Baigarayeva, Z. , Boltaboyeva, A. , Kozhamberdiyeva, M. , Dikhanbayeva, G. and Amirkhanova, G. 2025. Environmental factors and their influence on heart rate variability for cardiovascular disease risk classification: A machine learning approach. International Journal of Innovative Research and Scientific Studies. 8, 4 (Jul. 2025), 2365–2376. DOI:https://doi.org/10.53894/ijirss.v8i4.8391.