Internet of things-based health monitoring system for early detection of cardiovascular events during COVID-19 pandemic

Table 5 Positive prediction value of detection of the proposed system by cardiac arrhythmia classes

Class No.	LSTM	RST-LSTM	Class No.	LSTM	RST-LSTM
C1	97.65	98.44	C9	NaN	NaN
C2	89.54	90.23	C10	98.49	99.83
C3	98.76	99.08	C11	NaN	NaN
C4	99.14	99.12	C12	NaN	NaN
C5	98.26	98.74	C13	NaN	NaN
C6	94.29	96.63	C14	98.16	98.94
C7	NaN	NaN	C15	NaN	NaN
C8	NaN	NaN	C16	87.63	89.90
Average PPV	LSTM	95.76	Average PPV	RST-LSTM	96.77

NaN: Not a number; LSTM: Long short-term memory; RST: Rough set theory; PPV: Positive prediction value.