Katarzyna Wac

Katarzyna Wac
University of Geneva | UNIGE · University Centre for Informatics

Professor

About

193
Publications
29,572
Reads
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2,323
Citations
Additional affiliations
November 2018 - November 2020
Stanford Medicine
Position
  • Professor
May 2017 - August 2017
Stanford Medicine
Position
  • Visiting Scholar
June 2016 - August 2016
Stanford Medicine
Position
  • Researcher

Publications

Publications (193)
Conference Paper
Full-text available
Much research in ubiquitous computing assumes that a user's phone will be always on and at-hand, for collecting user context and for communicating with a user. Previous work with the previous generation of mobile phones has shown that such an assumption is false. Here, we investigate whether this assumption about users' proximity to their mobile ph...
Conference Paper
Stress condition, if experienced for an extended amount of time, can negatively affect individual's health. Several external sensors monitoring different physiological states correlated with stress, or smartphone apps that monitor individuals context, have been leveraged to assess stress state in everyday life. The less intrusive ''human-smartphone...
Article
Inevitably, as basic human needs are assured in any developed society, differentiating factors for quality of life (QoL) relate to a greater capacity to make informed decisions across daily life activities, especially those related to health. The availability of powerful, personalized, and wearable mobile devices facilitates the provision of ubiqui...
Article
Earlier studies show frail seniors often experience loneliness and depression. Moreover, frailty can lead problems with medication and nutrition patterns. The availability of family care and/or nursing care at home is limited. Digital companions, such as social robots, could complement homecare nurses, thereby improving the quality of care to frail...
Article
Full-text available
Ventricular arrhythmia (VA) is a leading cause of sudden death and health deterioration. Recent advances in predictive analytics and wearable technology for behavior assessment show promise but require further investigation. Yet, previous studies have only assessed other health outcomes and monitored patients for short durations (7–14 days). This s...
Article
Ontologies are commonly used as a strategy for knowledge representation. However, they are still presenting limitations to model domains that require broad forms of temporal reasoning. This study is part of the Onto-mQoL project and was motivated by the real need to extend static ontologies with diverse time concepts, relations and properties, whic...
Book
Full-text available
Describes technological methods and tools for objective and quantitative assessment of quality of life (QoL) Appraises technology-enabled methods for incorporating QoL measurements in medicine Highlights the success factors for adoption and scaling of technology-enabled methods
Chapter
Mobile network connectivity enables individuals to use various Internet-based applications and is nowadays an integral part of the physical environment. More specifically, this connectivity shapes individuals’ modes of gathering information and their communication capabilities. In turn, this impacts the individual’s decision-making and, in the long...
Chapter
Daily behaviors influence an individual’s health and, in turn, all the domains of their quality of life (QoL). Accurately quantifying these behaviors may allow individuals to improve their overall awareness of these behaviors, make necessary habit changes, and receive more individualized treatment approaches. Currently, self-reported patient-report...
Article
Full-text available
AimsProxy reports are often used when patients are unable to self-report. It is unclear how proxy measures are currently in use in adult health care and research settings. We aimed to describe how proxy reports are used in these settings, including the use of measures developed specifically for proxy reporting in adult health populations.Methods We...
Technical Report
Full-text available
Program duševnega zdravja in dobrega počutja raziskovalcev 11. oktober 2021 Dokument je bil odobren za objavo 8. oktobra 2021. Dokument je objavljen pod licenco CC BY 4.0 license: https://creativecommons.org/licenses/by/4.0/
Chapter
Quality of life (QoL) refers to an individual’s well-being including their physical and psychological health, social relationships, and environmental domains. Current assessments of QoL are mostly qualitative and infrequent, following a self-reported approach. However, the recent widespread availability of personalized and miniaturized technologica...
Technical Report
Full-text available
L'acció ReMO COST és una xarxa amb participants de tots els nivells de la comunitat investigadora, i ha elaborat un Manifest de salut mental i benestar dels investigadors per evaluar com es pot nodrir i mantenir la bona salut mental i el benestar dels investigadors mitjançant iniciatives a nivell polític, institucional, comunitari i individual. Aq...
Article
Full-text available
Introduction Physician interpersonal competence is crucial for patient care. How interpersonal competence develops during undergraduate medical education is thus a key issue. Literature on the topic consists predominantly of studies on empathy showing a trend of decline over the course of medical school. However, most existing studies have focused...
Technical Report
Full-text available
The ReMO COST Action is a network of stakeholders from all levels of the research community that has drafted a Researcher Mental Health and Well-being Manifesto that calls for the assessment of how the mental health and well-being of researchers can best be nourished and sustained through actions and initiatives at the policy, institutional, commun...
Technical Report
Full-text available
La Acción ReMO del programa COST es una red de colaboradores de todos los niveles de la comunidad científica que ha redactado un Manifiesto sobre la salud mental y el bienestar de los investigadores que requiere la evaluación sobre cómo se pueden nutrir y fomentar de la mejor forma la salud mental y el bienestar, a través de acciones e iniciativas...
Technical Report
Full-text available
عبارة عن شبكة من أصحاب المصلحة من جميع مستويات المجتمع البحثي التي قامت بصياغة بيان للباحث عن الصحة العقلية والرفاهية والذي يدعو إلى تقييم أفضل طريقة لتغذية واستدامة الصحة العقلية للباحثين ورفاهيتهم من خلال الإجراءات والمبادرات على مستوى السياسات والمؤسسات والمجتمعات والأفراد. يدعو هذا البيان جميع أصحاب المصلحة في النظام البحثي إلى المشاركة في تطوي...
Article
Background Wearables have been used widely for monitoring health in general, and recent research results show that they can be used to predict infections based on physiological symptoms. To date, evidence has been generated in large, population-based settings. In contrast, the Quantified Self and Personal Science communities are composed of people...
Article
Personalized drug delivery systems (PDDS), implying the patient-tailored dose, dosage form, time of administration and drug release kinetics, and digital health platforms for diagnosis and treatment monitoring, patient adherence, and traceability of drug products, are emerging scientific areas. Both fields are advancing at a fast pace. However, des...
Preprint
Full-text available
Background: Wearables have been used widely for monitoring health in general and recent research results show that they can be used for predicting infections based on physiological symptoms. So far the evidence has been generated in large, population-based settings. In contrast, the Quantified Self and Personal Science communities are comprised of...
Preprint
BACKGROUND Wearables have been used widely for monitoring health in general, and recent research results show that they can be used to predict infections based on physiological symptoms. To date, evidence has been generated in large, population-based settings. In contrast, the Quantified Self and Personal Science communities are composed of people...
Article
Full-text available
Inactivity, lack of sleep, and poor nutrition predispose individuals to health risks. Patient-Reported Outcomes (PROs) assess physical behaviours and psychological states but are subject of self-reporting biases. Conversely, wearables are an increasingly accurate source of behavioural Technology-Reported Outcomes (TechROs). However, the extent to w...
Article
Full-text available
Progressively, smartphones have become the pocket Swiss army knife for everyone. They support their users needs to accomplish tasks in numerous contexts. However, the applications executing those tasks are regularly not performing as they should, and the user-perceived experience is altered. In this paper, we present our approach to model and predi...
Article
Full-text available
Background: Ecological momentary assessment (EMA) enables individuals to self-report their subjective momentary physical and emotional states. However, certain conditions, including routine observable behaviors (eg, moods, medication adherence) as well as behaviors that may suggest declines in physical or mental health (eg, memory losses, compulsiv...
Article
Full-text available
The collection of participant data ‘in the wild’ is widely employed by Human-Computer Interaction researchers. A variety of methods, including experience sampling, mobile crowdsourcing, and citizen science, rely on repeated participant contributions for data collection. Given this strong reliance on participant data, ensuring that the data is compl...
Chapter
‘Patient Safety' tries to increase safety and transparency within healthcare systems for both patients and professionals. Within the healthcare sector, workflows become more and more complex, while time and money become scarce. As a consequence, the risk awareness, fault management and quality aspects become more important. One of the most well est...
Article
Full-text available
This paper examines the predictive value of peer’s observations of an individual, applied to computational models of certain states of that individual. In a study of 28 days, 13 participants provided self-assessments about their level of stress, fatigue, and anxiety, while their smartphone passively recorded the sensor’s data. Simultaneously, their...
Article
Full-text available
Human subject studies with mobile users are widely used to understand, and model, human aspects such as behaviours and preferences, in the lab and in the wild. These studies usually employ mixed methods, collecting data by active participation and passive sensing using interactive, mobile, wearable, and ubiquitous devices. Researchers rely on a sof...
Article
Full-text available
A leading risk factor for chronic disease is physical inactivity. In efforts to assess physical activity and inform designs for prevention, health professionals currently use inexpensive, but subjective validated scales, or objective, but expensive research-grade wearables. In the meanwhile, individuals increasingly use affordable consumer-friendly...
Article
Full-text available
Sleep deprivation is a prevalent and rising health concern, one with known effects on blood glucose (BG) levels, mood, and calorie consumption. However, the mechanisms by which sleep deprivation affects calorie consumption (e.g., measured via self-reported types craved food) are unclear, and may be highly idiographic (i.e., individual specific). Si...
Article
Full-text available
For most women of reproductive age, assessing menstrual health and fertility typically involves regular visits to a gynecologist or another clinician. While these evaluations provide critical information on an individual’s reproductive health status, they typically rely on memory-based self-reports, and the results are rarely, if ever, assessed at...
Article
Full-text available
New, multi-channel personal data sources (like heart rate, sleep patterns, travel patterns, or social activities) are enabled by ever increased availability of miniaturised technologies embedded within smartphones and wearables. These data sources enable personal self-management of lifestyle choices (e.g., exercise, move to a bike-friendly area) an...
Conference Paper
Full-text available
There is substantial evidence on the relevant factors that motivate participation in human subject studies and the expectations of participants when sharing their health data for research. However, most human subject studies focus on participant eligibility and data collection, omitting even a rudimentary use of the factors that motivate participat...
Article
Full-text available
Background: Diverse wellness-promoting mobile health technologies, including mobile apps and wearable trackers, became increasingly popular due to their ability to support patients' self-management of health conditions. However, the patient's acceptance and use depend on the perceived experience and the app appropriateness to the patient's context...
Conference Paper
Individuals increasingly use mobile, wearable, and ubiquitous devices capable of unobtrusive collection of vast amounts of scientifically rich personal data over long periods (months to years), and in the context of their daily life. However, numerous human and technological factors challenge longitudinal data collection, often limiting research st...
Preprint
BACKGROUND Ecological momentary assessment (EMA) enables individuals to self-report their subjective momentary physical and emotional states. However, certain conditions, including routine observable behaviors (eg, moods, medication adherence) as well as behaviors that may suggest declines in physical or mental health (eg, memory losses, compulsive...
Article
Full-text available
Humanoid social robots have an increasingly prominent place in today’s world. Their acceptance in social and emotional human–robot interaction (HRI) scenarios depends on their ability to convey well recognized and believable emotional expressions to their human users. In this article, we incorporate recent findings from psychology, neuroscience, hu...
Presentation
Full-text available
We aim at defining the requirements and design implications for mobile information technologies, embraced in smartphones and wearables devices that support the QoL / Patient Reported Outcomes (PROs) assessment by operationalizing these via Technology-enabled Reported outcomes (Tech-ROs). We discuss examples of currently researched or operational te...
Conference Paper
Full-text available
We discuss two methods designed to increase the accuracy of human-labeled data. First, Peer-ceived Momentary Assessment (Peer-MA), a novel data collection method inspired by the concept of Observer Reported Outcomes in clinical care. Second, mQoL-Peer, a platform aiming to equip researchers with tools to assess and maintain the accuracy of the data...
Conference Paper
Nowadays, the app stores host a variety of mobile health solutions. Smartphone users can choose from tens of thousands of applications, designed to prevent or manage certain diseases, or induce behavior change to improve health and life quality in general. However, the value of most applications remains unclear, as they stop short from documenting...
Conference Paper
Full-text available
Smartphones are personal ubiquitous devices that provide an immense source of information via diverse applications (apps) that contribute to our decision-making process throughout the day and improve our quality of life in the long term. In the past, an app only had one or a few specific functions, while nowadays, given the same interface, an app p...
Conference Paper
Full-text available
Ubicomp/HCI researchers are increasingly using smartphones to collect human-labelled data 'in the wild'. While this allows for the collection of a wide range of interesting data in authentic settings and surroundings, humans are notoriously inconsistent in the quality of their contributions. Improving the quality of data collected with mobile devic...
Article
Full-text available
Background Stress has been shown to impact adversely on multiple facets critical to optimal performance. Advancements in wearable technology can reduce barriers to observing stress during surgery. This study aimed to investigate the association between acute intraoperative mental stress and technical surgical performance. Methods Continuous electr...
Data
Appendix S1 Heart rate variability: definitions and formulas
Preprint
Full-text available
Health-related data analysis plays an important role in self-knowledge, disease prevention, diagnosis, and quality of life assessment. With the advent of data-driven solutions, a myriad of apps and Internet of Things (IoT) devices (wearables, home-medical sensors, etc) facilitates data collection and provide cloud storage with a central administrat...
Conference Paper
Health-related data analysis plays an important role in self-knowledge, disease prevention, diagnosis, and quality of life assessment. With the advent of data-driven solutions, a myriad of apps and Internet of Things (IoT) devices (wearables, home-medical sensors, etc) facilitates data collection and provide cloud storage with a central administrat...
Presentation
Full-text available
Presentation slides for the position paper "Visions and Challenges in Managing and Preserving Data to Measure Quality of Life" presented on September 3rd, Trento, Italy during The 4th International Workshop on Data-driven Self-regulating Systems (DSS 2018), included in the proceedings of 2018 IEEE 3rd International Workshops on Foundations and App...
Preprint
Full-text available
For most women of reproductive age, assessing menstrual health and fertility usually involves regular visits to a gynecologist or another clinician. While these exams provide critical information on an individual's reproductive health status, they typically rely on personal memory, and the results are rarely, if ever, assessed at the population lev...
Preprint
BACKGROUND Smartphones are getting more and more ubiquitous every day, and are getting closer to our everyday life, being the last thing used before going to sleep and the first one after waking up. This strong correlation between our lifestyle choices and smartphone interaction patterns enables to use them as sensors for sleep duration assessment,...
Book
Full-text available
Addresses the motivation and enablers for digital health innovations Contextualizes the application, technical considerations, as well as socio-psycho-economical ones influencing many digital health technologies’ acceptance and widespread use Presents a comprehensive state-of the-art approach to digital health technologies and practices
Article
Background: Research and history have largely shown the covert billion-dollar global market of single-use medical device (SUD) reprocessing and reuse to be a safe endeavor, but awareness and perceptions of the practice both within and outside of healthcare have received limited attention. Methods: Responses for patients, physicians, and medical...
Chapter
Increasingly, healthcare can get on our wrists. Unhealthy lifestyle habits (e.g., sedentary behavior, nutrient-poor diets) result in higher levels of chronic diseases (e.g., CVD, obesity) and, paradoxically, the first step in disease management requires radical lifestyle changes, away from the unhealthy ones. These changes are difficult for patient...
Chapter
“Know Thyself” is a motto leading the Quantified Self (QS) movement, which at first originated as a “hobby project” driven by self-discovery, and is now being leveraged in wellness and healthcare. QS practitioners rely on the wealth of digital data originating from wearables, applications, and self-reports that enable them to assess diverse domains...
Chapter
Full-text available
The explosive growth of the Internet has fundamentally changed the global society. The emergence of concepts like service-oriented architecture (SOA), Software as a Service (SaaS), Platform as a Service (PaaS), Infrastructure as a Service (IaaS), Network as a Service (NaaS) and Cloud Computing in general has catalyzed the migration from the informa...
Article
Full-text available
Poor adherence with growth hormone (GH) therapy has been associated with worse clinical outcomes, which in children relates specifically to their linear growth and loss of quality of life. The “360° GH in Europe” meeting, held in Lisbon, Portugal, in June 2016 and funded by Merck KGaA (Germany), examined many aspects of GH diseases. The three sessi...
Conference Paper
Socially assistive agents, be it virtual avatars or robots, need to engage in social interactions with humans and express their internal emotional states, goals, and desires. In this work, we conducted a comparative study to investigate how humans perceive emotional cues expressed by humanoid robots through five communication modalities (face, head...
Article
Full-text available
As we embrace digital health technology applications, computing power is increasingly exploited for its capacity to improve our quality of life (QoL). Beyond wearables that capture and transmit our vitals, QoL technologies present a variety of opportunities for extending the human health span—not just how long we live, but how well we are.
Conference Paper
As a base for hypothesis formulation and testing, accurate, timely and reproducible data collection is a challenge for all researchers. Data collection is especially challenging in uncontrolled environments, outside of the lab and when it involves many collaborating disciplines, where the data must serve quality research in all of them. In this pap...
Article
The increasing presence of stress in people’ lives has motivated much research efforts focusing on continuous stress assessment methods of individuals, leveraging smartphones and wearable devices. These methods have several drawbacks, i.e., they use invasive external devices, thus increasing entry costs and reducing user acceptance, or they use som...
Article
'Patient Safety' tries to increase safety and transparency within healthcare systems for both patients and professionals. Within the healthcare sector, workflows become more and more complex, while time and money become scarce. As a consequence, the risk awareness, fault management and quality aspects become more important. One of the most well est...
Article
Mobile applications such as VoIP, (live) gaming, or video streaming have diverse QoS requirements ranging from low delay to high throughput. The optimization of the network quality experienced by end-users requires detailed knowledge of the expected network performance. Also, the achieved service quality is affected by a number of factors, includin...
Article
We analyze the users’ intimacy to investigate the differences in smartphone usage, considering the user’s location and number and kind of people physically around the user. With a first user study we (1) validate the intimacy concept, (2) evaluate its correlation to smartphone usage features and (3) we computationally model it. Shorter, more freque...
Article
Telecommunication network operators (TNOs) are seeing an exponential growth in mobile and fixed traffic, and on a growing scale need to manage (in some cases even manually) operational data silos. These silos necessitate a high degree of expensive operation that limits the ability to rapidly compose new innovative services, leads to high and expone...
Article
Full-text available
Mobile crowd sensing (MCS) assumes a collaborative effort from mobile smartphone users to sense and share their data needed to fulfill a given MCS objective (e.g., modeling of urban traffic or wellness index of a community). In this paper, we investigate the user’s perception of anonymity in MCS and factors influencing it. We conducted a 4-week ext...