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Dive into the research topics where Reinier Timman is active.

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Featured researches published by Reinier Timman.


Health Psychology | 1997

Three-year follow-up after presymptomatic testing for Huntington's disease in tested individuals and partners.

Aad Tibben; Reinier Timman; Erna C. Bannink; Hugo J. Duivenvoorden

The 3-year psychological effects of presymptomatic DNA diagnosis for Huntingtons disease are described in 20 identified carriers of the Huntingtons disease gene (mean age = 31 years), 29 noncarriers (mean age = 32 years), and 37 partners. The Intrusion and Avoidance subscales of the Impact of Event Scale (M. J. Horowitz, N. Wilner, & W. Alvarez, 1979) and the Beck Hopelessness Scale (A. T. Beck, 1986; A. T. Beck, A. Weissman, D. Lester, & L. Trexler, 1974) measured psychological distress at 4 time points: baseline (before disclosure of test results) and 1 week, 6 months, and 3 years after testing. Multivariate testing on course of distress revealed similar patterns of intrusive thoughts about Huntingtons disease over the 3-year follow-up in carriers and noncarriers but showed opposite patterns of avoidance at the 6-month assessment. One week after disclosure, carriers had increased and noncarriers had decreased levels of hopelessness. These effects disappeared after 6 months and did not recur. Carrier partners followed the same course of distress as carriers. Carrier partners with children were significantly more distressed than those without offspring. Noncarrier partners were significantly less distressed than noncarriers after 3 years.


BMC Health Services Research | 2013

Feasibility, reliability and validity of a questionnaire on healthcare consumption and productivity loss in patients with a psychiatric disorder (TiC-P)

C. Bouwmans; Kim de Jong; Reinier Timman; Moniek C Zijlstra-Vlasveld; Christina M. van der Feltz-Cornelis; Siok Swan Tan; Leona Hakkaart-van Roijen

BackgroundPatient self-report allows collecting comprehensive data for the purpose of performing economic evaluations. The aim of the current study was to assess the feasibility, reliability and a part of the construct validity of a commonly applied questionnaire on healthcare utilization and productivity losses in patients with a psychiatric disorder (TiC-P).MethodsData were derived alongside two clinical trials performed in the Netherlands in patients with mental health problems. The response rate, average time of filling out the questionnaire and proportions of missing values were used as indicators of feasibility of the questionnaire. Test-retest analyses were performed including Cohen’s kappa and intra class correlation coefficients to assess reliability of the data. The construct validity was assessed by comparing patient reported data on contacts with psychotherapists and reported data on long-term absence from work with data derived from registries.ResultsThe response rate was 72%. The mean time needed for filling out the first TiC-P was 9.4 minutes. The time needed for filling out the questionnaire was 2.3 minutes less for follow up measurements. Proportions of missing values were limited (< 2.4%) except for medication for which in 10% of the cases costs could not be calculated. Cohen’s kappa was satisfactory to almost perfect for most items related to healthcare consumption and satisfactory for items on absence from work and presenteeism. Comparable results were shown by the ICCs on variables measuring volumes of medical consumption and productivity losses indicating good reliability of the questionnaire.Absolute agreement between patient-reported data and data derived from medical registrations of the psychotherapists was satisfactory. Accepting a margin of +/− seven days, the agreement on reported and registered data on long-term absence from work was satisfactory. The validity of self-reported data using the TiC-P is promising.ConclusionsThe results indicate that the TiC-P is a feasible and reliable instrument for collecting data on medical consumption and productivity losses in patients with mild to moderate mental health problems. Additionally, the construct validity of questions related to contacts with psychotherapist and long-term absence from work was satisfactory.


Health Psychology | 2004

Adverse Effects of Predictive Testing for Huntington Disease Underestimated: Long-Term Effects 7-10 Years after the Test

Reinier Timman; Raymund A.C. Roos; Anneke Maat-Kievit; Arend Tibben

The 7-10-year psychological effects of presymptomatic testing for Huntington disease are described in 142 individuals and 104 partners. Questionnaires included the Beck Hopelessness Scale (A. T. Beck, A. Weissman, D. Lester, & L. Trexler, 1974), the Impact of Event Scale (M. J. Horowitz, N. Wilner. & W. Alvarez. 1979). and the General Health Questionnaire (D. P. Goldberg. 1972). Carriers and their partners were more distressed immediately after the test result, although their outlooks improved somewhat in the 2-3-year posttest period. However, they became more pessimistic thereafter, when approaching the age of onset. Carriers, who were lost to follow-up after disclosure of test results, reported more distress pretest than did retained carriers. This demonstrates that studies that report few harmful effects may have underestimated the real impact. Moreover, follow-up studies need to investigate time effects for longer than a few years.


Patient Education and Counseling | 2010

Enhancement of care through self-monitoring and tailored feedback via text messaging and their use in the treatment of childhood overweight

Stephanie Bauer; Judith de Niet; Reinier Timman; Hans Kordy

OBJECTIVE This paper first illustrates the general potential of the short message service (SMS) for symptom and behavior monitoring and the provision of tailored feedback. Second, an SMS-based maintenance treatment (SMSMT) is introduced aimed at enhancing the treatment of childhood overweight. METHODS After a 12-week cognitive behavioral group treatment (CBGT), 40 children were assigned to the SMSMT for a period of 36 weeks. Children were asked to send weekly self-monitoring data on eating behavior, exercise behavior, and emotions and received tailored feedback. The adherence to SMSMT and changes in Body Mass Index Standard Deviation Scores (BMI-SDS) during the first and second treatment phase were analysed. RESULTS Children (mean age=10.05, SD=1.28) submitted 67% of the weekly SMS that they were expected to send in. During CBGT a significant reduction by 0.20 BMI-SDS was observed. The reduction by 0.07 BMI-SDS during the SMSMT did not reach statistical significance. CONCLUSION The results support the feasibility of SMSMT in the treatment of childhood overweight. The efficacy of the intervention needs to be demonstrated in an RCT. PRACTICE IMPLICATIONS SMSMT is a promising intervention that may extend the reach of treatment centers for childhood overweight at reasonable cost and effort.


Pediatric Obesity | 2012

The effect of a short message service maintenance treatment on body mass index and psychological well‐being in overweight and obese children: a randomized controlled trial

Judith de Niet; Reinier Timman; Stephanie Bauer; Erica L.T. van den Akker; Hanneke Buijks; Cora de Klerk; Hans Kordy; Jan Passchier

Maintaining weight loss results in childhood obesity treatment is difficult to achieve. Self‐management techniques such as self‐monitoring are associated with increased weight loss and maintenance. This study analyzes whether self‐monitoring of lifestyle behaviours through a short message service maintenance treatment (SMSMT) via mobile phones with personalized feedback positively effects weight, lifestyle behaviours and psychological well‐being in obese children.


Pediatrics | 2011

Predictors of Participant Dropout at Various Stages of a Pediatric Lifestyle Program

Judith de Niet; Reinier Timman; Mieke Jongejan; Jan Passchier; Erica L.T. van den Akker

OBJECTIVE: To evaluate baseline predictors of drop out at various stages in a lifestyle intervention for overweight and obese children. PATIENTS AND METHODS: Children and their families (N = 248) (aged 8–14 years) attended a lifestyle intervention. At baseline, we assessed anthropometric and demographic data, measured competence and behavioral problems, and family functioning. Dropout rates were analyzed at various stages in treatment with logistic regression analyses. RESULTS: Children who had mothers of non-white descent, who had higher BMI SDS, who participated in fewer activities, who did not have breakfast regularly, and who did not live in families with a static adaptability structure were more likely to drop out between 0 and 12 months. Different characteristics predicted dropout at various stages of treatment: (1) having an ethnic minority status and being older predicted dropping out between 0 and 3 months; (2) having a nonwhite mother, participating in fewer activities, having higher delinquency scores, and not presenting the family as extremely positive predicted dropping out between 3 and 9 months; and (3) having a higher BMI SDS, having fewer social problems, and not living in families with a static adaptability structure predicted dropping out between 9 and 12 months of treatment. CONCLUSIONS: The results indicate diffrerent characteristics predict dropping out from a pediatric lifestyle program at various stages in treatment. These findings highlight the need for tailored interventions that target different characteristics at various stages of treatment to reduce drop out rates.


European Journal of Cancer | 2012

Body image and psychological distress after prophylactic mastectomy and breast reconstruction in genetically predisposed women: A prospective long-term follow-up study

Mariska den Heijer; Caroline Seynaeve; Reinier Timman; Hugo J. Duivenvoorden; Kathleen Vanheusden; Madeleine M.A. Tilanus-Linthorst; Marian Be Menke-Pluijmers; Aad Tibben

PURPOSE To explore the course of psychological distress and body image at long-term follow-up (6-9 years) after prophylactic mastectomy and breast reconstruction (PM/BR) in women at risk for hereditary breast cancer, and to identify pre-PM risk factors for poor body image on the long-term. METHODS Psychological distress (general and breast cancer specific) and body image (general and breast specific) were assessed in 36 high-risk women before PM (T0), at 6 months (T1) and 6-9 years (T2) after PM/BR. Investigated predictive variables (assessed at T0) for long-term body image (assessed at T2) included psychological distress, body image and coping styles. RESULTS Breast cancer specific and general distress significantly decreased from T0 to T1 as well as from T1 to T2. Problems regarding breast related and general body image were significantly higher at T1 than at T0. Subsequently, breast related body image scores significantly decreased from T1 to T2, while the decrease in general body image scores were not significant. Active coping and seeking social support were predictive of lower scores (i.e. less problems) on breast related and general body image at long-term follow-up. Furthermore, higher scores on general body image before PM/BR were predictive for increased general body image scores at long-term follow-up. CONCLUSION Our findings indicate that psychological distress is decreased after PM/BR, at the cost of persistent problems regarding body image. Exploration of coping styles and body image perception before PM/BR may help to identify vulnerable women who may benefit from additional support.


Health Psychology | 2012

Short message service reduces dropout in childhood obesity treatment: a randomized controlled trial

Judith de Niet; Reinier Timman; Stephanie Bauer; Erica L.T. van den Akker; Cora de Klerk; Hans Kordy; Jan Passchier

OBJECTIVE Lifestyle programs can reduce the level of overweight in children; however, maintenance results and adherence to treatment are difficult to achieve. New technologies, such as the Short Message Service (SMS), might be a promising tool for enhancing interventions. The effect of an SMS approach aimed at improving treatment results and reducing dropout rates in a pediatric lifestyle intervention, is explored. METHOD Overweight and obese children (N = 141; age 7-12 years) participating in a lifestyle program were randomly assigned to an intervention group receiving an SMS Maintenance Treatment (SMSMT) for 38 weeks (n = 73) or to a control group receiving no SMSMT (n = 68). Children were asked to send weekly self-monitoring data on exercise, eating behavior, and emotional well-being. In return, they received tailored feedback messages. A differential decrease in BMI was analyzed with repeated measures ANOVA and dropout with logistic regression analysis. RESULTS We found no significant difference in BMI decrease between the two groups after 12 months; however, we showed that the SMSMT group had 3.25 times less probability of dropping out after 1 year (p = .01) than controls. In the first 3 months of SMSMT, the SMSMT completers sent 0.80 SMSs per week, which reduced to 0.50 SMSs in the final 3 months. Younger children sent more SMSs (p = .03). CONCLUSIONS These results indicate that SMSMT is effective in reducing dropout rates from a pediatric lifestyle intervention. Future research should examine the effectiveness of SMSMT on weight management and related psychosocial variables.


The Lancet | 2017

Prevention of incisional hernia with prophylactic onlay and sublay mesh reinforcement versus primary suture only in midline laparotomies (PRIMA): 2-year follow-up of a multicentre, double-blind, randomised controlled trial

An P Jairam; Lucas Timmermans; Hasan H. Eker; Robert E. G. J. M. Pierik; David van Klaveren; Ewout W. Steyerberg; Reinier Timman; Arie C. van der Ham; Imro Dawson; Jan Charbon; Christoph Schuhmacher; André L. Mihaljevic; Jakob R. Izbicki; Panagiotis Fikatas; Philip Knebel; René H. Fortelny; Gert-Jan Kleinrensink; Johan F. Lange; Hans Jeekel; Jeroen Nieuwenhuizen; Wim C. J. Hop; Pim C W Burger; Hence J.M. Verhagen; Pieter J. Klitsie; Michiel van de Berg; Markus Golling

BACKGROUND Incisional hernia is a frequent long-term complication after abdominal surgery, with a prevalence greater than 30% in high-risk groups. The aim of the PRIMA trial was to evaluate the effectiveness of mesh reinforcement in high-risk patients, to prevent incisional hernia. METHODS We did a multicentre, double-blind, randomised controlled trial at 11 hospitals in Austria, Germany, and the Netherlands. We included patients aged 18 years or older who were undergoing elective midline laparotomy and had either an abdominal aortic aneurysm or a body-mass index (BMI) of 27 kg/m2 or higher. We randomly assigned participants using a computer-generated randomisation sequence to one of three treatment groups: primary suture; onlay mesh reinforcement; or sublay mesh reinforcement. The primary endpoint was incidence of incisional hernia during 2 years of follow-up, analysed by intention to treat. Adjusted odds ratios (ORs) were estimated by logistic regression. This trial is registered at ClinicalTrials.gov, number NCT00761475. FINDINGS Between March, 2009, and December, 2012, 498 patients were enrolled to the study, of whom 18 were excluded before randomisation. Therefore, we included 480 patients in the primary analysis: 107 were assigned primary suture only, 188 were allocated onlay mesh reinforcement, and 185 were assigned sublay mesh reinforcement. 92 patients were identified with an incisional hernia, 33 (30%) who were allocated primary suture only, 25 (13%) who were assigned onlay mesh reinforcement, and 34 (18%) who were assigned sublay mesh reinforcement (onlay mesh reinforcement vs primary suture, OR 0·37, 95% CI 0·20-0·69; p=0·0016; sublay mesh reinforcement vs primary suture, 0·55, 0·30-1·00; p=0·05). Seromas were more frequent in patients allocated onlay mesh reinforcement (34 of 188) than in those assigned primary suture (five of 107; p=0·002) or sublay mesh reinforcement (13 of 185; p=0·002). The incidence of wound infection did not differ between treatment groups (14 of 107 primary suture; 25 of 188 onlay mesh reinforcement; and 19 of 185 sublay mesh reinforcement). INTERPRETATION A significant reduction in incidence of incisional hernia was achieved with onlay mesh reinforcement compared with sublay mesh reinforcement and primary suture only. Onlay mesh reinforcement has the potential to become the standard treatment for high-risk patients undergoing midline laparotomy. FUNDING Baxter; B Braun Surgical SA.


Plastic and Reconstructive Surgery | 2010

Surgical results, aesthetic outcome, and patient satisfaction after microsurgical autologous breast reconstruction following failed implant reconstruction.

Noortje J. Visser; Tim H. C. Damen; Reinier Timman; Stefan O.P. Hofer; Marc A.M. Mureau

Background: The majority of breast reconstructions are performed using implant material. Implants have some major long-term disadvantages. Long-term implant-related complications and improved microsurgical techniques have led to an increased number of women requesting conversion of their implant breast reconstruction to autologous breast reconstruction. The aim of this study was to evaluate surgical and aesthetic outcome and patient satisfaction after tertiary autologous breast reconstruction. Methods: Between 2001 and 2007, 42 women underwent 61 tertiary autologous breast reconstructions. Surgical outcome and complications were evaluated. Patient satisfaction was assessed using a study-specific questionnaire. Aesthetic result was rated by an expert panel using standardized photographs. Results: Forty-seven deep inferior epigastric artery perforator, 10 mini–transverse rectus abdominis musculocutaneous, and four transverse musculocutaneous gracilis flaps were performed. Eight patients required reoperation because of complications (19 percent). Total flap loss did not occur. Nineteen patients underwent one or more additional operations to improve aesthetic outcome. Physical discomfort caused by implants and dissatisfaction with the aesthetic result were the main patient motivations to opt for autologous breast reconstruction. Reduction or disappearance of physical discomfort was noted in the vast majority of patients. Most patients were very satisfied with the aesthetic result (mean, 8 of 10), but the mean panel satisfaction score was lower (7 of 10). However, the panel noted a significant improvement of the aesthetic result after conversion to autologous breast reconstruction (from 5 of 10 to 7 of 10). Conclusion: Autologous breast reconstruction after failed implant reconstruction is a technically feasible and reliable procedure that leads to improved physical condition and aesthetic results and a high degree of patient satisfaction.

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Jan J. V. Busschbach

Erasmus University Rotterdam

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Jan van Busschbach

Erasmus University Rotterdam

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Emma K. Massey

Erasmus University Rotterdam

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Marc A.M. Mureau

Erasmus University Rotterdam

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Roel Verheul

University of Amsterdam

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W. Zuidema

Erasmus University Rotterdam

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Jan N. M. IJzermans

Erasmus University Rotterdam

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Lotte Timmerman

Erasmus University Rotterdam

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