Table 2.

Comparison of proposed Nasal/oral SQI method with conventional nasal alone method on RR measurement.

RR	RMSE	Bland–Altman	Pearson Correlation
Nasal or oral SQI and MUSIC	1.73	The 95% limits of agreement -2.97 to 3.67 bpm ($\sigma =1.68$)	0.89
Nasal and FFT	3.98	The 95% limits of agreement -7.60 to 7.99 bpm ($\sigma =3.98$)	0.53