Paul Lodder

Paul Lodder
Tilburg University | UVT · Department of Methodology and Statistics

MSc

About

79
Publications
13,341
Reads
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722
Citations
Introduction
Assistant Professor at Tilburg University, studying the application of psychometrics and statistical modeling in medical and clinical psychology. Statistical editor at the Journal of Psychosomatic research. Methodological and statistical consultant. Please see my website www.paultwin.com for a complete list of my peer reviewed publications.
Additional affiliations
April 2017 - present
Tilburg University
Position
  • Lecturer
January 2016 - January 2020
Tilburg University
Position
  • PhD Student
January 2016 - present
Tilburg University
Position
  • Instructor
Education
September 2012 - August 2014
University of Amsterdam
Field of study
  • Research Master's Psychology
September 2009 - August 2012
University of Amsterdam
Field of study
  • Psychology
September 2007 - August 2010
Erasmus University Rotterdam
Field of study
  • Human Resource Management

Publications

Publications (79)
Article
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Background: The course and different characteristics of acute and posttraumatic stress disorder (ASD, PTSD) in trauma populations are unclear. Objective: The aims were to identify longitudinal trajectories of PTSD, to establish a risk profile for ASD and PTSD based on patients' sociodemographic, clinical, and psychological characteristics, and t...
Article
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Objective To assess the association between trajectories of comorbid anxiety and depressive (CAD) symptoms assessed in each pregnancy trimester and physiological birth. Design Large longitudinal prospective cohort study with recruitment between January 2013 and September 2014. Setting Primary care, in the Netherlands. Population Dutch‐speaking p...
Article
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The relation between religiosity and well-being is one of the most researched topics in the psychology of religion, yet the directionality and robustness of the effect remains debated. Here, we adopted a many-analysts approach to assess the robustness of this relation based on a new cross-cultural dataset (N = 10, 535 participants from 24 countries...
Article
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Researchers commonly study interaction effects between constructs measured with items on an ordinal measurement level and skewed score distributions. Here, I show that ignoring skewness in item scores often produces biased regression estimates, especially for interaction effects. I simulated 800 datasets with scores on two independent (X and Z) and...
Article
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Background: The COVID-19 pandemic has drastically impacted many aspects of society and has indirectly produced various psychological consequences. This systematic review aimed to estimate the worldwide prevalence of posttraumatic stress disorder (PTSD) in children due to the COVID-19 pandemic, as well as to identify protective or risk factors cont...
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Purpose Osteoporotic vertebral compression fractures are treated conservatively or in selected cases with percutaneous vertebroplasty (PV). The purpose of this retrospective analysis is to determine predictive factors for a high visual analogue scale (VAS) pain score after conservative, sham or PV and is based on previously published randomized tri...
Article
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Vaccines are an important tool for governments and health agencies to contain and curb the Coronavirus Disease-19 (COVID-19) pandemic. However, despite their effectiveness and safeness, a substantial portion of the population worldwide is hesitant to get vaccinated. In the current study, we examined whether fear of COVID-19 predicts vaccination wil...
Article
Background The risk factors of Posttraumatic Stress Symptoms (PTSS) and depressive symptoms have been well-established, but whether the network structure of their symptoms changes over time remains unclear. This study aims to examine the six-year changes of network structure of PTSS and depressive symptoms among Wenchuan earthquake adult survivors...
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Background and Objectives Prevalent Post-traumatic Stress Disorder (PTSD) negatively affected individuals during the COVID-19 pandemic. Using network analyses, this study explored the construct of PTSD symptoms during the COVID-19 pandemic in China to identify similarities and differences in PTSD symptom network connectivity between the general Chi...
Preprint
Full-text available
Vaccines are an important tool for governments and health agencies to contain and curb the Coronavirus Disease-19 (COVID-19) pandemic. However, despite their effectiveness and safeness, a substantial portion of the population worldwide is hesitant to get vaccinated. In the current study, we examined whether fear of COVID-19 predicts vaccination wil...
Article
Bipolar disorder is typified by episodes of manic/hypomanic and depressive symptoms, either distinctly or concurrently as mixed symptoms. While depressive symptoms are the major driver of risk, it is unclear whether specific combinations of manic and anxiety symptoms contribute differentially to suicidal ideation and behavior in individuals with bi...
Article
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Background: The COVID-19 pandemic drastically impacted on family life and may have caused parental distress, which in turn may result in an overreliance on less effective parenting practices. Objective: The aim of the current study was to identify risk and protective factors associated with impaired parenting during the COVID-19 lockdown. Key facto...
Article
Introduction Patient reported outcome measures (PROMs) such as health status (HS) and quality of life (QOL) are frequently used interchangeably while they represent different outcomes. Whether a discrepancy exists in patients with intermittent claudication (IC) in changes over time between HS and QOL is unclear. This study aimed to investigate the...
Article
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Since the outbreak of the coronavirus disease (COVID-19), several reports have shown that fear relating to COVID-19 has sharply increased. To measure fear of COVID-19, various questionnaires have been developed in parallel. However, fear concerning COVID-19 is not necessarily a uniform construct and the different questionnaires may cover diverse as...
Article
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Background The course and corresponding characteristics of quality of life (QOL) domains in trauma population are unclear. Our aim was to identify longitudinal QOL trajectories and determine and predict the sociodemographic, clinical, and psychological characteristics of trajectory membership in physical trauma patients using a biopsychosocial appr...
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Introduction Type D personality, operationalized as high scores on negative affectivity (NA) and social inhibition (SI), has been associated with various medical and psychosocial outcomes. The recent failure to replicate earlier findings could result from the various methods used to assess the Type D effect. Despite recommendations to analyze the c...
Article
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Objective Factor structure results of Fear of Cancer Recurrence Inventory (FCRI) translations are inconclusive. Through investigating the factor structure, this study aimed to improve the FCRI and its usability. Therefore, we did a comprehensive comparison of the factor structure results of all translations, by exploring and improving the structure...
Article
Longitudinal studies including parental distress when examining adverse health outcomes in adolescents with type 1 diabetes are lacking. This study examined whether parental depression and anxiety predict adolescent emotional distress and glycated hemoglobin A1c (HbA1c) 1 year later and whether a relation between parental distress and HbA1c is medi...
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We examined internet searches indicative of abusive parental behaviors before and after the World Health Organization’s declaration of COVID-19 as a pandemic (March 11, 2020) and subsequent lockdown measures in many countries worldwide. Using Google Trends, we inferred search trends between December 28, 2018, and December 27, 2020, for queries cons...
Preprint
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UNSTRUCTURED We examined internet searches indicative of abusive parental behaviors before and after the World Health Organization’s declaration of COVID-19 as a pandemic (March 11, 2020) and subsequent lockdown measures in many countries worldwide. Using Google Trends, we inferred search trends between December 28, 2018, and December 27, 2020, for...
Article
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Background The coronavirus disease 2019 (COVID-19) pandemic had brought negative consequences and new stressors to mothers. The current study aims to compare factors predicting maternal mental health during the COVID-19 lockdown in China, Italy, and the Netherlands. Methods The sample consisted of 900 Dutch, 641 Italian, and 922 Chinese mothers (a...
Preprint
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Fear is an evolutionary adaptive emotion that serves to protect the organism from harm. Once a threat diminishes, fear should also dissipate as otherwise fear may become chronic and pathological. While threat (i.e., number of infections, hospitalizations and deaths) during the ongoing COVID-19 pandemic has substantially varied over time, it remains...
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In this newly published study me and my colleagues focused on three popular methods to model interactions between two constructs containing measurement error in predicting an observed binary outcome: logistic regression using (1) observed scores, (2) factor scores, and (3) Structural Equation Modeling (SEM). It is still unclear how they compare wit...
Article
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Objective Type D personality has been associated with various medical and psychosocial outcomes. Type D's underlying personality traits negative affectivity (NA) and social inhibition (SI) are hypothesized to either additively (NA + SI) or synergistically (NA ∗ SI) affect an outcome. As some of the methods used to assess a Type D effect have been c...
Article
Because the future belongs to all of us, not just to experts or professionals, knowing what people think about the future is not only interesting, but also relevant to the functioning of modern democracies. This study about what Dutch people think about the future and about technology shows, among other things, that they are generally positive abou...
Article
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Purpose: In elderly patients with chronic limb-threatening ischemia (CLTI), there is little scientific understanding of the long-term changes of quality of life (QoL) and health status (HS) after treatment. The primary goal of this study was to provide long-term QoL and HS results for elderly CLTI patients after therapy. Treatments consisted of en...
Preprint
Full-text available
Since the outbreak of the coronavirus disease (COVID-19), several reports have shown that fear relating to COVID-19 has sharply increased. To measure fear of COVID-19, various questionnaires have been developed in parallel. However, fear concerning COVID-19 is not necessarily a uniform construct and the different questionnaires may cover diverse as...
Article
Full-text available
Purpose: Previous research reported conflicting findings regarding the association of sociodemographic and clinical variables with expectations for surgical outcomes. The current study aimed to identify and characterize different subgroups of osteoarthritis patients with respect to amount and level of expectations, and to examine factors that are...
Article
Introduction Intermittent claudication (IC) and chronic limb-threatening ischemia (CLTI) are both associated with a decreased health status (HS), and possibly quality of life (QOL). A better understanding of the differences in QOL between patients with IC and CLTI could be of additional value in shared decision making. The aim of this study was to...
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Background: Health-care systems nowadays rely on complementary patient care by informal caregivers. The need for, and burden on, informal caregivers will likely increase in the upcoming years. This study aimed to examine the burden on caregivers when providing care for elderly patients undergoing major abdominal surgery. Methods: A single-centre...
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Background: Identification of patient-related factors associated with Health-Related Quality of Life (HRQoL) and Quality of Life (QoL) at the start of treatment may identify patients who are prone to a decrease in HRQoL and/or QoL resulting from chemotherapy. Identification of these factors may offer opportunities to enhance patient care during tr...
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Objective In research on Type D personality, its subcomponents negative affectivity (NA) and social inhibition (SI) are hypothesized to have a synergistic effect on various medical and psychosocial outcomes. As some methods to analyze Type D personality have been criticized, this study investigated whether these methods adequately detect a Type D e...
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Objective: Unhealthy lifestyle factors have adverse outcomes in cardiac patients. However, only a minority of patients succeed to change unhealthy habits. Personalization of interventions may result in critical improvements. The current randomized controlled trial provides a proof of concept of the personalized Do CHANGE 2 intervention and evaluat...
Article
Objectives: This study aimed to demonstrate the impact of elective major abdominal surgery and subsequent postoperative delirium on quality of life (QOL; primary outcome), cognitive functioning and depressive symptoms (secondary outcomes) in older surgical patients. Method: A single-centre, longitudinal prospective cohort study was conducted betwee...
Article
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Background: Psychological factors are associated with adverse prognosis in patients with ischemic heart disease (IHD). However, it is unknown whether these risk factors differ between women and men. Methods: PubMed, EMBASE, and PsycINFO were searched to identify studies assessing the risk of psychological factors for major adverse cardiovascular...
Article
Introduction Revascularization is the cornerstone of the treatment of critical limb ischemia (CLI), but the number of elderly frail patients increase. Revascularization is not always possible in these patients and conservative therapy seems to be an option. The goals of this study are to analyze the 1-year quality of life (QoL) results and mortalit...
Article
Background When nonoperative treatment for chronic plantar fasciitis fails, often a corticosteroid injection is given. Corticosteroid injection gives temporary pain reduction but no healing. Platelet-rich plasma (PRP) has proven to be a safe therapeutic option in the treatment of tendon, muscle, bone, and cartilage injuries. Purpose To determine t...
Article
Objective: Fear of cancer recurrence (FCR) is a common consequence of surviving cancer, therefore an easily accessible self-help training could help many cancer survivors to deal with FCR at low costs. The CAncer REcurrence Self-help Training [CAREST] trial evaluates the effectiveness of an online tailored self-help training, based on evidence-bas...
Article
Background: Revascularization is the cornerstone in the treatment of patients with critical limb-threatening ischemia (CLTI). However, the 2-year mortality rate is up to 50% in these patients. Therefore, the clinical benefit of revascularization needs to be considered carefully. The question emerges if there are changes in quality of life (QoL) an...
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Purpose In lung cancer, the preservation of well-being is warranted given the limited prognosis. Chemotherapy may negatively influence health-related quality of life (HRQoL) due to adverse events. However, patients’ judgement about this negative impact is not well understood. We examined the relationship between expectations, feelings about side ef...
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Background: Consequences of sarcoidosis are wide ranging, and the symptom burden has a great impact on patients' quality of life (QoL). However, the QoL of couples living with sarcoidosis has not yet been studied. Objectives: Our aim was to assess the QoL of couples living with sarcoidosis and to evaluate whether living with a partner with sarco...
Article
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For women with obsessive-compulsive personality disorder (OCPD) trait symptoms, coping with childbearing and parenting could be associated with postpartum depressive symptoms. Therefore, the possible relationship between OCPD trait symptoms and trajectories of postpartum depressive symptoms was examined. A cohort of 1427 women was followed from lat...
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Purpose: Despite high amputation rates, data on patient-reported outcomes is scarce in the elderly population with critical limb ischemia. The aim of this study was to provide mortality rates and long-term changes of the following patient-reported outcomes in elderly critical limb ischemia amputees: quality of life (QoL), health status (HS), and s...
Article
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Introduction: Critical limb ischemia (CLI) patients are often of advanced age with reduced health status (HS) and quality of life (QoL) at baseline. Physical health is considered as the most affected domain due to reduced mobility and ischemic pain. QoL and HS are often used interchangeably in the current literature. HS refers to objectively perce...
Article
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Sex- and Gender-Stratified Risks of Psychological Factors for Incident Ischemic Heart Disease: Systematic Review and Meta-Analysis
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Sex- and Gender-Stratified Risks of Psychological Factors for Incident Ischemic Heart Disease: Systematic Review and Meta-Analysis
Article
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Background-—Psychological factors are associated with an increased risk of developing ischemic heart disease (IHD). Women more often report psychological factors, and sex and gender differences are present in IHD. In this meta-analysis we examine the risks of psychological factors for IHD incidence in women and men. We hypothesize that a broad rang...
Data
Table S1. Search Terms Table S2. Covariate Adjustment: Main Categories and Covariates Table S3. Characteristics of Studies Included in Unadjusted, Sensitivity, and Additional Analyses Table S4. Unadjusted Hazard Ratios and Relative Risk of Sex‐ and Gender‐Stratified Analyses of Psychological Factors for Incident Ischemic Heart Disease Table S5....
Article
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Background: Little is known about the effect of a splenic rupture on the quality of life (QOL) of patients, although the spleen is one of the most frequently injured organs in blunt abdominal trauma. It is essential to obtain more knowledge about QOL after traumatic spleen injury so that this can be taken into account when choosing treatment. Obj...
Article
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Several approaches exist to model interactions between latent variables. However, it is unclear how these perform when item scores are skewed and ordinal. Research on Type D personality serves as a good case study for that matter. In Study 1, we fitted a multivariate interaction model to predict depression and anxiety with Type D personality, opera...
Article
Background Percutaneous vertebroplasty (PV) is an alternative option to treat pain after an osteoporotic vertebral compression fracture (OVCF). Controversy exists as to whether PV increases the risk of new OVCFs or prevents further vertebral height loss in treated levels. We assessed both during 1-year follow-up in patients with acute OVCF randomis...
Article
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Research on money priming typically investigates whether exposure to money-related stimuli can affect people's thoughts, feelings, motivations, and behaviors (for a review, see Vohs, 2015). Our study answers the call for a comprehensive meta-analysis examining the available evidence on money priming (Vadillo, Hardwicke, & Shanks, 2016). By conducti...
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Background Knowledge of the level of healthcare utilization (HCU) and the predictors of high HCU use in patients with an implantable cardioverter defibrillator (ICD) is lacking. We examined the level of HCU and predictors associated with increased HCU in first‐time ICD patients, using a prospective study design. Methods ICD patients (N = 201) comp...
Article
Background In patients with critical limb ischemia, an association is assumed between depression and worse outcome for morbidity, such as major limb amputation. After major amputation, anxiety and depression are common. We aimed to determine the association of depressive and anxiety symptoms in the elderly with critical limb ischemia, especially af...
Article
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Objectives A patient-oriented appraisal of treatment has become extremely important, particularly in elderly patients with critical limb ischaemia (CLI). Quality of life (QoL) is an important patient-reported outcome in vascular surgery. Frequently, the physical domain of QoL questionnaires represents an ‘objective’ evaluation of performing activit...
Article
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Background To determine the psychometric properties and minimal clinically important differences (MCIDs) of the World Health Organization Quality of Life-BREF (WHOQOL-BREF) in advanced stage lung cancer patients. Methods Patients (n = 153) completed the WHOQOL-BREF and the European Organisation for Research and Treatment of Cancer Quality of Life...