Demonstration of response in rheumatoid arthritis patients who are nonresponders according to the american college of rheumatology 20% criteria : the paradox of beneficial treatment effects in nonresponders in the ATTRACT trialBOERS, Maarten.Arthritis and rheumatism. 2001, Vol 44, Num 11, pp 2703-2704, issn 0004-3591Article

Null bar and null zone are better than the error bar to compare group means in graphsBOERS, Maarten.Journal of clinical epidemiology. 2004, Vol 57, Num 7, pp 712-715, issn 0895-4356, 4 p.Article

Understanding the window of opportunity concept in early rheumatoid arthritisBOERS, Maarten.Arthritis and rheumatism. 2003, Vol 48, Num 7, pp 1771-1774, issn 0004-3591, 4 p.Article

Standing on the promises: First wave validation reports of the Patient-Reported Outcome Measurement Information SystemBOERS, Maarten.Journal of clinical epidemiology. 2010, Vol 63, Num 11, pp 1167-1168, issn 0895-4356, 2 p.Article

Can We Decide Which Outcomes Should Be Measured in Every Clinical Trial? A Scoping Review of the Existing Conceptual Frameworks and Processes to Develop Core Outcome Sets : OMERACT 11: The OMERACT Filter 2.0IDZERDA, Leanne; RADER, Tamara; TUGWELL, Peter et al.Journal of rheumatology. 2014, Vol 41, Num 5, pp 986-993, issn 0315-162X, 8 p.Article

Examining the Similarities and Differences of OMERACT Core Sets Using the ICF: First Step Towards an Improved Domain Specification and Development of an Item Pool to Measure Functioning and HealthESCORPIZO, Reuben; BOERS, Maarten; STUCKI, Gerold et al.Journal of rheumatology. 2011, Vol 38, Num 8, pp 1739-1744, issn 0315-162X, 6 p.Article

Use of the American college of rheumatology N (ACR-N) index of improvement in rheumatoid arthritis : Argument in FavorSIEGEL, Jeffrey N; ZHEN, Bo-Guang; BOERS, Maarten et al.Arthritis and rheumatism. 2005, Vol 52, Num 6, pp 1637-1645, issn 0004-3591, 9 p.Article

Updating the OMERACT Filter at OMERACT 11 : OMERACT 11: The OMERACT Filter 2.0KIRWAN, John R; BOERS, Maarten; TUGWELL, Peter et al.Journal of rheumatology. 2014, Vol 41, Num 5, pp 975-977, issn 0315-162X, 3 p.Article

American College of rheumatology criteria for improvement in rheumatoid arthritis should only be calculated from scores that decrease on improvementBOERS, Maarten; VERHOEVEN, Arco C; VAN DER LINDEN, Sjef et al.Arthritis and rheumatism. 2001, Vol 44, Num 5, pp 1052-1055, issn 0004-3591Article

Posttraumatic stress in aging world war II survivors after a fireworks disaster : A controlled prospective studyBRAMSEN, Inge; VAN DER PLOEG, Henk M; BOERS, Maarten et al.Journal of traumatic stress. 2006, Vol 19, Num 2, pp 291-300, issn 0894-9867, 10 p.Article

Prevention or retardation of joint damage in rheumatoid arthritis: Issues of definition, evaluation and interpretation of plain radiographsBOERS, Maarten; VAN DER HEIJDE, Désirée M. F. M.Drugs (Basel). 2002, Vol 62, Num 12, pp 1717-1724, issn 0012-6667, 8 p.Article

Deriving an operational definition of low disease activity state in rheumatoid arthritisBOERS, Maarten; ANDERSON, Jennifer J; FELSON, David T et al.Journal of rheumatology. 2003, Vol 30, Num 5, pp 1112-1114, issn 0315-162X, 3 p.Conference Paper

Impact of imaging in established rheumatoid arthritisVAN DER HEIJDE, Désirée.Baillière's best practice & research. Clinical rheumatology. 2003, Vol 17, Num 5, pp 783-790, issn 1521-6942, 8 p.Article

Genetics in rheumatoid arthritisHUIZINGA, Tom W. J.Baillière's best practice & research. Clinical rheumatology. 2003, Vol 17, Num 5, pp 703-716, issn 1521-6942, 14 p.Article

Environmental factors and the outcome of rheumatoid arthritisSYMMONS, Deborah P. M.Baillière's best practice & research. Clinical rheumatology. 2003, Vol 17, Num 5, pp 717-727, issn 1521-6942, 11 p.Article

Quantitative measures for assessing rheumatoid arthritis in clinical trials and clinical carePINCUS, Theodore; SOKKA, Tuulikki.Baillière's best practice & research. Clinical rheumatology. 2003, Vol 17, Num 5, pp 753-781, issn 1521-6942, 29 p.Article

Rheumatoid arthritis in the developing worldASGAR ALI KALLA; TIKLY, Mohammed.Baillière's best practice & research. Clinical rheumatology. 2003, Vol 17, Num 5, pp 863-875, issn 1521-6942, 13 p.Article

International consensus conference on outcome measures in rheumatology clinical trialsBOERS, Maarten; STRAND, Vibeke; SIMON, Lee. S et al.Journal of rheumatology. 2007, Vol 34, Num 3, pp 599-599, issn 0315-162X, 1 p.Conference Paper

OMERACT 6 Economics Working Group report: A proposal for a reference case for economic evaluation in rheumatoid arthritisGABRIEL, Sherine; DRUMMOND, Michael; MAETZEL, Andreas et al.Journal of rheumatology. 2003, Vol 30, Num 4, pp 886-890, issn 0315-162X, 5 p.Conference Paper

A first step to assess harm and benefit in clinical trials in one scaleBOERS, Maarten; BROOKS, Peter; FRIES, James F et al.Journal of clinical epidemiology. 2010, Vol 63, Num 6, pp 627-632, issn 0895-4356, 6 p.Article

At what age could screening for familial retinoblastoma be stopped? A register based study 1945-98MOLL, Annette C; IMHOF, Saskia M; SCHOUTEN-VAN MEETEREN, Antoinette Y. N et al.British journal of ophthalmology. 2000, Vol 84, Num 10, pp 1170-1172, issn 0007-1161Article

Pharmacological treatment of established rheumatoid arthritisJUNG-AH LEE, Susan; KAVANAUGH, Arthur.Baillière's best practice & research. Clinical rheumatology. 2003, Vol 17, Num 5, pp 811-829, issn 1521-6942, 19 p.Article

Toward less futile surgery in non-small cell lung cancer? A randomized clinical trial to evaluate the cost-effectiveness of positron emission tomographyVAN TINTEREN, Harm; HOEKSTRA, Otto S; SMIT, Egbert F et al.Controlled clinical trials. 2001, Vol 22, Num 1, pp 89-98, issn 0197-2456Article

Reliability of measures of disease activity and disease damage in rheumatoid arthritis : Implications for smallest detectable difference, minimal clinically important difference, and analysis of treatment effects in randomized controlled trialsLASSERE, Marissa N. D; VAN DER HEIJDE, Désirée; JOHNSON, Kent R et al.Journal of rheumatology. 2001, Vol 28, Num 4, pp 892-903, issn 0315-162XConference Paper

Updating the OMERACT Filter: Implications for Patient-reported Outcomes : OMERACT 11: The OMERACT Filter 2.0KIRWAN, John R; BARTLETT, Susan J; KVIEN, Tore K et al.Journal of rheumatology. 2014, Vol 41, Num 5, pp 1011-1015, issn 0315-162X, 5 p.Article