Wereldwijd worden mensen steeds ouder en het aandeel ouderen binnen de bevolking neemt toe. Dit leidt ook tot een toename van het aantal ouderen dat kwetsbaar is. Ondanks dat de term kwetsbaarheid, in het Engels ‘frailty’ genoemd, vaak gebruikt wordt, is er nog geen consensus over wat dit precies inhoudt. Onderzoekers en zorgprofessionals gebruiken diverse benaderingen met diverse, bijbehorende meetinstrumenten. Desondanks is men het er wel over eens dat kwetsbaarheid leidt tot negatieve gezondheidsuitkomsten. Onderzoek laat zien dat kwetsbare ouderen een verhoogd risico hebben op bijvoorbeeld overlijden, opname in een ziekenhuis en beperkingen in het uitvoeren van dagelijkse activiteiten (ADL). Om dit te voorkomen en mensen te ondersteunen of een behandeling aan te bieden, is het van belang dat we ouderen die kwetsbaar zijn goed kunnen identificeren. Op die manier worden mensen niet onterecht als kwetsbaar aangemerkt. Als namelijk de verkeerde groep mensen behandeld wordt zal het effect van een eventuele behandeling minimaal zijn en zullen de zorgkosten onnodig stijgen. Daarentegen zullen kwetsbare mensen die de zorg wel nodig hebben, deze wellicht niet ontvangen wanneer ze verkeerd gediagnostiseerd worden. De doelen van dit proefschrift zijn: (1) het verkrijgen van meer inzicht in de functionele profielen die behoren bij verschillende stadia van kwetsbaarheid; (2) het onderzoeken welke beschermende factoren het pad van kwetsbaarheid naar (verdere) negatieve gezondheidsuitkomsten kunnen beïnvloeden; en (3) het vergroten van de kennis van psychometrische eigenschappen van veelgebruikte vragenlijsten die kwetsbaarheid meten.
Background: Previous studies found that 40-60% of the sarcoidosis patients suffer from small fiber neuropathy (SFN), substantially affecting quality of life. SFN is difficult to diagnose, as a gold standard is still lacking. The need for an easily administered screening instrument to identify sarcoidosis-associated SFN symptoms led to the development of the SFN Screening List (SFNSL). The usefulness of any questionnaire in clinical management and research trials depends on its interpretability. Obtaining a clinically relevant change score on a questionnaire requires that the smallest detectable change (SDC) and minimal important difference (MID) are known. Objectives: The aim of this study was to determine the SDC and MID for the SFNSL in patients with sarcoidosis. Methods: Patients with neurosarcoidosis and/or sarcoidosis-associated SFN symptoms (N=138) included in the online Dutch Neurosarcoidosis Registry participated in a prospective, longitudinal study. Anchor-based and distribution-based methods were used to estimate the MID and SDC, respectively. Results: The SFNSL was completed both at baseline and at 6-months’ follow-up by 89/138 patients. A marginal ROC curve (0.6) indicated cut-off values of 3.5 points, with 73% sensitivity and 49% specificity for change. The SDC was 11.8 points. Conclusions: The MID on the SFNSL is 3.5 points for a clinically relevant change over a 6-month period. The MID can be used in the follow-up and management of SFN-associated symptoms in patients with sarcoidosis, though with some caution as the SDC was found to be higher.
Aims and objectives: To determine a valid, reliable and clinical userfriendly instrument, based on predictors of functional decline, to identify older patients at risk for functional decline. The predictors of functional decline are initially considered and, subsequently, the characteristics and psychometric qualities of existing screening instruments are investigated. Background: Functional decline is a common and serious problem in older hospitalized patients, resulting in a change in quality of life and lifestyle. Studies have shown that 3060% of older people develop new dependencies in activities of daily living (ADL) during their hospital stay. Adverse health outcomes such as mortality, a prolonged hospital stay, nursing home placement and increased dependency of older people at home are the results. Not only are the personal costs high but also, in a rapidly growing older population, the impact on health-care costs is also high. Results: Age, lower functional status, cognitive impairment, preadmission disability in instrumental activities of daily life (IADL), depression and length of hospital stay were identified as predictors of functional decline. Three screening instruments to identify hospitalized patients at risk for functional decline were found in the literature: the Hospital Admission Risk Profile, the Identification of Seniors at Risk and the Care Complexity Prediction Instrument. The reported validity was moderate. Reliability and the ease of use in the clinical setting were not well described. Conclusion.: These three instruments should be further tested in a hospitalized older population. Relevance to clinical practice. Screening is a first step to identify patients at risk for functional decline and this will make it possible to treat patients who are identified so as to prevent functional decline. Because of their ability to observe and to guide the patients and the overall view they have, nurses play a key role in this process.
