The Tambua App is revolutionalizing Lower Respiratory Tract Infection Diagnostic tools.
What is the Tambua App?
We developed the Tambua App which is a smartphone application for diagnosing Tuberculosis and Pneumonia. We are leveraging the abundance of smartphones in Africa to turn them into diagnostic tools. The Tambua app is very easy to use, the users record their cough in a quiet room without any extraneous noise. Takes at least 4 cough samples for 12 seconds. The users then record their symptoms, risk factors, clinical information and demographics. The app analyses the recorded cough sound. It then uses the machine learning algorithms developed by our team to classify the cough pattern. A process that would have taken 3 weeks or more is now taking minutes, the Tambua app is 83% sensitive, non-invasive, cheap and fast. Our Tambua App goes beyond diagnosis to patient engagement where we connect infected personnel to clinics and public health officials and offer digital patient medical response tracking through digital therapeutic technology.
Get to know more about the technology and the process.
The design of the Tambua diagnosis system includes the implementation of an automatic cough segmenter (annotator) to detect cough episodes within continuous recordings in a controlled environment. Hidden Markov models (HMMs) are used for this purpose. The HMM system are designed to detect three sound events (cough, silence and other), with a reported frame accuracy of 87.16%. For the audio based classifier the Logistic regression algorithm is implemented. For classification of the clinical (meta) data, logistic regression algorithm is also used. The best system after feature selection was then combined with the best meta data classifier using logistic regression as a fusion method. This led to a system with a sensitivity, specificity, accuracy, AUC and kappa of 82.35%,80.95%,81.58%,94.34% and 0.6867 respectively. The Tambua App Keeps relevant patient information in a digital profile to de-clutter and optimize working environments and also track patient recovery over the course of treatment.
Advantages of the Tambua Application
It is a non-invasive method of diagnosis of Lower Respiratory Tract Infections. We do not introduce objects in bodies of people
It is cheap and accessible. Smartphones are readily available and very cheap to acquire
It is essential in the mapping and mitigation of Lower Respiratory Tract Infections