Items where Author or Contributor is "Morgan, Katy E"

Number of items: 20.
2024
Bridge, Helen;
Morgan, Katy E;
Frost, Chris;
(2024)
Negative variance components and intercept-slope correlations greater than one in magnitude: How do such "non-regular" random intercept and slope models arise, and what should be done when they do?
Statistics in medicine, 43 (14).
pp. 2747-2764.
ISSN 0277-6715
DOI: https://doi.org/10.1002/sim.10070
2023
Morgan, Katy E;
White, Ian R;
Frost, Chris;
(2023)
How important is the linearity assumption in a sample size calculation for a randomised controlled trial where treatment is anticipated to affect a rate of change?
BMC medical research methodology, 23 (1).
274-.
ISSN 1471-2288
DOI: https://doi.org/10.1186/s12874-023-02093-2
2021
Nash, Stephen;
Morgan, Katy E;
Frost, Chris;
Mulick, Amy;
(2021)
Power and sample-size calculations for trials that compare slopes over time: Introducing the slopepower command.
The Stata Journal, 21 (3).
pp. 575-601.
ISSN 1536-867X
DOI: https://doi.org/10.1177/1536867X211045512
2020
Imahori, Yume;
Mathiesen, Ellisiv B;
Morgan, Katy E;
Frost, Chris;
Hughes, Alun D;
Hopstock, Laila A;
Johnsen, Stein Harald;
Emaus, Nina;
Leon, David A;
(2020)
The association between anthropometric measures of adiposity and the progression of carotid atherosclerosis.
BMC Cardiovascular Disorders, 20 (1).
138-.
ISSN 1471-2261
DOI: https://doi.org/10.1186/s12872-020-01417-0
2019
Imahori, Y;
(2019)
Adiposity and carotid atherosclerosis in two populations at very different risk of cardiovascular mortality: Norway and Russia.
PhD thesis, London School of Hygiene & Tropical Medicine.
DOI: https://doi.org/10.17037/PUBS.04654524
Morgan, Katy E;
Cook, Sarah;
Leon, David A;
Frost, Chris;
(2019)
Reflection on modern methods: calculating a sample size for a repeatability sub-study to correct for measurement error in a single continuous exposure.
International Journal of Epidemiology, 48 (5).
pp. 1721-1726.
ISSN 0300-5771
DOI: https://doi.org/10.1093/ije/dyz055
2018
Cook, Sarah;
Malyutina, Sofia;
Kudryavtsev, Alexander V;
Averina, Maria;
Bobrova, Natalia;
Boytsov, Sergey;
Brage, Soren;
Clark, Taane G;
Diez Benavente, Ernest;
Eggen, Anne Elise;
+26 more...
Hopstock, Laila A;
Hughes, Alun;
Johansen, Heidi;
Kholmatova, Kamila;
Kichigina, Anastasiya;
Kontsevaya, Anna;
Kornev, Michael;
Leong, Darryl;
Magnus, Per;
Mathiesen, Ellisiv;
McKee, Martin;
Morgan, Katy;
Nilssen, Odd;
Plakhov, Ilya;
Quint, Jennifer K;
Rapala, Alicja;
Ryabikov, Andrey;
Saburova, Lyudmila;
Schirmer, Henrik;
Shapkina, Marina;
Shiekh, Suhail;
Shkolnikov, Vladimir M;
Stylidis, Michael;
Voevoda, Michael;
Westgate, Kate;
Leon, David A;
(2018)
Know Your Heart: Rationale, design and conduct of a cross-sectional study of cardiovascular structure, function and risk factors in 4500 men and women aged 35-69 years from two Russian cities, 2015-18.
Wellcome Open Research, 3.
67-.
DOI: https://doi.org/10.12688/wellcomeopenres.14619.3
Cook, Sarah;
Malyutina, Sofia;
Kudryavtsev, Alexander V;
Averina, Maria;
Bobrova, Natalia;
Boytsov, Sergey;
Brage, Soren;
Clark, Taane G;
Diez Benavente, Ernest;
Eggen, Anne Elise;
+26 more...
Hopstock, Laila A;
Hughes, Alun;
Johansen, Heidi;
Kholmatova, Kamila;
Kichigina, Anastasiya;
Kontsevaya, Anna;
Kornev, Michael;
Leong, Darryl;
Magnus, Per;
Mathiesen, Ellisiv;
McKee, Martin;
Morgan, Katy;
Nilssen, Odd;
Plakhov, Ilya;
Quint, Jennifer K;
Rapala, Alicja;
Ryabikov, Andrey;
Saburova, Lyudmila;
Schirmer, Henrik;
Shapkina, Marina;
Shiekh, Suhail;
Shkolnikov, Vladimir M;
Stylidis, Michael;
Voevoda, Michael;
Westgate, Kate;
Leon, David A;
(2018)
Know Your Heart: Rationale, design and conduct of a cross-sectional study of cardiovascular structure, function and risk factors in 4500 men and women aged 35-69 years from two Russian cities, 2015-18.
Wellcome open research, 3.
67-.
ISSN 2398-502X
DOI: https://doi.org/10.12688/wellcomeopenres.14619.3
Cook, Sarah;
Malyutina, Sofia;
Kudryavtsev, Alexander;
Averina, Maria;
Bobrova, Natalia;
Boytsov, Sergey;
Brage, Soren;
Clark, Taane;
Diez Benavente, Ernest;
Eggen, Anne Elise;
+26 more...
Hopstock, Laila;
Hughes, Alun;
Johansen, Heidi;
Kholmatova, Kamila;
Kichigina, Anastasiya;
Kontsevaya, Anna;
Kornev, Michael;
Leong, Darryl;
Magnus, Per;
Mathiesen, Ellisiv;
McKee, Martin;
Morgan, Katy;
Nilssen, Odd;
Plakhov, Ilya;
Quint, Jennifer;
Rapala, Alicja;
Ryabikov, Andrey;
Saburova, Lyudmila;
Schirmer, Henrik;
Shapkina, Marina;
Shiekh, Suhail;
Shkolnikov, Vladimir;
Stylidis, Michael;
Voevoda, Michael;
Westgate, Kate;
Leon, David;
(2018)
Know Your Heart: Rationale, design and conduct of a cross-sectional study of cardiovascular structure, function and risk factors in 4500 men and women aged 35-69 years from two Russian cities, 2015-18.
Wellcome Open Research, 3.
67-67-.
DOI: https://doi.org/10.12688/wellcomeopenres.14619.1
Garway-Heath, DF;
Zhu, H;
Cheng, Q;
Morgan, K;
Frost, C;
Crabb, DP;
Ho, TA;
Agiomyrgiannakis, Y;
(2018)
Combining optical coherence tomography with visual field data to rapidly detect disease progression in glaucoma: a diagnostic accuracy study.
Technical Report.
NIHR Journals Library.
DOI: https://doi.org/10.3310/hta22040
Harris, Tess;
Kerry, Sally;
Victor, Christina;
Iliffe, Steve;
Ussher, Michael;
Fox-Rushby, Julia;
Whincup, Peter;
Ekelund, Ulf;
Furness, Cheryl;
Limb, Elizabeth;
+13 more...
Anokye, Nana;
Ibison, Judith;
DeWilde, Stephen;
David, Lee;
Howard, Emma;
Dale, Rebecca;
Smith, Jaime;
Normansell, Rebecca;
Beighton, Carole;
Morgan, Katy;
Wahlich, Charlotte;
Sanghera, Sabina;
Cook, Derek;
(2018)
A pedometer-based walking intervention in 45- to 75-year-olds, with and without practice nurse support: the PACE-UP three-arm cluster RCT.
Health technology assessment, 22 (37).
pp. 1-274.
ISSN 1366-5278
DOI: https://doi.org/10.3310/hta22370
Imahori, Yume;
Mathiesen, Ellisiv B;
Leon, David A;
Hopstock, Laila A;
Hughes, Alun D;
Johnsen, Stein Harald;
Jørgensen, Lone;
Emaus, Nina;
Morgan, Katy E;
(2018)
The contribution of obesity to carotid atherosclerotic plaque burden in a general population sample in Norway: The Tromsø Study.
Atherosclerosis, 273.
pp. 15-20.
ISSN 0021-9150
DOI: https://doi.org/10.1016/j.atherosclerosis.2018.04.014
Kerry, Sally M;
Morgan, Katy E;
Limb, Elizabeth;
Cook, Derek G;
Furness, Cheryl;
Carey, Iain;
DeWilde, Steve;
Victor, Christina R;
Iliffe, Steve;
Whincup, Peter;
+5 more...
Ussher, Michael;
Ekelund, Ulf;
Fox-Rushby, Julia;
Ibison, Judith;
Harris, Tess;
(2018)
Interpreting population reach of a large, successful physical activity trial delivered through primary care.
BMC public health, 18 (1).
170-.
ISSN 1471-2458
DOI: https://doi.org/10.1186/s12889-018-5034-4
Leyrat, Clémence;
Morgan, Katy E;
Leurent, Baptiste;
Kahan, Brennan C;
(2018)
Response to: How to design and analyse cluster randomized trials with a small number of clusters? Comment on Leyrat et al.
International journal of epidemiology, 47 (3).
pp. 1001-1002.
ISSN 0300-5771
DOI: https://doi.org/10.1093/ije/dyy062
O'Connor, Marianne;
Morgan, Katy E;
Bailey-Straebler, Suzanne;
Fairburn, Christopher G;
Cooper, Zafra;
(2018)
Increasing the Availability of Psychological Treatments: A Multinational Study of a Scalable Method for Training Therapists.
Journal of medical Internet research, 20 (6).
e10386-.
ISSN 1439-4456
DOI: https://doi.org/10.2196/10386
2017
Cooper, Zafra;
Bailey-Straebler, Suzanne;
Morgan, Katy E;
O'Connor, Marianne E;
Caddy, Caroline;
Hamadi, Layla;
Fairburn, Christopher G;
(2017)
Using the Internet to Train Therapists: Randomized Comparison of Two Scalable Methods.
Journal of medical Internet research, 19 (10).
e355-.
ISSN 1439-4456
DOI: https://doi.org/10.2196/jmir.8336
Leyrat, Clémence;
Morgan, Katy E;
Leurent, Baptiste;
Kahan, Brennan C;
(2017)
Cluster randomized trials with a small number of clusters: which analyses should be used?
International journal of epidemiology, 47 (1).
pp. 321-331.
ISSN 0300-5771
DOI: https://doi.org/10.1093/ije/dyx169
2016
Arnup, Sarah J;
Forbes, Andrew B;
Kahan, Brennan C;
Morgan, Katy E;
McKenzie, Joanne E;
(2016)
The quality of reporting in cluster randomised crossover trials: proposal for reporting items and an assessment of reporting quality.
Trials, 17 (1).
575-.
ISSN 1745-6215
DOI: https://doi.org/10.1186/s13063-016-1685-6
Morgan, KE;
Forbes, AB;
Keogh, RH;
Jairath, V;
Kahan, BC;
(2016)
Choosing appropriate analysis methods for cluster randomised cross-over trials with a binary outcome.
Statistics in medicine, 36 (2).
pp. 318-333.
ISSN 0277-6715
DOI: https://doi.org/10.1002/sim.7137
2015
Arnup, Sarah J;
Forbes, Andrew B;
Kahan, Brennan C;
Morgan, Katy E;
McKenzie, Joanne E;
(2015)
Appropriate statistical methods were infrequently used in cluster-randomized crossover trials.
Journal of clinical epidemiology, 74.
pp. 40-50.
ISSN 0895-4356
DOI: https://doi.org/10.1016/j.jclinepi.2015.11.013