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  1. Article ; Online: Greek validation of the user version of the Mobile Application Rating Scale (uMARS)

    Georgios Chasiotis / Stoyan R Stoyanov / Anastasios Karatzas / Stavros Gravas

    Journal of International Medical Research, Vol

    2023  Volume 51

    Abstract: Objective The original user version of the Mobile Application Rating Scale (uMARS) is an English-language questionnaire that was designed to allow non-expert app users to assess the quality of health apps. We aimed to translate into the Greek language ... ...

    Abstract Objective The original user version of the Mobile Application Rating Scale (uMARS) is an English-language questionnaire that was designed to allow non-expert app users to assess the quality of health apps. We aimed to translate into the Greek language and validate the uMARS. Methods This was a qualitative prospective study. The World Health Organization translation process was followed and a readily available and free-of-charge app was used for the validation process. Internal consistency and reliability were tested twice within one month by 91 Greek medical students. Results The total uMARS score showed excellent internal consistency (Cronbach’s alpha = 0.86). The internal consistencies of its subscales were also very high (engagement alpha = 0.71; functionality alpha = 0.71; aesthetics alpha = 0.67; information alpha = 0.63), with the notable exception of the satisfaction alpha, which was 0.61. The uMARS total score demonstrated almost perfect agreement levels in most of the subscales according to the r WG index from baseline to 1 month. Conclusions The Greek uMARS is a reliable and valid tool for assessing the quality of mobile apps.
    Keywords Medicine (General) ; R5-920
    Subject code 027
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher SAGE Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: The Prognostic Role of Aortic Stiffness in Patients Hospitalized for an Acute Heart Failure Syndrome

    Sophia Giannitsi / Mara Bougiakli / Aris Bechlioulis / Anna Kotsia / Lampros Lakkas / Ioannis Girdis / Konstantinos Pappas / Georgios Chasiotis / Eleni Bairaktari / Andreas Kalogeropoulos / Lampros K. Michalis / Katerina K. Naka

    Artery Research, Vol 27, Iss

    2020  Volume 1

    Abstract: Background: Although impaired arterial function has been associated with adverse prognosis in chronic Heart Failure (HF), its role in Acute HF Syndromes (AHFS) has been little studied. We prospectively investigated the prognostic role of arterial ... ...

    Abstract Background: Although impaired arterial function has been associated with adverse prognosis in chronic Heart Failure (HF), its role in Acute HF Syndromes (AHFS) has been little studied. We prospectively investigated the prognostic role of arterial function on mortality and HF Hospitalizations (HHF) in patients with AHFS. Design and Methods: A thorough assessment of arterial function was performed in patients hospitalized for AHFS 24–48 h before discharge and followed-up for 6 months for all-cause death and HHF. MAGGIC risk score was used to evaluate the additive predictive value of vascular biomarkers for clinical events. Results: One-hundred patients were studied; aged 70 ± 11 years, 78% males, 61% had left ventricular ejection fraction ≤40% and 24% ≥50%. Mean aortic Pulse Wave Velocity (PWV) was 11.2 m/s, mean augmentation index 21% and median brachial flow-mediated dilation 3.14%. Higher PWV was associated with all-cause mortality (Hazard Ratio [HR] 1.32 per 1 m/s, p < 0.001) and the combined clinical event of mortality and HHF (HR 1.12 per 1 m/s, p = 0.012) even after adjustment for MAGGIC score. MAGGIC score predicted mortality (HR 3.40 per group increase, Area under Curve [AUC] = 0.741, p = 0.017) in our population; addition of PWV to MAGGIC score increased the predictive accuracy (AUC = 0.911, C-statistic p < 0.01 vs. MAGGIC score alone) for mortality. Conclusion: In these AHFS patients, increased aortic stiffness was independently associated with mortality and further improved the predictive accuracy of an established risk model. Further research is needed to show whether a comprehensive assessment of AHFS patients focusing both on cardiac and vascular function, may improve management and ameliorate prognosis following an AHF hospitalization. •The interaction between the heart and the arteries is a determinant of cardiovascular function. •Increased aortic Pulse Wave Velocity (PWV) predicts mortality in acute heart failure. •Aortic PWV increases predictive accuracy of MAGGIC score.
    Keywords Acute heart failure ; prognosis ; aortic stiffness ; pulse wave velocity ; pulsatile hemodynamics ; Specialties of internal medicine ; RC581-951 ; Diseases of the circulatory (Cardiovascular) system ; RC666-701
    Subject code 610
    Language English
    Publishing date 2020-10-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

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