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  • William Tillett
2018

Value of the Routine Assessment of Patient Index Data 3 in Patients With Psoriatic Arthritis: Results From a Tight-Control Clinical Trial and an Observational Cohort

Coates, L. C., Tillett, W., Shaddick, G., Pincus, T., Kavanaugh, A. & Helliwell, P. S., 1 Aug 2018, In : Arthritis Care and Research. 70, 8, p. 1198-1205 8 p.

Research output: Contribution to journalArticle

Open Access
File
7 Citations (Scopus)
42 Downloads (Pure)
2016

Let's Talk about Inclusion: A Report on Patient Research Partner Involvement in the GRAPPA 2015 Annual Meeting

Campbell, W., Coates, L. C., Gladman, D. D., James, J., Lindsay, C. A., MacDonald, R., Moverley, A. R., Ogdie, A., Orbai, A-M., O'Sullivan, D., Parkinson, A., Steinkoenig, I., Tillett, W. & Goel, N., May 2016, In : The Journal of Rheumatology. 43, 5, p. 970-973 4 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)
2019

SECUKINUMAB IMPROVES GRAPPA-OMERACT CORE DOMAINS OF PSORIATIC ARTHRITIS REGARDLESS OF PREVIOUS EXPOSURE TO A TNF INHIBITOR

Orbai, A-M., Elaine Husni, M., Gladman, D. D., Leung, Y. Y., Siebert, S., Tillett, W., Vis, M., Chambenoit, O., Meng, X. & Mease, P. J., 27 Jun 2019, In : Annals of the Rheumatic Diseases. 78, Suppl 2, 2 p., SAT0369.

Research output: Contribution to journalMeeting abstract

2018

Work Disability and the Cost-effectiveness of Drugs to Treat Rheumatic Diseases - Time for a New Dialogue?

Tillett, W. & Bojke, L., 1 Aug 2018, In : The Journal of Rheumatology. 45, 8, p. 1075-1077 3 p.

Research output: Contribution to journalArticle

Open Access
File
25 Downloads (Pure)
2 Citations (Scopus)
13 Downloads (Pure)

Risk of uveitis and inflammatory bowel disease in people with psoriatic arthritis: a population based cohort study

Charlton, R., Green, A., Shaddick, G., Snowball, J., Nightingale, A., Tillett, W., Smith, C. & McHugh, N., 12 Jan 2018, In : Annals of the Rheumatic Diseases. 77, 2, p. 277-280 4 p.

Research output: Contribution to journalArticle

Open Access
File
14 Citations (Scopus)
61 Downloads (Pure)
2017

Updating the Psoriatic Arthritis (PsA) core domain set: A report from the PsA workshop at OMERACT 2016

Orbai, A-M., de Wit, M., Mease, P. J., Callis Duffin, K., Elmamoun, M., Tillett, W., Campbell, W., FitzGerald, O., Gladman, D. D., Goel, N., Gossec, L., Hoejgaard, P., Leung, Y. Y., Lindsay, C., Strand, V., van der Heijde, D. M., Shea, B., Christensen, R., Coates, L., Eder, L. & 4 others, McHugh, N., Kalyoncu, U., Steinkoenig, I. & Ogdie, A., 1 Oct 2017, In : The Journal of Rheumatology. 44, 10, p. 1522-1528 160904.

Research output: Contribution to journalArticle

File
53 Downloads (Pure)
2019

Correction to: Important Treatment Outcomes for Patients with Psoriatic Arthritis: A Multisite Qualitative Study

PROMPT Study Group, 1 Aug 2019, In : The patient. 12, 4, p. 437 1 p.

Research output: Contribution to journalComment/debate

Open Access

Evaluation of the Economic Burden of Psoriatic Arthritis and the Relationship Between Functional Status and Healthcare Costs

McHugh, N., Maguire, Á., Handel, I., Tillett, W., Morris, J., Hawkins, N., Cavill, C., Korendowych, E. & Mughal, F., 31 Aug 2019, In : The Journal of Rheumatology. 46, 8, 190083.

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)
2 Downloads (Pure)
2016

Novel Composite Radiographic Score for Longitudinal Observational Studies of Psoriatic Arthritis: A Proof-of-concept Study

Tillett, W., Shaddick, G., Jadon, D., Robinson, G., Korendowych, E. & McHugh, N., 15 Jan 2016, In : The Journal of Rheumatology.

Research output: Contribution to journalArticle

File
2 Citations (Scopus)
146 Downloads (Pure)
2017

Important treatment outcomes for patients with psoriatic arthritis: a multisitequalitative study

Dures, E., Hewlett, S., Lord, J., Bowen, C., McHugh, N. & Tillett, W., 22 Feb 2017, In : The patient.

Research output: Contribution to journalArticle

Open Access
File
16 Citations (Scopus)
212 Downloads (Pure)
2019

PsAID12 Provisionally Endorsed at OMERACT 2018 as Core Outcome Measure to Assess Psoriatic Arthritis-specific Health-related Quality of Life in Clinical Trials

Orbai, A-M., Holland, R., Leung, Y. Y., Tillett, W., Goel, N., Christensen, R., McHugh, N., Gossec, L., de Wit, M., Højgaard, P., Coates, L. C., Mease, P. J., Birt, J., Fallon, L., FitzGerald, O., Ogdie, A., Shea, B., Strand, V., Callis Duffin, K., Tugwell, P. & 2 others, Beaton, D. & Gladman, D. D., 1 Aug 2019, In : The Journal of Rheumatology. 46, 1, p. 990-995 6 p.

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)
47 Downloads (Pure)
2018

Classification and Outcome Measures for Psoriatic Arthritis

Leung, Y. Y., Ogdie, A., Orbai, A-M., Tillett, W., Coates, L. C., Strand, V., Mease, P. & Gladman, D. D., 1 Oct 2018, In : Frontiers in Medicine. 5, 246.

Research output: Contribution to journalReview article

Open Access
File
3 Citations (Scopus)
11 Downloads (Pure)

GRAPPA-OMERACT initiative to standardise outcomes in psoriatic arthritis clinical trials and longitudinal observational studies

Tillett, W., Orbai, A-M., Ogdie, A., Leung, Y. Y., Strand, V., Gladman, D. D., Mease, P. J. & Coates, L. C., 1 May 2018, In : Annals of the Rheumatic Diseases. 77, 5, p. 1-1 1 p., e23.

Research output: Contribution to journalLetter

Open Access
File
7 Citations (Scopus)
164 Downloads (Pure)
2019

Oxford Textbook of Psoriatic Arthritis: Plain Radiography

Tillett, W., 1 Aug 2019, Oxford Textbook of Psoriatic Arthritis. FitzGerald, O. & Gladman, D. (eds.). Oxford University Press, p. 147-154 7 p. (Oxford Textbooks in Rheumatology).

Research output: Chapter in Book/Report/Conference proceedingChapter

Open Access
File
5 Downloads (Pure)

Endorsement of the 66/68 joint count for the measurement of musculoskeletal disease activity: OMERACT 2018 Psoriatic Arthritis workshop report

Duarte-García, A., Leung, Y. Y., Coates, L. C., Beaton, D., Christensen, R., Craig, E. T., de Wit, M., Eder, L., Fallon, L., FitzGerald, O., Gladman, D. D., Goel, N., Holland, R., Lindsay, C., Maxwell, L., Mease, P., Orbai, A. M., Shea, B., Strand, V., Veale, D. J. & 2 others, Tillett, W. & Ogdie, A., 1 Aug 2019, In : The Journal of Rheumatology. 46, 8, p. 996-1005 10 p.

Research output: Contribution to journalArticle

Open Access
File
4 Citations (Scopus)
40 Downloads (Pure)

ACHIEVEMENT OF PASDAS LOW DISEASE ACTIVITY AND VERY LOW DISEASE ACTIVITY IN PATIENTS WITH PSORIATIC ARTHRITIS TREATED WITH CERTOLIZUMAB PEGOL OVER 4 YEARS AND THE OVERLAP WITH DAPSA AND MDA DISEASE ACTIVITY TARGETS

Coates, L. C., Merola, J. F., Fitzgerald, O., Kavanaugh, A., Gottlieb, A. B., Tillett, W., Bauer, L., Hoepken, B., Nurminen, T., Mease, P. J., Helliwell, P. & Heijde, D. V. D., 27 Jun 2019, In : Annals of the Rheumatic Diseases. 78, Suppl 2, 2 p., AB0742.

Research output: Contribution to journalMeeting abstract

PSAID9 IN PATIENTS WITH ACTIVE PSORIATIC ARTHRITIS TREATED WITH FILGOTINIB VS PLACEBO: RESULTS FROM EQUATOR, A RANDOMIZED, PHASE 2 STUDY

Orbai, A-M., Ogdie, A., Gossec, L., Tillett, W., Leung, Y. Y., Gao, J., Trivedi, M., Tasset, C., Meuleners, L., Besuyen, R., Hendrikx, T. & Coates, L. C., 27 Jun 2019, In : Annals of the Rheumatic Diseases. 78, Suppl 2, SAT0367.

Research output: Contribution to journalMeeting abstract

Psoriatic Arthritis

Tillett, W., 17 Dec 2019, Conn's Current Therapy 2020. Kellerman, R. (ed.). 1st ed. Elsevier

Research output: Chapter in Book/Report/Conference proceedingChapter

2017

Composite Measures of Impact and Activity in Psoriatic Arthritis: A Conceptual Framework

Tillett, W., Mar 2017, In : The Journal of Rheumatology. 44, 3, p. 268-270 3 p.

Research output: Contribution to journalArticle

2016

The natural history of psoriatic arthritis

Tillett, W. & Helliwell, P. H., 2016, Psoriatic Arthritis and Psoriasis: Pathology and Clinical Aspects - Part II. Adebajo, A., Boehncke, W-H., Gladman, D. D. & Mease, P. J. (eds.). Switzerland: Springer International Publishing, p. 39-42

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)
2017

Defining Outcome Measures for Psoriatic Arthritis: A Report from the GRAPPA-OMERACT Working Group

Ogdie, A., de Wit, M., Callis Duffin, K., Campbell, W., Chau, J., Coates, L. C., Eder, L., Elmamoun, M., FitzGerald, O., Gladman, D. D., Goel, N., James, J. P., Kalyoncu, U., Latella, J., Lindsay, C., Mease, P. J., O'Sullivan, D., Steinkoenig, I., Strand, V., Tillett, W. & 1 others, Orbai, A-M., 1 May 2017, In : The Journal of Rheumatology. 44, 5, p. 697-700 4 p.

Research output: Contribution to journalArticle

18 Citations (Scopus)
2018

A systematic review of measurement properties of patient reported outcome measures in psoriatic arthritis: A GRAPPA-OMERACT initiative

Højgaard, P., Klokker, L., Orbai, A-M., Holmsted, K., Bartels, E. M., Leung, Y. Y., Goel, N., de Wit, M., Gladman, D. D., Mease, P. J., Dreyer, L., Kristensen, L. E., Fitzgerald, O., Tillett, W., Gossec, L., Helliwell, P., Strand, V., Ogdie, A., Terwee, C. B. & Christensen, R., 1 Apr 2018, In : Seminars in Arthritis and Rheumatism. 47, 5, p. 654-665 12 p.

Research output: Contribution to journalReview article

Open Access
File
16 Citations (Scopus)
54 Downloads (Pure)
2019

Trajectory of radiographic change over a decade: the effect of transition from conventional synthetic disease-modifying antirheumatic drugs to anti-tumour necrosis factor in patients with psoriatic arthritis

Allard, A., Antony, A., Shaddick, G., Jadon, D. R., Cavill, C., Robinson, G., Korendowych, E., McHugh, N. & Tillett, W., 1 Feb 2019, In : Rheumatology. 58, 2, p. 269-273 5 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
24 Downloads (Pure)
2017

International patient and physician consensus on a psoriatic arthritis core outcome set for clinical trials

Orbai, A-M., de Wit, M., Mease, P., Shea, J. A., Gossec, L., Leung, Y. Y., Tillett, W., Elmamoun, M., Callis Duffin, K., Campbell, W., Christensen, R., Coates, L., Dures, E., Eder, L., FitzGerald, O., Gladman, D., Goel, N., Grieb, S. D., Hewlett, S., Hoejgaard, P. & 7 others, Kalyoncu, U., Lindsay, C., McHugh, N., Shea, B., Steinkoenig, I., Strand, V. & Ogdie, A., 1 Apr 2017, In : Annals of the Rheumatic Diseases. 76, 4, p. 673-680

Research output: Contribution to journalArticle

Open Access
70 Citations (Scopus)
2019

Psoriatic nail dystrophy is associated with erosive disease in the distal interphalangeal joints in psoriatic arthritis: a retrospective cohort study

Antony, A., Allard, A., Rambojun, A., Lovell, C. R., Shaddick, G., Robinson, G., Jadon, D. R., Holland, R., Cavill, C., Korendowych, E., McHugh, N. J. & Tillett, W., 1 Sep 2019, In : The Journal of Rheumatology. 46, 9, p. 1097-1102 6 p.

Research output: Contribution to journalArticle

Open Access
File
12 Downloads (Pure)
2017

Interval between onset of psoriasis and psoriatic arthritis comparing the UK Clinical Practice Research Datalink with a hospital-based cohort

Tillett, W., Charlton, R., Nightingale, A., Snowball, J., Green, A., Smith, C., Shaddick, G., McHugh, N. & PROMPT study group, 1 Dec 2017, In : Rheumatology. 56, 12, p. 2109-2113

Research output: Contribution to journalArticle

Open Access
File
12 Downloads (Pure)

Risk of uveitis and inflammatory bowel disease in people with psoriatic arthritis: a population based cohort study

PROMPT Study Group, 2017, Rheumatology. Suppl 2 ed. Vol. 56. 2 p. 048

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2019

Diagnosis and initial management in psoriatic arthritis: a qualitative study with patients

Dures, E., Bowen, C., Brooke, M., Lord, J., Tillett, W., McHugh, N. & Hewlett, S., 26 Aug 2019, In : Rheumatology Advances in Practice. 3, 2, rkz022.

Research output: Contribution to journalArticle

Open Access
1 Citation (Scopus)
2016

Report of the GRAPPA-OMERACT Psoriatic Arthritis Working Group from the GRAPPA 2015 Annual Meeting

Orbai, A-M., Mease, P. J., de Wit, M., Kalyoncu, U., Campbell, W., Tillett, W., Eder, L., Elmamoun, M., FitzGerald, O., Gladman, D. D., Goel, N., Gossec, L., Lindsay, C. A., Steinkoenig, I., Helliwell, P. S., McHugh, N. J., Strand, V. & Ogdie, A., May 2016, In : The Journal of Rheumatology. 43, 5, p. 965-969 5 p.

Research output: Contribution to journalArticle

Open Access
File
18 Citations (Scopus)
132 Downloads (Pure)
2018

Exploring the illness representations of people with psoriatic arthritis: A secondary analysis of focus group data

On behalf of the PROMPT Study Group, 1 Jul 2018, In : Rheumatology Advances in Practice. 2, 2, p. 1-7 7 p.

Research output: Contribution to journalArticle

Open Access
1 Citation (Scopus)

GRAPPA-OMERACT consensus-based recommendations and research agenda for use of composite measures and treatment targets in PsA

Coates, L. C., Fitzgerald, O., Merola, J. F., Smolen, J., van Mens, L. J. J., Bertheussen, H., Boehncke, W-H., Callis Duffin, K., Campbell, W., de Wit, M., Gladman, D. D., Gottlieb, A., James, J., Kavanaugh, A. F., Kristensen, L. E., Kvien, T. K., Luger, T., McHugh, N., Mease, P. J., Nash, P. & 6 others, Ogdie, A., Rosen, C. F., Strand, V., Tillett, W., Veale, D. J. & Helliwell, P. S., 31 Mar 2018, In : Arthritis & Rheumatology. 70, 3, p. 345-355

Research output: Contribution to journalArticle

Open Access
File
30 Citations (Scopus)
33 Downloads (Pure)
2017

Effect of anti-TNF and conventional synthetic disease-modifying anti-rheumatic drug treatment on work disability and clinical outcome in a multicentre observational cohort study of psoriatic arthritis

Tillett, W., Shaddick, G., Jobling, A., Askari, A., Cooper, A., Creamer, P., Clunie, G., Helliwell, P. S., James, J., Kay, L., Korendowych, E., Lane, S., Packham, J., Shaban, R., Thomas, M. L., Williamson, L. & McHugh, N., 1 Apr 2017, In : Rheumatology. 56, 4, p. 603-612

Research output: Contribution to journalArticle

Open Access
File
6 Citations (Scopus)
171 Downloads (Pure)
2019

A Threshold of Meaning for Work Disability Improvement in Psoriatic Arthritis Measured by the Work Productivity and Activity Impairment Questionnaire

Tillett, W., Lin, C-Y., Zbrozek, A., Sprabery, A. T. & Birt, J., 1 Sep 2019, In : Rheumatology and therapy. 6, 3, p. 379-391 13 p.

Research output: Contribution to journalArticle

Open Access

The GRAPPA-OMERACT Psoriatic Arthritis Working Group at the 2018 Annual Meeting: Report and Plan for Completing the Core Outcome Measurement Set

Leung, Y. Y., Orbai, A-M., Ogdie, A., Coates, L. C., de Wit, M., Eder, L., Gladman, D. D., Goel, N., Mease, P. J., Strand, V., FitzGerald, O. & Tillett, W., 1 Jun 2019, In : The Journal of rheumatology. Supplement. 95, p. 33-37 5 p.

Research output: Contribution to journalArticle

Open Access
File
2018

The Benefits and Challenges of Setting Up a Longitudinal Psoriatic Arthritis Database

Gladman, D. D., Coates, L. C., Jadon, D. R., Tillett, W., Mease, P. J. & Vis, M., 1 Jun 2018, In : The Journal of rheumatology. Supplement. 94, p. 26-29 4 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
20 Downloads (Pure)

Content and Face Validity and Feasibility of 5 Candidate Instruments for Psoriatic Arthritis Randomized Controlled Trials: The PsA OMERACT Core Set Workshop at the GRAPPA 2017 Annual Meeting

Holland, R., Tillett, W., Ogdie, A., Leung, Y. Y., Gladman, D. D., Callis Duffin, K., Coates, L. C., Mease, P. J., Eder, L., Strand, V., Elmamoun, M., Højgaard, P., Chau, J., de Wit, M., Goel, N., Lindsay, C. A., FitzGerald, O., Shea, B., Beaton, D. & Orbai, A-M., 1 Jun 2018, In : The Journal of rheumatology. Supplement. 94, p. 17-25 9 p.

Research output: Contribution to journalArticle

Open Access
File
4 Citations (Scopus)
22 Downloads (Pure)
2019

RELATIVE IMPACT OF JOINT AND SKIN SYMPTOMS ON QUALITY OF LIFE AND WORK PRODUCTIVITY IN PSORIATIC ARTHRITIS (PSA) PATIENTS

Tillett, W., Merola, J. F., Thaçi, D., Booth, N., Lobosco, S., Milligan, G., Hufford, M., Birt, J., Boehncke, W-H. & Holdsworth, E., 27 Jun 2019, In : Annals of the Rheumatic Diseases. 78, Suppl 2, 2 p., AB0783.

Research output: Contribution to journalMeeting abstract

2018

Validation of the Psoriatic Arthritis Impact of Disease (PsAID) Questionnaire and its potential as a single-item outcome measure in clinical practice

Holland, R., Tillett, W., Korendowych, E., Cavill, C., Waldron, N., Brooke, M. & McHugh, N. J., 12 Feb 2018, In : Annals of the Rheumatic Diseases. 77, 3, p. 343-347 5 p.

Research output: Contribution to journalArticle

Open Access
File
15 Citations (Scopus)
42 Downloads (Pure)
2019

Risk of type 2 diabetes and cardiovascular disease in an incident cohort of people with psoriatic arthritis: a population-based cohort study

PROMPT Study Group, 1 Jan 2019, In : Rheumatology. 58, 1, p. 144-148 5 p.

Research output: Contribution to journalArticle

Open Access
File
6 Citations (Scopus)
29 Downloads (Pure)
2017

Interval between onset of psoriasis and psoriatic arthritis: comparing UK Clinical Practice Research Datalink with a hospital-based cohort.

PROMPT Study Group, Apr 2017, Rheumatology . Suppl 2 ed. Vol. 56. 049

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Citations (Scopus)

A Multicenter Nominal Group Study to Rank Outcomes Important to Patients, and Their Representation in Existing Composite Outcome Measures for Psoriatic Arthritis

Tillett, W., Dures, E., Hewlett, S., Helliwell, P. S., Fitzgerald, O., Brooke, M., James, J., Lord, J., Bowen, C., de Wit, M., Orbai, A-M., McHugh, N. & PROMPT study group, 4 Oct 2017, In : The Journal of Rheumatology. 44, 10, p. 1445-1452

Research output: Contribution to journalArticle

Open Access
File
7 Citations (Scopus)
148 Downloads (Pure)