Predicting the Socio Economic Status of end Users of a Maternal Health App by Machine Learning Topics: Data Visualization; eHealth Applications; Integration and Scaling-up of Healthcare IT in Real Care Settings; Mobile Technologies for Healthcare Applications; Pattern Recognition and Machine Learning In Proceedings of the 16th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 5: BIOSTEC, 86-93, 2023 , Lisbon, Portugal