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Dive into the research topics where Roos Colman is active.

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Featured researches published by Roos Colman.


Annals of the Rheumatic Diseases | 2013

Microscopic gut inflammation in axial spondyloarthritis: a multiparametric predictive model

Liesbet Van Praet; Filip Van den Bosch; Peggy Jacques; Philippe Carron; Lennart Jans; Roos Colman; Elien Glorieus; Harald Peeters; Herman Mielants; Martine De Vos; Claude Cuvelier; Dirk Elewaut

Objective To assess the rates and explore predictors of microscopic gut inflammation in a cohort of patients with axial and peripheral spondyloarthritis (SpA). Methods Ileocolonoscopy was performed in 65 patients with axial and peripheral SpA from the Gent Inflammatory Arthritis and spoNdylitis cohorT. Histopathological analysis and scoring were performed by an experienced pathologist. Results Overall, 46.2% of the patients with SpA showed microscopic gut inflammation. In axial SpA, the following parameters were independently associated with gut involvement: male sex (OR=8.9, p=0.035); high disease activity measured by the Bath Ankylosing Spondylitis Disease Activity Index (OR=2.05, p=0.032); restricted spinal mobility measured by the Bath Ankylosing Spondylitis Metrology Index (OR=1.94, p=0.009); and younger age (OR=0.85, p=0.013). No clear association was found for human leucocyte antigen-B27 status, presence of peripheral arthritis, enthesitis, uveitis, psoriasis, intake of non-steroidal anti-inflammatory drugs and family history of SpA. The prevalence of gut inflammation in non-radiographic axial SpA and ankylosing spondylitis was comparable. Conclusions The prevalence of microscopic gut inflammation in SpA remains unaltered over time. Younger age (shorter symptom duration), progressive disease, male sex and higher disease activity are independently associated with microscopic gut inflammation in axial SpA.


Annals of the Rheumatic Diseases | 2014

Degree of bone marrow oedema in sacroiliac joints of patients with axial spondyloarthritis is linked to gut inflammation and male sex: results from the GIANT cohort

Liesbet Van Praet; Lennart Jans; Philippe Carron; Peggy Jacques; Elien Glorieus; Roos Colman; H. Cypers; Herman Mielants; Martine De Vos; Claude Cuvelier; Filip Van den Bosch; Dirk Elewaut

Introduction Bone marrow oedema (BMO) of the sacroiliac joints (SIJs) is a hallmark of axial spondyloarthritis (SpA). However, the relationship between the extent of BMO and disease phenotype is poorly understood. Objective To assess the link between BMO of the SIJs and gut inflammation. We have also evaluated the correlation between BMO and established disease activity parameters. Methods Sixty-eight patients with axial SpA from the Gent Inflammatory Arthritis and spoNdylitis cohorT underwent ileocolonoscopy and MRI of the SIJs. Histopathological analysis and SPondyloArthritis Research Consortium of Canada (SPARCC) scores were performed. Results A significant higher SPARCC score (median (range)) was observed in axial SpA patients showing chronic gut inflammation (16.9 (3.8–68.3)) compared with axial SpA patients showing normal gut histology (9.8 (0.0–45.0); p<0.05). In a multiple linear regression model, we identified, besides chronic gut inflammation (effect size of 11.3, 95% CI (2.1 to 20.4)), male sex (effect size of 10.5, 95% CI (3.3 to 17.8)) to be independently associated to the extent of BMO. There was a low to moderate correlation between the degree of BMO and C-reactive protein(r=0.39, p=0.002) and Ankylosing Spondylitis Disease Activity Score (r=0.35, p=0.007). Conclusions Higher degrees of BMO were observed in patients showing chronic gut inflammation. These data solidify a link between mucosal inflammation and progressive disease in axial SpA.


Radiotherapy and Oncology | 2014

Rectal toxicity after intensity modulated radiotherapy for prostate cancer: Which rectal dose volume constraints should we use?

Valérie Fonteyne; Piet Ost; Frank Vanpachtenbeke; Roos Colman; Simin Sadeghi; Geert Villeirs; Karel Decaestecker; Gert De Meerleer

BACKGROUND To define rectal dose volume constraints (DVC) to prevent ⩾grade2 late rectal toxicity (LRT) after intensity modulated radiotherapy (IMRT) for prostate cancer (PC). MATERIAL AND METHODS Six hundred thirty-seven PC patients were treated with primary (prostate median dose: 78Gy) or postoperative (prostatic bed median dose: 74Gy (adjuvant)-76Gy (salvage)) IMRTwhile restricting the rectal dose to 76Gy, 72Gy and 74Gy respectively. The impact of patient characteristics and rectal volume parameters on ⩾grade2 LRT was determined. DVC were defined to estimate the 5% and 10% risk of developing ⩾grade2 LRT. RESULTS The 5-year probability of being free from ⩾grade2 LRT, non-rectal blood loss and persisting symptoms is 88.8% (95% CI: 85.8-91.1%), 93.4% (95% CI: 91.0-95.1%) and 94.3% (95% CI: 92.0-95.9%) respectively. There was no correlation with patient characteristics. All volume parameters, except rectal volume receiving ⩾70Gy (R70), were significantly correlated with ⩾grade2 LRT. To avoid 10% and 5% risk of ⩾grade2 LRT following DVC were derived: R40, R50, R60 and R65 <64-35%, 52-22%, 38-14% and 5% respectively. CONCLUSION Applying existing rectal volume constraints resulted in a 5-year estimated risk of developing late ⩾grade2 LRT of 11.2%. New rectal DVC for primary and postoperative IMRT planning of PC patients are proposed. A prospective evaluation is needed.


Liver International | 2015

Role of angiogenic factors/cell adhesion markers in serum of cirrhotic patients with hepatopulmonary syndrome

Sarah Raevens; Stephanie Coulon; Christophe Van Steenkiste; Roos Colman; Xavier Verhelst; Hans Van Vlierberghe; Anja Geerts; Thomas Perkmann; Thomas Horvatits; Valentin Fuhrmann; Isabelle Colle

Hepatopulmonary syndrome is a complication of chronic liver disease resulting in increased morbidity and mortality. It is caused by intrapulmonary vascular dilations and arteriovenous connections with devastating influence on gas exchange. The pathogenesis is not completely understood but evidence mounts for angiogenesis. Aims of this study were to identify angiogenic factors in serum of patients with hepatopulmonary syndrome and to study the possibility to predict its presence by these factors.


Lancet Oncology | 2018

Effect of early and systematic integration of palliative care in patients with advanced cancer: a randomised controlled trial

Gaëlle Vanbutsele; Koen Pardon; Simon Van Belle; Veerle Surmont; Martine De Laat; Roos Colman; Kim Eecloo; Veronique Cocquyt; Karen Geboes; Luc Deliens

BACKGROUND The benefit of early integration of palliative care into oncological care is suggested to be due to increased psychosocial support. In Belgium, psychosocial care is part of standard oncological care. The aim of this randomised controlled trial is to examine whether early and systematic integration of palliative care alongside standard psychosocial oncological care provides added benefit compared with usual care. METHODS In this randomised controlled trial, eligible patients were 18 years or older, and had advanced cancer due to a solid tumour, an European Cooperative Oncology Group performance status of 0-2, an estimated life expectancy of 12 months, and were within the first 12 weeks of a new primary tumour or had a diagnosis of progression. Patients were randomly assigned (1:1), by block design using a computer-generated sequence, either to early and systematic integration of palliative care into oncological care, or standard oncological care alone in a setting where all patients are offered multidisciplinary oncology care by medical specialists, psychologists, social workers, dieticians, and specialist nurses. The primary endpoint was change in global health status/quality of life scale assessed by the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 items (EORTC QLQ C30) at 12 weeks. The McGill Quality of Life Questionnaire (MQOL), which includes the additional existential wellbeing dimension, was also used. Analysis was by intention to treat. This trial is ongoing, but closed for accrual, and is registered with ClinicalTrials.gov, number NCT01865396. FINDINGS From April 29, 2013, to Feb 29, 2016, we screened 468 patients for eligibility, of whom 186 were enrolled and randomly assigned to the early and systematic palliative care group (92 patients) or the standard oncological care group (94). Compliance at 12 weeks was 71% (65 patients) in the intervention group versus 72% (68) in the control group. The overall quality of life score at 12 weeks, by the EORTC QLQ C30, was 54·39 (95% CI 49·23-59·56) in the standard oncological care group versus 61·98 (57·02-66·95) in the early and systematic palliative care group (difference 7·60 [95% CI 0·59-14·60]; p=0·03); and by the MQOL Single Item Scale, 5·94 (95% CI 5·50-6·39) in the standard oncological care group versus 7·05 (6·59-7·50) in the early and systematic palliative care group (difference 1·11 [95% CI 0·49-1·73]; p=0.0006). INTERPRETATION The findings of this study show that a model of early and systematic integration of palliative care in oncological care increases the quality of life of patients with advanced cancer. Our findings also show that early and systematic integration of palliative care is more beneficial for patients with advanced cancer than palliative care consultations offered on demand, even when psychosocial support has already been offered. Through integration of care, oncologists and specialised palliative care teams should work together to enhance the quality of life of patients with advanced cancer. FUNDING Research Foundation Flanders, Flemish Cancer Society (Kom Op Tegen Kanker).


Medicine | 2016

The single surgeon learning curve of laparoscopic liver resection: A continuous evolving process through stepwise difficulties

Federico Tomassini; Vincenzo Scuderi; Roos Colman; Marco Vivarelli; Roberto Montalti; Roberto Troisi

Abstract The aim of the study was to evaluate the single-surgeon learning curve (SSLC) in laparoscopic liver surgery over an 11-year period with risk-adjusted (RA) cumulative sum control chart analysis. Laparoscopic liver resection (LLR) is a challenging and highly demanding procedure. No specific data are available for defining the feasibility and reproducibility of the SSLC regarding a consistent and consecutive caseload volume over a specified time period. A total of 319 LLR performed by a single surgeon between June 2003 and May 2014 were retrospectively analyzed. A difficulty scale (DS) ranging from 1 to 10 was created to rate the technical difficulty of each LLR. The risk-adjusted cumulative sum control chart (RA-CUSUM) analysis evaluated conversion rate (CR), operative time (OT) and blood loss (BL). Perioperative morbidity and mortality were also analyzed. The RA-CUSUM analysis of the DS identified 3 different periods: P1 (n = 91 cases), with a mean DS of 3.8; P2 (cases 92–159), with a mean DS of 5.3; and P3 (cases 160–319), with a mean DS of 4.7. P2 presented the highest conversion and morbidity rates with a longer OT, whereas P3 showed the best results (P < 0.001). Fifty cases were needed to achieve a significant decrease in BL. The overall morbidity rate was 13.8%; no perioperative mortality was observed. According to our analysis, at least 160 cases (P3) are needed to complete the SSLC performing safely different types of LLR. A minimum of 50 cases can provide a significant decrease in BL. Based on these findings, a longer learning curve should be anticipated to broaden the indications for LLR.


Clinical Cancer Research | 2017

A Glycomics-Based Test Predicts the Development of Hepatocellular Carcinoma in Cirrhosis

Xavier Verhelst; Dieter Vanderschaeghe; Laurent Castera; Tom Raes; Anja Geerts; Claire Francoz; Roos Colman; François Durand; Nico Callewaert; Hans Van Vlierberghe

Purpose: Cirrhosis is a major risk factor for the development of hepatocellular carcinoma but remains underdiagnosed in the compensated stage. Fibrosis progression and cirrhosis are associated with changes in blood serum glycomic profiles. Previously, the serum glycomics-based GlycoCirrhoTest was shown to identify 50% to 70% of compensated cirrhosis cases in chronic liver disease cohorts, at >90% specificity. This study assessed GlycoCirrhoTest for the risk of hepatocellular carcinoma development in compensated cirrhosis. Experimental Design: Serum glycomics were analyzed in sera of 133 patients, with compensated cirrhosis collected between 1995 and 2005 in a surveillance protocol for hepatocellular carcinoma using an optimized glycomic technology on a DNA sequencer. Results: Baseline GlycoCirrhoTest values were significantly increased in patients who developed hepatocellular carcinoma after a median follow-up of 6.4 years as compared with patients who did not. For patients with a baseline GlycoCirrhoTest exceeding 0.2, the HR for hepatocellular carcinoma development over the entire study (Cox regression) was 5.1 [95% confidence interval (CI), 2.2–11.7; P < 0.001], and the HR for hepatocellular carcinoma development within 7 years was 12.1 (95% CI, 2.8–51.6; P = 0.01) based on the cut-off value optimized in the same cohort. An absolute increase in GlycoCirrhoTest of 0.2 was associated with an HR of 10.29 (95% CI, 3.37–31.43; P < 0.001) for developing hepatocellular carcinoma. In comparison, the HR for the development of hepatocellular carcinoma within 7 years for AFP levels above the optimal cutoff in this study (5.75 ng/mL) was 4.65 (95% CI, 1.59–13.61). Conclusions: This prognostic study suggests that GlycoCirrhoTest is a serum biomarker that identifies compensated cirrhotic patients at risk for developing hepatocellular carcinoma. Screening strategies could be guided by a positive test on GlycoCirrhoTest. Clin Cancer Res; 23(11); 2750–8. ©2016 AACR.


Phlebology | 2016

The influence of age and gender on venous symptomatology. An epidemiological survey in Belgium and Luxembourg

Marc E. Vuylsteke; Roos Colman; Sarah Thomis; Geneviève Guillaume; Evy Degrande; Ivan Staelens

Aim The aim of this study is to measure the incidence of the symptoms in patients with chronic venous disease (CVD) and to look for the influence of age on the severity of symptoms for both genders. Materials and methods A survey was carried out in Belgium and Luxembourg between May and September 2013. Patient recruitment was done by 406 general practitioners (GPs). Each GP screened 10–20 consecutive patients older than 18 years. Inquiries were made regarding the presence of symptoms and possible signs of CVD. Patients with diagnosed CVD filled out a questionnaire including a quality of life score (CIVIQ-14). These data were converted into a CIVIQ Global Index Score (GIS). Statistical analysis was performed in order to calculate the effect of age and gender on the number of symptoms and the estimated probabilities of having CVD. Results Totally 6009 patients were included in this survey. The mean age was 53.4 years. Of all, 61.3% of the patients have CVD (C1-C6). Of all, 64.7% of patients were symptomatic. Age and female gender were major risk factors for developing CVD. Most common symptoms were ‘heavy legs’ (70.4%), pain (54.0%), and sensation of swelling (52.7%). The number of symptoms increases with age (p < 0.001). Female patients have significantly more symptoms in comparison with male patients in all age groups. In both females and males, age is negatively correlated with GIS score (p < 0.001). The estimated probability of having CVD was significantly higher for woman compared to men and increases with age for both gender. Conclusion CVD is a very common progressive disease with age as a major risk factor. Increasing age results in a higher C-classification, more symptoms, and a lower GIS score (quality of life). Female gender interacts significantly with age and results in a more advanced stage of CVD.


Journal of Advanced Nursing | 2016

The effectiveness of an e-learning course on medication calculation in nursing students: a clustered quasi-experimental study.

Aurélie Van Lancker; Katleen Baldewijns; Rik Verhaeghe; Hugo Robays; Franky Buyle; Roos Colman; Ann Van Hecke

AIM To evaluate the effectiveness of an e-learning course compared with a face-to-face lecture on medication calculation. BACKGROUND The current knowledge on medication calculation of nursing students and nurses is insufficient to provide safe care. DESIGN A stratified-clustered quasi-experimental study. METHODS A random selection of nursing schools were allocated to the e-learning course (intervention group) (seven schools; 189 students) or face-to-face lecture (control group) (six schools, 222 students). Students in both groups completed a validated medication calculation test (maximum score: 16) prior to the course (T0), immediately after the course (T1) and 3 months later (T2). A linear mixed model was used for data analysis. RESULTS Medication calculation skills improved significantly more by the face-to-face lecture than e-learning course. Students in both groups significantly improved in medication calculation skills immediately after the course (T1) and 3 months later. The results flattened at T2 with a significant decline in the intervention group between T1 and T2 and a non-significant decline in the control group. Based on a subgroup analysis, improvement in medication calculation skills at T2 could only be observed in vocational-level (sub degree) nursing students receiving a face-to-face course. CONCLUSIONS Both medication calculation courses had a positive effect on medication calculation skills. Students receiving traditional face-to-face lecture improved significantly more than the students receiving the e-learning course.


European Eating Disorders Review | 2017

An Adjunctive Multi-family Group Intervention with or without Patient Participation during an Inpatient Treatment for Adolescents with an Eating Disorder: A Pilot Study: Multi-family Group for Eating Disorders

Lies Depestele; Laurence Claes; Eva Dierckx; Roos Colman; Katrien Schoevaerts; Gilbert Lemmens

This study reports on a pilot study of a family group intervention with or without patient participation adjunctive to a specialized inpatient treatment for eating disorders (EDs). Participants were 112 female adolescent ED inpatients and one or both of their parents. The parents were invited to participate in an adjunctive multi-family group with patient (MFT) or in a similar multi-parent group without patient participation (MPT). Questionnaires assessing ED symptoms, family functioning and caregiving experiences were administered before and after intervention. Post-intervention results obtained from both patient and parent(s) indicated that improvement in ED symptoms and parental burden occurred after both types of interventions. Family functioning improved differently according to the informant: fathers reported an improvement of general family functioning, patients reported an improvement of problem solving and mothers reported a decrease in problem solving across both formats. This study emphasized the importance of including a multi-informant approach in family interventions. Copyright

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Veerle Surmont

Ghent University Hospital

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Dirk Elewaut

Ghent University Hospital

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Philippe Carron

Ghent University Hospital

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Bihiyga Salhi

Ghent University Hospital

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Eric Derom

Ghent University Hospital

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Geert Villeirs

Ghent University Hospital

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Gert De Meerleer

Katholieke Universiteit Leuven

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