Piezoresistive Breathing Sensing System with 3D Printed Wearable Casing

Table 9

Performances provided by other studies in this field. If a percentage is given without any other indication, that value corresponds to a relative error. If a value in breaths/min is given without any other indication, that value corresponds to an absolute error.

Study	Performance
System proposed	3.40%
Chen et al. [60]	98.65% (mean accuracy)
Patwari et al. [61]	0.1-0.4 breaths/min
Liu et al. [8]	1.8-5.7%
Massaroni et al. [57]	2%
Dziuda et al. [10]	12% (maximum)
Nam et al. [17]	<1% (median)
Heldt and Ward [68]	1.2 breaths/min
Dan et al. [4]	0.01-0.02 breaths/min (mean differences)
Taheri and Sant’Anna [31]	0.93-1.77 breaths/min
Min et al. [39]	0.0015 breaths/min (mean differences)
Massaroni et al. [41]	1.59% (RR) 14% (tidal volume)
Presti et al. [40]	0.38%
Hoffman et al. [2]	37.9% (volume)
Hesse et al. [12]	0.32 breaths/min
Lau et al. [7]	2 breaths/min
Kukkapalli et al. [30]	>95% (accuracy)
Padasdao et al. [9]	0.23-0.48 breaths/min (mean differences)