2020 No https://www.sciencedirect.com/science/article/abs/pii/S0048969720382796?via%3Dihub Deng, Xinlei North America Modeling Students Elementary (K-5) Carbon Dioxide (CO2) Carbon Monoxide (CO) Volatile Organic Compounds (VOCs) Noise Fungi Asthma Allergy Home and school environment Machine learning Risk factors The top contributing factors identified for asthma were family rhinitis history (relative importance: 10.40%), plant pollen trigger (5.48%); bedroom carpet (3.58%); environmental tobacco smoke (ETS) trigger symptom (2.98%); and ETS exposure (2.56%). For allergy-related symptoms, plant pollen trigger (10.88%), higher paternal education (7.33%), bedroom carpet (5.28%), family rhinitis history (4.78%), and higher maternal education (4.25%) were the strongest contributing factors. Conversely, primary heating with hot water radiator was negatively (−6.86%) associated with asthma symptoms. Younger children (<9 years old) with family history of rhinitis and carpeting in the bedroom were the prominent combined risk factors for asthma. Children jointly exposed to pollen, solvents, and carpeting in their home tended to have greater risks of allergy-related symptoms, even without family history of rhinitis.