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Ann: Positive Results for Australian Prospective Paediatric Study, page-7

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    Data from 585 patients was analysed. The age of study participants ranged from 29 days to 12
    years, 41% were female and 28% were less than two years old.
    For all predefined study endpoints, ResApp’s algorithms performed very well, achieving a
    positive percent agreement (PPA) between 79% and 97% and a negative percent agreement
    (NPA) between 80% and 91% when compared to a clinical diagnosis. The results for
    asthma/reactive airway disease (RAD) were exceptional, with a PPA of 97% and an NPA of 91%.
    Asthma/RAD diagnosis is typically performed in the clinic using an inhaled bronchodilator test,
    which is time consuming and costly. For pneumonia, a disease that is responsible for the death
    of more children under five than any other disease, ResApp’s algorithms delivered a PPA of 87%
    and an NPA of 85%. For lower respiratory tract disease, a key diagnosis for telehealth
    consultations in particular, ResApp’s algorithms yielded a PPA of 83% and an NPA of 82%. While
    a shortage of patients under two without bronchiolitis limited the statistical robustness of the
    study’s bronchiolitis results, the algorithm’s performance was again excellent with PPA and NPA
    both above 80%.
    According to Dr Paul Porter, MBBS, FRACP, the study principal investigator at Joondalup Health
    Campus and Princess Margaret Hospital, “Even with all the information available to us in a
    modern, well-equipped hospital we still face difficulties in diagnosing childhood respiratory
    diseases. These excellent prospective results, obtained without the need to examine the patient
    ResApp Health Limited ABN 51 094 468 318
    Headquarters: Level 8, 127 Creek St, Brisbane QLD 4000 Australia
    Registered Office: Level 24, 44 St Georges Tce, Perth WA 6000 Australia
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    or perform investigations, will give clinicians significantly more confidence in their diagnosis of
    respiratory disease, especially in telehealth and emergency department settings. I am grateful
    to all the patients who participated in the study, as well as the clinical research teams at
    Joondalup Health Campus and Princess Margaret Hospital who showed great expertise and
    dedication in performing the study.”
    A summary of the number of patients with each disease, PPA and NPA for the study endpoints
    is presented in the table below.
    Patients3 Positive Percent
    Agreement
    Negative Percent
    Y N Agreement
    Lower respiratory tract disease1 419 154
    83%
    (95% CI, 79-86%)
    82%
    (95% CI, 75-88%)
    Asthma/reactive airway disease1 149 381
    97%
    (95% CI, 92-99%)
    91%
    (95% CI, 88-94%)
    Croup2 68 500
    88%
    (95% CI, 78-95%)
    86%
    (95% CI, 82-89%)
    Pneumonia1 60 509
    87%
    (95% CI, 75-94%)
    85%
    (95% CI, 82-88%)
    Primary upper respiratory tract
    disease1
    89 482
    79%
    (95% CI, 69-87%)
    80%
    (95% CI, 76-83%)
    Bronchiolitis1
    (patients aged < 2 years old)
    131 26
    84%
    (95% CI, 77-90%)
    81%
    (95% CI, 61-93%)
    1. ResApp algorithm includes cough audio and patient reported symptoms as input.
    2. ResApp algorithm includes cough audio as input only.
    3. Number of patients clinically diagnosed as having disease (Y) or not having disease (N).
    “The outstanding results delivered by the Breathe Easy prospective study are consistent with
    our expectations, and for diseases such as pneumonia and asthma have even exceeded our
    expectations. This formal confirmation of ResApp’s algorithms’ robust performance will allow us
    to provide key diagnostic products in an array of clinical settings, especially in telehealth - one of
    the fastest growing segments in healthcare - where up to 50% of consultations are respiratory
    related”, said Tony Keating, CEO and Managing Director of ResApp. “We now have a solid
    dataset to underpin our forthcoming CE mark and TGA submissions which will propel the
    commercialisation of our products in Europe, Australia and the rest of the world outside the US.
    The successful completion of Breathe Easy also gives us additional data, experience and​
    confidence as we finalise our US SMARTCOUGH-C-2 study.”
 
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