Reducing contamination risk in cluster-randomized infectious disease-intervention trials

McCann, R. S., van den Berg, H., Chetwynd, A. G., Giorgi, E., Takken, W., Terlouw, D. J. & Diggle, P. J., 29/10/2018, In : International Journal of Epidemiology. 47, 6, p. 2015–2024 10 p.

Research output: Contribution to journal › Journal article

Breast-Feeding and Childhood-Onset Type 1 Diabetes: A pooled analysis of individual participant data from 43 observational studies

Cardwell, C. R., Stene, L. C., Ludvigsson, J., Rosenbauer, J., Cinek, O., Svensson, J., Perez-Bravo, F., Memon, A., Gimeno, S. G., Wadsworth, E. J. K., Strotmeyer, E. S., Goldacre, M. J., Radon, K., Chuang, L-M., Parslow, R. C., Chetwynd, A., Karavanaki, K., Brigis, G., Pozzilli, P., Urbonaite, B. & 13 others, Schober, E., Devoti, G., Sipetic, S., Joner, G., Ionescu-Tirgoviste, C., de Beaufort, C. E., Harrild, K., Benson, V., Savilahti, E., Ponsonby, A-L., Salem, M., Rabiei, S. & Patterson, C. C., 11/2012, In : Diabetes Care. 35, 11, p. 2215-2225 11 p.

Research output: Contribution to journal › Journal article

Birth order and childhood type 1 diabetes risk: a pooled analysis of 31 observational studies

Cardwell, C. R., Stene, L. C., Joner, G., Bulsara, M. K., Cinek, O., Rosenbauer, J., Ludvigsson, J., Svensson, J., Goldacre, M. J., Waldhoer, T., Jarosz-Chobot, P., Gimeno, S. G. A., Chuang, L-M., Roberts, C. L., Parslow, R. C., Wadsworth, E. J. K., Chetwynd, A., Brigis, G., Urbonaite, B., Sipetic, S. & 9 others, Schober, E., Devoti, G., Ionescu-Tirgoviste, C., de Beaufort, C. E., Stoyanov, D., Buschard, K., Radon, K., Glatthaar, C. & Patterson, C. C., 04/2011, In : International Journal of Epidemiology. 40, 2, p. 363-374 12 p.

Research output: Contribution to journal › Journal article

Birthweight and the risk of childhood-onset type 1 diabetes: a meta-analysis of observational studies using individual patient data

Cardwell, C. R., Stene, L. C., Joner, G., Davis, E. A., Cinek, O., Rosenbauer, J., Ludvigsson, J., Castell, C., Svensson, J., Goldacre, M. J., Waldhoer, T., Polanska, J., Gimeno, S. G. A., Chuang, L. -M., Parslow, R. C., Wadsworth, E. J. K., Chetwynd, A., Pozzilli, P., Brigis, G., Urbonaite, B. & 7 others, Sipetic, S., Schober, E., Ionescu-Tirgoviste, C., de Beaufort, C. E., Stoyanov, D., Buschard, K. & Patterson, C. C., 04/2010, In : Diabetologia. 53, 4, p. 641-651 11 p.

Research output: Contribution to journal › Journal article

Maternal age at birth and childhood type 1 diabetes: a pooled analysis of 30 observational studies

Cardwell, C. R., Stene, L. C., Joner, G., Bulsara, M. K., Cinek, O., Rosenbauer, J., Ludvigsson, J., Jane, M., Svensson, J., Goldacre, M. J., Waldhoer, T., Jarosz-Chobot, P., Gimeno, S. G. A., Chuang, L-M., Parslow, R. C., Wadsworth, E. J. K., Chetwynd, A., Pozzilli, P., Brigis, G., Urbonaite, B. & 8 others, Sipetic, S., Schober, E., Devoti, G., Ionescu-Tirgoviste, C., de Beaufort, C. E., Stoyanov, D., Buschard, K. & Patterson, C. C., 02/2010, In : Diabetes Care. 59, 2, p. 486-494 9 p.

Research output: Contribution to journal › Journal article

Joint modelling of repeated measurements and time-to-event outcomes: the fourth Armitage lecture.

Diggle, P. J., Sousa, I. & Chetwynd, A. G., 20/07/2008, In : Statistics in Medicine. 27, 16, p. 2981-2998 18 p.

Research output: Contribution to journal › Journal article

Second-order analysis of inhomogeneous spatial point process data.

Diggle, P. J., Gomez-Rubio, V., Brown, P. E., Chetwynd, A. G. & Gooding, S., 06/2007, In : Biometrics. 63, 2, p. 550-557 8 p.

Research output: Contribution to journal › Journal article

Cholera - a step too Farr.

Chetwynd, A. & Short, H., 06/2006, In : Significance. 3, 2, p. 88-90 3 p.

Research output: Contribution to journal › Journal article

Effect and Duration of Lung Volume Reduction Surgery: Mid-Term Results of the Brompton Trial.

Lim, E., Ali, A., Cartwright, N., Sousa, I., Chetwynd, A. G., Polkey, M., Geddes, D., Pepper, J., Diggle, P. & Goldstraw, P., 2/04/2006, In : The Thoracic and Cardiovascular Surgeon Reports. 54, 3, p. 188-192 5 p.

Research output: Contribution to journal › Journal article

Exploratory analysis of longitudinal trials with staggered intervention times.

Chetwynd, A. G., Diggle, P. J. & Sousa, I., 07/2005, In : Biostatistics. 6, 3, p. 479-485 7 p.

Research output: Contribution to journal › Journal article

Type 1 diabetes mellitus in childhood : a matched case control study in Lancashire and Cumbria, UK.

Marshall, A. L., Chetwynd, A., Morris, J. A., Placzek, M., Smith, C., Olabi, A. & Thistlethwaite, D., 09/2004, In : Diabetic Medicine. 21, 9, p. 1035-1040 6 p.

Research output: Contribution to journal › Journal article

Asymptomatic primary biliary cirrhosis : clinical features, prognosis and symptom progression in a large population based cohort.

Prince, M. I., Chetwynd, A., Craig, W. L., Metcalf, J. V. & James, O. F. W., 3/06/2004, In : Gut. 53, 6, p. 865-870 6 p.

Research output: Contribution to journal › Journal article

Do clever brains age more slowly? Further exploration of a nun result.

Rabbitt, P., Chetwynd, A. & McInnes, L., 02/2003, In : British Journal of Psychology. 94, 1, p. 63-71 9 p.

Research output: Contribution to journal › Journal article

Estimation of Spatial Variation in Risk Using Matched Case-control Data.

Jarner, M. F., Diggle, P. J. & Chetwynd, A. G., 12/2002, In : Biometrical Journal. 44, 8, p. 936-945 10 p.

Research output: Contribution to journal › Journal article

Survival and symptom progression in a geographically based cohort of patients with primary biliary cirrhosis: Follow-up for up to 28 years.

Prince, M. I., Chetwynd, A. G., Craig, W., Metcalf, J. & James, O. F. W., 10/2002, In : Gastroenterology. 123, 4, p. 1044-1051 8 p.

Research output: Contribution to journal › Journal article

Individual inconsistency across measures of inhibition: an investigation of the construct validity of inhibition in older adults.

Shilling, V., Chetwynd, A. G. & Rabbitt, P. M. A., 2002, In : Neuropsychologia. 40, 6, p. 605-620 16 p.

Research output: Contribution to journal › Journal article

Multivariate analysis of survival in a large population based cohort of patients with primary biliary cirrhosis (PBC)

James, O., Prince, M., Craig, W., Metcalf, J. & Chetwynd, A., 2002, In : Hepatology. 36, Supplement 4, p. 499A 1 p., 1343.

Research output: Contribution to journal › Meeting abstract

The geographical distribution of primary biliary cirrhosis in a well-defined cohort.

Prince, M. I., Chetwynd, A. G., Diggle, P. J., Jarner, M., Metcalf, J. V. & James, O. F. W., 12/2001, In : Hepatology. 34, 6, p. 1083-1088 6 p.

Research output: Contribution to journal › Journal article

Investigation of spatial clustering from matched and stratified case-control studies.

Chetwynd, A. G., Diggle, P. J., Marshall, A. & Parslow, R., 4/09/2001, In : Biostatistics. 2, 3, p. 277-293 17 p.

Research output: Contribution to journal › Journal article

Supporting student learning

Anderson, J., Austin, K., Barnard, T., Chetwynd, A. & Kahn, P., 1/12/2000, In : Teaching Mathematics and its Applications. 19, 4, p. 166-172 7 p.

Research output: Contribution to journal › Journal article

Long-term survival in "modern" PBC is significantly better than the Mayo model predicts.

Prince, M. I., Chetwynd, A. G., Diggle, P. J., Metcalf, J. V. & James, O. F., 04/2000, In : Journal of Hepatology. 34, Supple, p. 216-216 1 p.

Research output: Contribution to journal › Journal article

Evidence of Spatial variation in risk and clustering in PBC

James, O. F. W., Bhopal, R. S., Chetwynd, A., Diggle, P., Jarnet, M. & Metcalf, J. V., 1999, In : Hepatology. 30, Supplement 4, p. 407A 987.

Research output: Contribution to journal › Meeting abstract

The significance of ideas in undergraduate mathematics.

Kahn, P. E., Anderson, J., Austin, K., Barnard, A., Jagger, J. & Chetwynd, A. G., 06/1998, In : Teaching Mathematics and its Applications. 17, 2, p. 78-85 8 p.

Research output: Contribution to journal › Journal article

On estimating the reduced second moment measure of a stationary spatial point process

Chetwynd, A. G. & Diggle, P. J., 03/1998, In : Australian and New Zealand Journal of Statistics. 40, 1, p. 11-15 5 p.

Research output: Contribution to journal › Journal article

A mixture model for sucking patterns of brest-fed infants.

Chetwynd, A. G., Diggle, P., Drewett, R. & Young, B., 28/02/1998, In : Statistics in Medicine. 17, 4, p. 395-405 11 p.

Research output: Contribution to journal › Journal article

On estimating the reduced second moment measure of a stationery spatial point process.

Chetwynd, A. G. & Diggle, P., 1998, In : Australian Journal of Statistics. 40, 1, p. 11-15 5 p.

Research output: Contribution to journal › Journal article

Avoiding partial Latin squares and intricacy.

Chetwynd, A. G. & Rhodes, S. J., 1/12/1997, In : Discrete Mathematics. 177, 1-3, p. 17-32 16 p.

Research output: Contribution to journal › Journal article

Avoiding multiple entry arrays.

Chetwynd, A. G. & Rhodes, S. J., 08/1997, In : Journal of Graph Theory. 25, 4, p. 257-266 10 p.

Research output: Contribution to journal › Journal article

Electron microscopy and digital image analysis.

Henderson, M. & Chetwynd, A. G., 1997, In : Today's Life Science. p. 22-29 8 p.

Research output: Contribution to journal › Journal article

Sucking patterns in breast fed babies.

Young, B., Drewett, R., Chetwynd, A. G. & Diggle, P., 11/1996, In : Journal of Reproductive and Infant Psychology. 14, 4, p. 299-324 26 p.

Research output: Contribution to journal › Journal article

An improvement of Hind's upper bound on the total chromatic number.

Chetwynd, A. G. & Haggkvist, R. A., 06/1996, In : Combinatorics, Probability and Computing. 5, 2, p. 99-104 6 p.

Research output: Contribution to journal › Journal article

Learning to teach.

Chetwynd, A. G., 1996, In : Teaching and Learning Undergraduate Mathematics.

Research output: Contribution to journal › Journal article

Formal description of multimedia systems : an assessment of potential techniques.

Bowman, H., Blair, L., Blair, G. S. & Chetwynd, A. G., 12/1995, In : Computer Communications. 18, 12, p. 964-977 14 p.

Research output: Contribution to journal › Journal article

Formal specification and verification of multimedia systems in open distributed processing.

Blair, L., Blair, G. S., Bowman, H. & Chetwynd, A. G., 30/09/1995, In : Computer Standards and Interfaces. 17, 5-6, p. 413-436 24 p.

Research output: Contribution to journal › Journal article

Chessboard squares.

Chetwynd, A. G. & Rhodes, S. J., 28/06/1995, In : Discrete Mathematics. 141, 1-3, p. 47-59 13 p.

Research output: Contribution to journal › Journal article

Second-order analysis of space-time disease clustering

Diggle, P. J., Chetwynd, A. G., Häggkvist, R. & Morris, S. E., 06/1995, In : Statistical Methods in Medical Research. 4, 2, p. 124-136 13 p.

Research output: Contribution to journal › Journal article

Time versus abstraction in formal description.

Bowman, H., Blair, G. S., Blair, L. & Chetwynd, A. G., 1994, In : IFIP Transactions C. 22, p. 407-482 76 p.

Research output: Contribution to journal › Journal article

Some upper bounds on the list and total chromatic numbers of multigraphs.

Haggkvist, R. A. & Chetwynd, A. G., 11/1992, In : Journal of Graph Theory. 16, 5, p. 503-516 14 p.

Research output: Contribution to journal › Journal article

Alternating Hamiltonian cycles in two coloured complete bipartite graphs.

Chetwynd, A. G. & Hilton, A. J. W., 06/1992, In : Journal of Graph Theory. 16, 2, p. 153-158 6 p.

Research output: Contribution to journal › Journal article

An introduction to LOTOS through a worked example.

Drayton, L. D., Chetwynd, A. G. & Blair, G. S., 03/1992, In : Computer Communications. 15, 2, p. 70-85 16 p.

Research output: Contribution to journal › Journal article

Contribution to discussion meeting on the future of honours degree courses in mathematics and statistics.

Chetwynd, A. G. & Diggle, P. J., 1992, In : Journal of the Royal Statistical Society: Series A Statistics in Society. 155, p. 209-210 2 p.

Research output: Contribution to journal › Journal article

Outline symmetric latin squares.

Chetwynd, A. G. & Hilton, A. J. W., 10/12/1991, In : Discrete Mathematics. 97, 1-3, p. 101-117 17 p.

Research output: Contribution to journal › Journal article

On the total chromatic number of graphs of high minimum degree.

Chetwynd, A. G., Hilton, A. J. W. & Zhao, C., 10/1991, In : Journal of the London Mathematical Society. Series, 2, p. 193-202 10 p.

Research output: Contribution to journal › Journal article

Second--order analysis of spatial clustering for inhomogeneous populations.

Diggle, P. J. & Chetwynd, A. G., 1991, In : Biometrics. 47, p. 1155-1163 9 p.

Research output: Contribution to journal › Journal article

The chromatic index of graphs with large maximum degree, where the number of vertices of maximum degree is relatively small.

Chetwynd, A. G. & Hilton, A. J. W., 02/1990, In : Journal of Combinatorial Theory, Series B. 48, 1

Research output: Contribution to journal › Journal article

On the Δ-subgraph of graphs which are critical with respect to the chromatic index.

Chetwynd, A. G., Hilton, A. J. W. & Hoffman, D. G., 04/1989, In : Journal of Combinatorial Theory, Series B. 46, 2, p. 240-275 36 p.

Research output: Contribution to journal › Journal article

A note on list colourings.

Chetwynd, A. G. & Haggkvist, R. A., 03/1989, In : Journal of Graph Theory. 13, 1, p. 87-95 9 p.

Research output: Contribution to journal › Journal article

A Δ-subgraph condition for a graph to be class 1.

Chetwynd, A. G. & Hilton, A. J. W., 02/1989, In : Journal of Combinatorial Theory, Series B. 46, 1, p. 37-45 9 p.

Research output: Contribution to journal › Journal article

1-Factorizing Regular Graphs of High Degree-an Improved Bound

Chetwynd, A. G. & Hilton, A. J. W., 1/01/1989, In : Annals of Discrete Mathematics. 43, C, p. 103-112 10 p.

Research output: Contribution to journal › Journal article

Snarks and k-snarks.

Chetwynd, A. G. & Hilton, A. J. W., 1988, In : Ars Combinatorica. 25C, p. 39-54 16 p.

Research output: Contribution to journal › Journal article

Some refinements of the total chromatic number conjecture.

Chetwynd, A. G. & Hilton, A. J. W., 1988, In : Congressus Numerantium. 66, p. 195-216 22 p.

Research output: Contribution to journal › Journal article

The edge chromatic class of graphs with maximum degree at least $|V| - 3$.

Chetwynd, A. G. & Hilton, A. J. W., 1988, In : Annals of Discrete Mathematics. 41, C, p. 91-110 20 p.

Research output: Contribution to journal › Journal article

The existence of multigraphs with a given degree sequence and given chromatic index.

Chetwynd, A. G. & Hilton, A. J. W., 1988, In : Congressus Numerantium. 58, p. 347-356 10 p.

Research output: Contribution to journal › Journal article

Decomposition of snarks.

Cameron, P. J., Cheywynd, A. G. & Watkins, J. J., 1987, In : Journal of Graph Theory. 11, 1, p. 13-19 7 p.

Research output: Contribution to journal › Journal article

The edge-chromatic class of regular graphs of degree 4 and their complements

Chetwynd, A. & Hilton, A., 1987, In : Discrete Applied Mathematics. 16, 2, p. 125-134 10 p.

Research output: Contribution to journal › Journal article

What mathematics for computer scientists

Chetwynd, A. & Cooke et al, DJ., 1987, In : The Computer Bulletin. 3, 3, p. 36-37 2 p.

Research output: Contribution to journal › Journal article

Critical star multigraphs.

Chetwynd, A. G. & Hilton, A. J. W., 12/1986, In : Graphs and Combinatorics. 2, 1, p. 209-221 13 p.

Research output: Contribution to journal › Journal article

Star multigraphs with three vertices of maximum degree.

Chetwynd, A. G. & Hilton, A. J. W., 09/1986, In : Mathematical Proceedings of the Cambridge Philosophical Society. 100, 2, p. 303-317 15 p.

Research output: Contribution to journal › Journal article

Regular Graphs of High Degree are 1-Factorizable.

Chetwynd, A. G. & Hilton, A. J. W., 03/1985, In : Proceedings of the London Mathematical Society. Series, 2, p. 193-206 14 p.

Research output: Contribution to journal › Journal article

Chromatic index of graphs of even order with many edges.

Chetwynd, A. G. & Hilton, A. J. W., 1984, In : Journal of Graph Theory. 8, 4, p. 463-470 8 p.

Research output: Contribution to journal › Journal article

On the intricacy of combinatorial construction problems.

Bailey, R. A., Cameron, P. J., Chetwynd, A. G., Daykin, D. E., Hilton, A. J. W., Holroyd, F. C., Mason, J. H., Nelson, R., Rowley, C. A. & Woodall, D. R., 1984, In : Discrete Mathematics. 50, 1, p. 71-97 27 p.

Research output: Contribution to journal › Journal article

The chromatic index of graphs with at most four vertices of maximum degree.

Chetwynd, A. G. & Hilton, A. J. W., 1984, In : Congressus Numerantium. 43, p. 221-248 28 p.

Research output: Contribution to journal › Journal article

Chromatic index critical graphs of order 9.

Chetwynd, A. G. & Yap, H. P., 1983, In : Discrete Mathematics. 47, 1, p. 23-33 11 p.

Research output: Contribution to journal › Journal article

The rise and fall of the critical graph conjecture.

Chetwynd, A. G. & Wilson, R. J., 1983, In : Journal of Graph Theory. 7, 2, p. 153-157 5 p.

Research output: Contribution to journal › Journal article