In the last decade, through Clinical Outcome Assessment, and especially measurement of patient-reported outcome measures (PROM)s, we, among others, have initiated a shift in focus from meningioma... Show moreIn the last decade, through Clinical Outcome Assessment, and especially measurement of patient-reported outcome measures (PROM)s, we, among others, have initiated a shift in focus from meningioma tumors to meningioma patients. In various studies we describe an improvement in surgical approaches for skull base meningioma. Nevertheless, patient functioning remains impaired in the long-term. We describe that on average nine years after treatment or diagnosis patients still suffer from participation restrictions in social situations with their friends, family, and at work. Often, at the outpatient clinic, we do not pay enough attention to these problems, especially as patient visits become less frequent in the long-term. Importantly, functioning of patients and their informal caregivers (i.e., close relatives/friends) is strongly interdependent. Moreover, patients and healthcare providers find different outcomes and care processes relevant. This underlines the importance of implementation of PROMs in clinical practice. The studies in this thesis suggest that meningioma care trajectories could benefit from the use of 1) case managers guiding patients and their informal caregivers, 2) implementation of PROMs, and 3) prediction models assisting in the identification of individual patients at high risk of long-term lowered functioning. Ideally, these trajectories should follow the value-based healthcare (VBHC) principles. Show less
Prognostic assessment in traumatic brain injury (TBI) is embedded deeply in clinical care. Considering the limitations of current prognostic indicators, there is increasing interest in... Show morePrognostic assessment in traumatic brain injury (TBI) is embedded deeply in clinical care. Considering the limitations of current prognostic indicators, there is increasing interest in understanding the role of new biomarkers, and in finding other prognostic indicators of long-term outcomes following TBI. New prognostic indicators may result in the development of more accurate prediction models that could be useful for both risk stratification and clinical decision making. We aimed to review methodological issues and provide tentative guidelines for prognostic research in TBI. Prognostic factor research focuses on the role of a specific patient or disease-related characteristic in relation to outcome. Typically, univariable relations of the prognostic factor are studied, followed by analyses adjusting for other variables related to the outcome. Following existing guidelines, we emphasize the importance of transparent reporting of patient and specimen characteristics, study design, clinical end-points, and statistical analysis. Prognostic model research considers combinations of predictors, with challenges for model specification, estimation, evaluation, validation, and presentation. We highlight modern approaches and opportunities related to missing values, exploration of non-linear effects, and assessing between-study heterogeneity. Prognostic research in TBI can be improved if key methodological principles are adhered to and when research is performed in collaboration among multiple centers to ensure generalizability. Show less