Mathilde G. E. Verdam
Leiden University
Quality of lifeStatisticsPsychologyStructural equation modelingMedicine
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Publications 46
Objective: Unmet health care needs require additional care resources to achieve optimal patient well-being. In this nationwide study we examined associations between a number of risk factors and unmet needs after treatment among women with breast cancer, while taking into account their health care practices. We expected that more care use would be associated with lower levels of unmet needs. Methods: A multicenter, prospective, observational design was employed. Women with primary breast cancer ...
1 CitationsSource
#1Nadine Bol (Tilburg University)H-Index: 11
#2Annemiek J. Linn (UvA: University of Amsterdam)H-Index: 9
Last. Julia C.M. van Weert (UvA: University of Amsterdam)H-Index: 27
view all 5 authors...
Abstract Introduction Understanding how information needs of older patients with cancer vary is essential for patient-centered communication. Little research has considered the potential complex patterns in information needs among older patients with cancer. This study aims to identify profiles of older patients with cancer based on differences in their information needs. Materials and Methods Two-hundred and twenty-three patients with cancer and survivors aged 70 years or older completed an onl...
1 CitationsSource
#1Floor Bennebroek Evertsz (UvA: University of Amsterdam)H-Index: 7
#2Mirjam A. G. Sprangers (UvA: University of Amsterdam)H-Index: 63
Last. Claudi L. H. Bockting (UvA: University of Amsterdam)H-Index: 30
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Background:According to cognitive behavioural theory, cognitive factors (i.e. underlying general dysfunctional beliefs and (situation) specific illness beliefs) are theorized to lead to outcomes like anxiety and depression. In clinical practice, general dysfunctional beliefs are generally not tackled directly in short-term-therapy.Aims:The goal of the present study was to investigate the associations of general versus specific illness beliefs on anxiety and depressive symptoms and psychiatric di...
#1Sascha Y. Struijs (LEI: Leiden University)H-Index: 3
#1Sascha Y. Struijs (LEI: Leiden University)
Last. Brenda W.J.H. Penninx (VU: VU University Amsterdam)H-Index: 134
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Abstract Background Signs and symptoms of psychopathology can be chronic but are generally regarded as less stable over time than markers of cognitive vulnerability and personality. Some findings suggest that these differences in temporal stability are modest in size but a rigorous examination across concepts is lacking. The current study investigated the temporal stability of affective symptoms, cognitive vulnerability markers and personality traits at various assessments over nine years. Metho...
#1Bo Jan Noordman (EUR: Erasmus University Rotterdam)H-Index: 7
Last. J. J. B. van Lanschot (EUR: Erasmus University Rotterdam)H-Index: 56
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Background The course of health-related quality of life (HRQOL) during and after completion of neoadjuvant chemoradiotherapy (nCRT) for esophageal or junctional carcinoma is unknown.
#1Mathilde G. E. Verdam (LEI: Leiden University)H-Index: 11
#2Frans J. Oort (UvA: University of Amsterdam)H-Index: 50
1 CitationsSource
#1Sandra Nolte (Charité)H-Index: 29
#2Cheryl CoonH-Index: 1
Last. Mathilde G. E. Verdam (LEI: Leiden University)H-Index: 11
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Background Psychometric theory offers a range of tests that can be used as supportive evidence of both validity and reliability of instruments aimed at measuring patient-reported outcomes (PRO). The aim of this paper is to illustrate psychometric tests within the Classical Test Theory (CTT) framework, comprising indices that are frequently applied to assess item- and scale-level psychometric properties of PRO instruments.
2 CitationsSource
Structural equation modeling is a common technique to assess change in longitudinal designs. However, these models can become of unmanageable size with many measurement occasions. One solution is the imposition of Kronecker product restrictions to model the multivariate longitudinal structure of the data. The resulting longitudinal three-mode models (L3MMs) are very parsimonious and have attractive interpretation. This paper provides an instructive description of L3MMs. The models are applied to...
#1Danielle Blanch-Hartigan (Bentley University)H-Index: 16
#2Marceline van Eeden (UvA: University of Amsterdam)
Last. Marij A. Hillen (UvA: University of Amsterdam)H-Index: 11
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Abstract Objective: Physicians are increasingly expected to share uncertain information, yet there is concern about possible negative effects on patients. How uncertainty is conveyed and by whom may influence patients’ response. We tested the effects of verbally and non-verbally communicating uncertainty by a male vs. female oncologist on patients’ trust and intention to seek a second opinion. Methods: In an experimental video vignettes study conducted in The Netherlands, oncologist communicatio...
#1Kim Brandes (UvA: University of Amsterdam)H-Index: 6
#2Annemiek J. Linn (UvA: University of Amsterdam)H-Index: 9
Last. Edith G. Smit (UvA: University of Amsterdam)H-Index: 24
view all 5 authors...
Abstract Objective To examine whether the use of persuasive messages in which cancer patients’ attitudes and perceived social norms were either simultaneously or exclusively targeted can positively change patients’ attitudes, perceived social norms and the intention to express concerns in consultations. Methods Two online experiment s were conducted. The first experiment had a pre-test and post-test measurements design with 4 conditions (attitudes message, social norms message, combined message,...