Sensor drift is a well-known disadvantage of electronic nose (eNose) technology and may affect the accuracy of diagnostic algorithms. Correction for this phenomenon is not routinely performed. The aim of this study was to investigate the influence of eNose sensor drift on the development of a disease-specific algorithm in a real-life cohort of inflammatory bowel disease patients (IBD). In this multi-center cohort, patients undergoing colonoscopy collected a fecal sample prior to bowel lavage. Mucosal disease activity was assessed based on endoscopy. Controls underwent colonoscopy for various reasons and had no endoscopic abnormalities. Fecal eNose profiles were measured using Cyranose 320®. Fecal samples of 63 IBD patients and 63 controls were measured on four subsequent days. Sensor data displayed associations with date of measurement, which was reproducible across all samples irrespective of disease state, disease activity state, disease localization and diet of participants. Based on logistic regression, corrections for sensor drift improved accuracy to differentiate between IBD patients and controls based on the significant differences of six sensors (p = 0.004; p < 0.001; p = 0.001; p = 0.028; p < 0.001 and p = 0.005) with an accuracy of 0.68. In this clinical study, short-term sensor drift affected fecal eNose profiles more profoundly than clinical features. These outcomes emphasize the importance of sensor drift correction to improve reliability and repeatability, both within and across eNose studies.

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Older care recipients living at home increasingly rely on support from informal caregivers, who often combine their caregiving tasks with a paid job. Because of this combination of tasks, working caregivers may become overloaded. Different caregiver support options are available, that also affect older care recipients’ lives, such as respite care, technology, or home care. The aim of this qualitative study was to obtain insight into the perceptions, concerns and preferences of older informal care recipients about the use of support to relieve their working informal caregivers. We performed a story completion writing task among 23 informal care recipients aged 65 years or older, using hypothetical situations to let participants reflect on different caregiver relief support options. The task was followed-up by a story-mediated interview. We used thematic analysis to inductively analyze story completions and interviews. We found that older adults were often willing to use support to relieve their caregivers, to ensure their wellbeing. However, they were also concerned about how the use of such support may conflict with their interests, preferences and values (e.g. respect for their autonomy, privacy, having a trusting relationship with caretakers, paying attention to human aspects in care). Older adults were most hesitant to use adult day care facilities and technological support options. While these areas of tension cannot always be completely resolved, it is important to jointly identify and discuss these, and work towards solutions to balance the respective interests, values and needs of older adults and caregivers.

Older care recipients living at home increasingly rely on support from informal caregivers. As informal caregivers often combine these caregiving tasks with other tasks, such as paid work, they are at risk of becoming overloaded. To decrease informal caregiver burden, different forms of support are available that also affect older care recipients’ lives, such as respite care, technology, or home care. The aim of this qualitative study was to obtain more insight into the perceptions, potential concerns and preferences of older informal care recipients about the use of support to relieve informal caregivers. We performed a story completion writing task among 23 informal care recipients aged 65 years or older, using hypothetical situations to let them reflect on different caregiver relief support options. The task was followed-up by a story-mediated interview. We used thematic analysis to inductively analyze story completions and interviews. We found that older informal care recipients were often willing to use support to relieve their caregivers, to ensure their wellbeing. However, they were also concerned about how the use of such support may conflict with their interests, preferences and values (e.g. respect for their autonomy, privacy, having a trusting relationship with a caretaker, paying attention to human aspects in care). Older adults were most hesitant to use adult day care facilities and technological support options. While these areas of tensions cannot always be completely resolved, it is important to jointly identify and discuss these, and work towards solutions to balance the respective interests, values and needs of older adults and caregivers. Health and social care professionals and older adults’ personal networks may help in overcoming hesitation to use support.