Publications by authors named "Ellen Westhoff"

Background: The European Organisation for Research and Treatment of Cancer (EORTC) quality of life questionnaire for non-muscle invasive bladder cancer (QLQ-NMIBC24) has been available and applied for some years now, but has yet to undergo a full comprehensive psychometric evaluation. The aim of this study was to investigate the psychometric properties of the Dutch version of the EORTC QLQ-NMIBC24 questionnaire in patients with low, intermediate and high risk NMIBC.

Methods: We included patients newly diagnosed with NMIBC participating in the multicenter, population-based prospective cohort studies UroLife or BlaZIB.

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Introduction: Patients with non-muscle-invasive bladder cancer (NMIBC) have a good survival but are at high risk for tumour recurrence and disease progression. It is important to identify lifestyle habits that may reduce the risk of recurrence and progression and improve health-related quality of life (HRQOL). This paper describes the rationale and design of the UroLife study.

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Background: A healthy lifestyle may reduce the risk of non-muscle-invasive bladder cancer (NMIBC) recurrence. The objective of this study was to obtain insight in whether NMIBC patients are aware of possible risk factors for (bladder) cancer, adhere to lifestyle recommendations for cancer prevention, received lifestyle advice from their physician, and what their attitudes are towards physicians giving lifestyle advice.

Methods: Patients with newly diagnosed NMIBC between 2014 and 2017 participating in the UroLife cohort study completed questionnaires at 6 weeks and 3 months after diagnosis about awareness of (bladder) cancer risk factors, adherence to lifestyle recommendations, reception of lifestyle advice, and attitudes towards physicians giving lifestyle advice.

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Background: Urologists are frequently confronted with questions of urinary bladder cancer (UBC) patients about what they can do to improve their prognosis. Unfortunately, it is largely unknown which lifestyle factors can influence prognosis.

Objective: To systematically review the available evidence on the association between body mass index (BMI), diet, dietary supplements, and physical activity and UBC prognosis.

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The association of dietary factors with urinary bladder cancer prognosis has scarcely been investigated, and results of studies conducted to date are inconsistent. We investigated whether empirically derived dietary patterns are associated with risks of recurrence and progression in non-muscle-invasive bladder cancer (NMIBC) patients. Data from 595 newly diagnosed NMIBC patients from an ongoing prospective cohort study were used to derive dietary patterns using exploratory factor analysis.

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Background: Data on urinary bladder cancer (UBC) patients' perceptions about causes of bladder cancer is limited, while this may be important knowledge for health prevention and education. We evaluated self-reported perceptions and beliefs about the causes of bladder cancer among UBC survivors in the Netherlands.

Methods: UBC survivors identified through the Netherlands Cancer Registry from 2007 to 2012 were invited to participate.

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The effectiveness of the "Extra Fit!" (EF!) education program in promoting healthy diet and physical activity to prevent and reduce overweightness among primary school children aged 9 to 11 was evaluated. A randomized controlled design was carried out in 45 primary schools (n = 1112) in the Netherlands, 23 intervention and 22 control schools. The intervention schools received the education program for two successive school years in grades (U.

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