Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where H. Karel Ronday is active.

Publication


Featured researches published by H. Karel Ronday.


Annals of the Rheumatic Diseases | 2011

The impact of four dynamic, goal-steered treatment strategies on the 5-year outcomes of rheumatoid arthritis patients in the BeSt study

N B Klarenbeek; M Güler-Yüksel; Sjoerd M van der Kooij; K. Huub Han; H. Karel Ronday; P J S M Kerstens; Patrick E H Seys; Tom W J Huizinga; Ben A. C. Dijkmans; Cornelia F Allaart

Objective To compare clinical and radiological outcomes of four dynamic treatment strategies in recent-onset rheumatoid arthritis (RA) after 5 years follow-up. Methods 508 patients with recent-onset RA were randomly assigned into four treatment strategies: sequential monotherapy; step-up combination therapy; initial combination with prednisone; initial combination with infliximab. Treatment adjustments were made based on 3-monthly disease activity score (DAS) measurements (if DAS >2.4 next treatment step; if DAS ≤2.4 during ≥6 months taper to maintenance dose; if DAS <1.6 during ≥6 months stop antirheumatic treatment). Primary and secondary outcomes were functional ability, joint damage progression, health-related quality of life and (drug-free) remission percentages. Results After 5 years, 48% of patients were in clinical remission (DAS <1.6) and 14% in drug-free remission, irrespective of initial treatment. After an earlier improvement in functional ability and quality of life with initial combination therapy, from 1 year onwards clinical outcomes were comparable across the groups and stable during 5 years. The initial combination groups showed less joint damage in year 1. In years 2–5 annual progression was comparable across the groups. After 5 years, initial combination therapy resulted in significantly less joint damage progression, reflecting the earlier clinical response. Conclusion Irrespective of initial treatment, an impressive improvement in clinical and radiological outcomes of RA patients can be achieved with dynamic treatment aimed at reducing disease activity, leading to 48% remission, 14% drug-free remission and sustained functional improvement. Starting with combination therapy resulted in earlier clinical improvement and less joint damage without more toxicity.


Annals of the Rheumatic Diseases | 2012

Remission induction therapy with methotrexate and prednisone in patients with early rheumatoid and undifferentiated arthritis (the IMPROVED study)

Kirsten Wevers-de Boer; K. Visser; L. Heimans; H. Karel Ronday; Esmeralda Molenaar; J Hans L M Groenendael; André J. Peeters; Marie-Louise Westedt; Gerard Collée; Peter B J de Sonnaville; B. Grillet; Tom W J Huizinga; Cornelia F Allaart

Aim Classifying more patients as rheumatoid arthritis (RA) (2010 American College of Rheumatology/European League Against Rheumatism criteria for RA) may improve treatment outcomes but may cause overtreatment in daily practice. The authors determined the efficacy of initial methotrexate (MTX) plus prednisone treatment in patients with 1987 or 2010 classified RA and undifferentiated arthritis (UA). Method 610 recent onset RA or UA patients started with MTX 25 mg/week and prednisone 60 mg/day tapered to 7.5 mg/day in 7 weeks. Percentage remissions after 4 months were compared between RA (1987 or 2010 criteria) and UA. Predictors for remission were identified. Results With the 2010 criteria, 19% more patients were classified as RA than with the 1987 criteria, but similar remission rates were achieved: 291/479 (61%) 2010 classified RA and 211/264 (58%) 1987 classified RA patients (p=0.52), and 79/122 (65%) UA patients (p=0.46). Anticitrullinated protein antibodies (ACPA) positive RA patients achieved more remission (66%) than ACPA negative RA patients (51%, p=0.001), but also had a lower mean baseline Disease Activity Score (DAS) (3.2 vs 3.6, p<0.001). Independent predictors for remission were male sex, low joint counts, DAS and Health Assessment Questionnaire, low body mass index and ACPA positivity. Conclusion Initial treatment with MTX and a tapered high dose of prednisone results in similarly high remission percentages after 4 months (about 60%) in RA patients, regardless of fulfilling the 1987 or 2010 criteria, and in UA patients. Independent predictors indicate that initiating treatment while disease activity is relatively low results in more remission.


Arthritis Care and Research | 2011

Effect of self-efficacy and physical activity goal achievement on arthritis pain and quality of life in patients with rheumatoid arthritis

Keegan Knittle; Véronique De Gucht; Emalie J. Hurkmans; Thea P. M. Vliet Vlieland; André J. Peeters; H. Karel Ronday; Stan Maes

To examine physical activity and achievement of physical activity goals in relation to self‐reported pain and quality of life among patients with rheumatoid arthritis (RA).


Arthritis Research & Therapy | 2015

Disease flares in rheumatoid arthritis are associated with joint damage progression and disability: 10-year results from the BeSt study

Iris M. Markusse; Linda Dirven; A. Gerards; Johannes H L M van Groenendael; H. Karel Ronday; P J S M Kerstens; Willem F. Lems; Tom W J Huizinga; Cornelia F Allaart

IntroductionFlares in patients with rheumatoid arthritis are suggested to sometimes spontaneously resolve. Targeted therapy could then entail possible overtreatment. We aimed to determine the flare prevalence in patients who are treated-to-target and to evaluate associations between flares and patient-reported outcomes and radiographic progression.MethodsIn the BeSt study, 508 patients were treated-to-target for 10 years. After initial treatment adjustments to achieve disease activity score ≤2.4, a flare was defined from the second year of follow-up onwards, according to three definitions. The first definition is a disease activity score >2.4 with an increase of ≥0.6 regardless of the previous disease activity score. The other definitions will be described in the manuscript.ResultsThe flare prevalence was 4–11 % per visit; 67 % of the patients experienced ≥1 flare during 9 years of treatment (median 0 per patient per year). During a flare, functional ability decreased with a mean difference of 0.25 in health assessment questionnaire (p < 0.001), and the odds ratios (95 % confidence intervals) for an increase in patients’ assessment of disease activity, pain and morning stiffness of ≥20 mm on a visual analogue scale were 8.5 (7.3–9.8), 8.4 (7.2–9.7) and 5.6 (4.8–6.6), respectively, compared to the absence of a flare. The odds ratio for radiographic progression was 1.7 (1.1–2.8) in a year with a flare compared to a year without a flare. The more flares a patient experienced, the higher the health assessment questionnaire at year 10 (p < 0.001) and the more radiographic progression from baseline to year 10 (p = 0.005).ConclusionFlares were associated with concurrent increase in patient’s assessment of disease activity, pain and morning stiffness, functional deterioration and development of radiographic progression with a dose–response-effect, both during the flare and long term. This suggests that intensifying treatment during a flare outweighs the risk of possible overtreatment.Trial registrationDutch trial registry NTR262 (7 September 2005) and NTR265 (8 September 2005).


Clinical Rheumatology | 2011

Promoting physical activity in patients with rheumatoid arthritis: rheumatologists’ and health professionals’ practice and educational needs

Emalie J. Hurkmans; V. De Gucht; Stan Maes; Andreas J. Peeters; H. Karel Ronday; Thea P. M. Vliet Vlieland

Despite the proven health benefits, patients with rheumatoid arthritis (RA) are found to be less physically active than their healthy peers. The aim of this study was to examine to what extent and how physical activity, defined as any bodily movement resulting in energy expenditure, is currently promoted by health care providers in patients with RA and how they perceive their competencies and educational needs. For this cross-sectional study, Dutch rheumatologists, rheumatology clinical nurse specialists, and expert physical therapists were sent a postal survey including four domains: attitudes towards physical activity in RA, advices given to patients with RA, and perceived competencies and educational needs. A total of 126 rheumatologists (50%), 132 clinical nurse specialists (56%), and 112 physical therapists (53%) returned the questionnaire. More than 90% agreed that physical activity is an important health goal for RA patients and regularly advised their patients to engage in physical activity. Public health recommendations for moderate-intensity physical activity were found attainable in RA patients by 66%, 74%, and 65% and were by used by 19%, 41%, and 49% of them, respectively. On average, respondents rated their competency to promote physical activity as low to medium, and 54%, 85%, and 72% of the respondents expressed a need for additional education regarding this topic. Rheumatologists, nurses, and physical therapists considered regular physical activity to be an important health goal for RA patients. The majority of them commonly gave advice on physical activity but felt not sufficiently competent and indicated a need for additional education.


Arthritis Research & Therapy | 2010

Accelerated hand bone mineral density loss is associated with progressive joint damage in hands and feet in recent-onset rheumatoid arthritis

M Güler-Yüksel; N B Klarenbeek; Y P M Goekoop-Ruiterman; Sjoerd M van der Kooij; A. Gerards; H. Karel Ronday; Tom W J Huizinga; Ben A. C. Dijkmans; Cornelia F Allaart; Willem F. Lems

IntroductionTo investigate whether accelerated hand bone mineral density (BMD) loss is associated with progressive joint damage in hands and feet in the first year of rheumatoid arthritis (RA) and whether it is an independent predictor of subsequent progressive total joint damage after 4 years.MethodsIn 256 recent-onset RA patients, baseline and 1-year hand BMD was measured in metacarpals 2-4 by digital X-ray radiogrammetry. Joint damage in hands and feet were scored in random order according to the Sharp-van der Heijde method at baseline and yearly up to 4 years.Results68% of the patients had accelerated hand BMD loss (>-0.003 g/cm2) in the first year of RA. Hand BMD loss was associated with progressive joint damage after 1 year both in hands and feet with odds ratios (OR) (95% confidence intervals [CI]) of 5.3 (1.3-20.9) and 3.1 (1.0-9.7). In univariate analysis, hand BMD loss in the first year was a predictor of subsequent progressive total joint damage after 4 years with an OR (95% CI) of 3.1 (1.3-7.6). Multivariate analysis showed that only progressive joint damage in the first year and anti-citrullinated protein antibody positivity were independent predictors of long-term progressive joint damage.ConclusionsIn the first year of RA, accelerated hand BMD loss is associated with progressive joint damage in both hands and feet. Hand BMD loss in the first year of recent-onset RA predicts subsequent progressive total joint damage, however not independent of progressive joint damage in the first year.


Annals of the Rheumatic Diseases | 2014

Five-year outcomes of probable rheumatoid arthritis treated with methotrexate or placebo during the first year (the PROMPT study)

Jill van Aken; L. Heimans; Henrike Gillet-van Dongen; K. Visser; H. Karel Ronday; Irene Speyer; André J. Peeters; Tom W J Huizinga; Cornelia F Allaart

Objective To assess long-term disease outcome of undifferentiated arthritis (UA) after initial treatment with methotrexate (MTX) or placebo. Methods 110 patients with UA were randomised to receive MTX (n=55) or placebo (n=55) for 1 year. After 5 years the outcomes for diagnosis (rheumatoid arthritis, 1987 criteria (RA (1987)), UA or UA in remission) and radiographic progression were compared between treatment arms and anti-citrullinated protein antibody (ACPA)-positive and -negative patients. Outcomes were recalculated for patients who, with hindsight, might have been classified at baseline as having RA according to the 2010 criteria (RA (2010)). Results 25 patients in the MTX group and 29 in the placebo group progressed to RA (1987) (p=0.45). MTX delayed progression from UA to RA (1987) but only in ACPA-positive patients. Drug-free remission was achieved in 35 patients, 20 of whom were initially treated with MTX, and 32 were ACPA-negative. ACPA-positive patients had more radiographic progression, regardless of treatment. Forty-three patients (39%) could be reclassified as having had RA (2010) at baseline, 6/24 (25%) of whom achieved remission after placebo treatment. Conclusions After 5 years there is no lasting benefit of a 1 year initial course of MTX for patients with undifferentiated arthritis, compared with initial placebo. Progression to classifiable RA was not suppressed, drug-free remission not induced and the progression of radiological damage was similar in both groups. Reclassification at baseline with the 2010 criteria showed that 25% of patients with RA (2010) achieved spontaneous drug-free remission.


Rheumatology | 2012

Sustained drug-free remission in rheumatoid arthritis after DAS-driven or non-DAS-driven therapy: a comparison of two cohort studies

Diane van der Woude; K. Visser; N B Klarenbeek; H. Karel Ronday; André J. Peeters; P J S M Kerstens; B A C Dijkmans; Tom W J Huizinga; Annette H. M. van der Helm-van Mil; Cornelia F Allaart

OBJECTIVES To compare the prevalence of and predictors for sustained drug-free remission in two cohorts of patients with recent-onset RA treated with DAS-driven therapy or non-DAS-driven therapy. METHODS Sustained drug-free remission was assessed after 5 years of follow-up in 508 patients treated with DAS-driven therapy (DAS ≤ 2.4) in a randomized treatment cohort, and in 424 patients who received non-DAS-driven therapy in a prospective inception cohort. The design of the DAS-driven cohort required systematic joint assessments with DAS-driven restart of therapy. Predictors for remission were identified by univariable and multivariable logistic regression in each cohort separately and in a combined multivariate logistic regression analysis corrected for propensity scores, including a sensitivity analysis on patients receiving initial monotherapy. RESULTS Patients in the DAS-driven cohort had more active disease at baseline, but the prevalence of sustained drug-free remission was similar after DAS-driven (9.8%) and non-DAS-driven therapy (10.6%). Among patients with ACPA, drug-free remission was more frequently achieved after DAS-driven than after non-DAS-driven therapy (5.4 vs. 2.1%, OR = 2.68, 95% CI 0.97, 7.43). Absence of ACPA and short symptom duration were independent predictors for sustained drug-free remission in both cohorts. Initial treatment choice and inclusion period were not predictive. The sensitivity analysis yielded comparable results. CONCLUSION Retrospectively comparing a DAS-driven to a non-DAS-driven therapy cohort, the occurrence and predictors of sustained drug-free remission were similar. The DAS-driven cohort had a more unfavourable prognosis. DAS-driven therapy may improve the chance of sustained drug-free remission in ACPA-positive patients with recent-onset RA.


Disability and Rehabilitation | 2008

The usage of functional wrist orthoses in patients with rheumatoid arthritis

Ingeborg G. de Boer; André J. Peeters; H. Karel Ronday; Bart Mertens; Ferdinand C. Breedveld; Theodora P. M. Vliet Vlieland

Objective. To describe the usage of functional wrist orthoses and to identify factors contributing to usage in patients with rheumatoid arthritis (RA). Methods. A multicentre, cross-sectional study, including a random selection of patients with RA visiting outpatient clinics. A total of 240/362 eligible patients (66%) completed questionnaires, a semi-structured interview and a clinical assessment. Usage was registered according to eight categories ranging from ‘always’ to ‘never’. Factors potentially associated with usage included demographic variables, the presence of wrist and hand complaints, general disease characteristics, mental and physical functioning, coping strategies and satisfaction with functional wrist orthoses. Logistic regression analyses were used to determine which factors were associated with the usage of wrist splints. Results. One hundred twenty-eight patients (53%) possessed functional wrist orthoses, whereas 74/128 (58%) were actually using them. Patients used them mainly during house keeping and cycling/driving. Main reasons for using the orthoses were relief of pain and joint protection, and main reasons for not using them were no need and problems with ease of use. Factors significantly associated with usage included the presence of wrist and hand complaints, worse physical functioning and greater satisfaction with comfort of the wrist orthoses. Conclusion. About half of patients with RA possessed functional wrist orthoses, with 58% of them actually being used. Apart from local complaints and general functional ability, satisfaction with comfort of the functional wrist orthoses appears to be an important factor for their usage. These results point at the need for additional research regarding modifiable factors associated with compliance, such as comfort and ease of use.


Arthritis & Rheumatism | 2007

Efficacy of methotrexate treatment in patients with probable rheumatoid arthritis: A double‐blind, randomized, placebo‐controlled trial

Henrike van Dongen; Jill van Aken; Leroy R Lard; K. Visser; H. Karel Ronday; Harry M. J. Hulsmans; Irene Speyer; Marie-Louise Westedt; André J. Peeters; Cornelia F Allaart; René E. M. Toes; Ferdinand C. Breedveld; Tom W J Huizinga

Collaboration


Dive into the H. Karel Ronday's collaboration.

Top Co-Authors

Avatar

Cornelia F Allaart

Leiden University Medical Center

View shared research outputs
Top Co-Authors

Avatar

Tom W J Huizinga

Leiden University Medical Center

View shared research outputs
Top Co-Authors

Avatar

André J. Peeters

Leiden University Medical Center

View shared research outputs
Top Co-Authors

Avatar

Cornelia H. M. van den Ende

Radboud University Nijmegen Medical Centre

View shared research outputs
Top Co-Authors

Avatar

Ferdinand C. Breedveld

Leiden University Medical Center

View shared research outputs
Top Co-Authors

Avatar

K. Visser

Leiden University Medical Center

View shared research outputs
Top Co-Authors

Avatar

P J S M Kerstens

Leiden University Medical Center

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Ben A. C. Dijkmans

VU University Medical Center

View shared research outputs
Researchain Logo
Decentralizing Knowledge