain, Kelsey L. Grantham, Richard T. Gray, Xiao F Yap, Rowan Martin‐Hughes, Clemens Benedikt, Nicole Fraser‐Hurt, Emiko Masaki, David J. Wilson, Marelize Görgens, Elizabeth Mziray, Nejma Cheikh, Zara Shubber, Cliff C. Kerr, David P. Wilson (2018) How should HIV resources be allocated? Lessons learnt from applying Optima HIV in 23 countries. Journal of the International AIDS Society 21(4), e25097–e25097.

DOI ↗ Cite 41 citations
Highly cited Open access

Ruth Pearson, Madhura Killedar, Janka Petravic, Jakub Kakietek, Nick Scott, Kelsey L. Grantham, Robyn M. Stuart, David Jacob Kedziora, Cliff C. Kerr, Jolene Skordis, Meera Shekar, David P. Wilson (2018) Optima Nutrition: an allocative efficiency tool to reduce childhood stunting by better targeting of nutrition-related interventions. BMC Public Health 18(1), 384–384.

DOI ↗ Cite 51 citations
Highly cited Open access

Sherrie L. Kelly, Rowan Martin‐Hughes, Robyn M. Stuart, Xiao F Yap, David Jacob Kedziora, Kelsey L. Grantham, Sheharyar Hussain, Iyanoosh Reporter, Andrew J. Shattock, Laura Grobicki, Hassan Haghparast‐Bidgoli, Jolene Skordis, Zofia Barańczuk, Olivia Keiser, Janne Estill, Janka Petravic, Richard T. Gray, Clemens Benedikt, Nicole Fraser, Marelize Görgens, David J. Wilson, Cliff C. Kerr, David P. Wilson (2018) The global Optima HIV allocative efficiency model: targeting resources in efforts to end AIDS. The Lancet HIV 5(4), e190–e198.

DOI ↗ Cite 56 citations
2017
1 paper
Open access

Séverin Guy Mahiane, Kimberly Marsh, Kelsey L. Grantham, Shawna Crichlow, Karen Cáceres, John Stover (2017) Improvements in Spectrum's fit to program data tool. AIDS 31(Supplement 1), S23–S30.

DOI ↗ Cite 14 citations
2016
1 paper

Kelsey L. Grantham, Cliff C. Kerr, David P. Wilson (2016) Local responses to local epidemics for national impact need advanced spatially explicit tools. AIDS 30(9), 1481–1482.

DOI ↗ Cite 6 citations
2013
2 papers
Highly cited Open access

Suzanne Phelan, Maureen G. Phipps, Barbara Abrams, Francine Darroch, Kelsey L. Grantham, Andrew Schaffner, Rena R. Wing (2013) Does behavioral intervention in pregnancy reduce postpartum weight retention? Twelve-month outcomes of the Fit for Delivery randomized trial. American Journal of Clinical Nutrition 99(2), 302–311.

DOI ↗ Cite 105 citations
Open access

Kelsey L. Grantham (2013) Investigation of a Pregnancy Lifestyle Intervention Using Mediation Analysis and a Power Analysis Simulation. DigitalCommons - CalPoly (California State Polytechnic University).