An automated external defibrillator, AED, device having a feature for detecting at least one of a status and a quality of cardiopulmonary resuscitation, CPR, chest compressions, comprising: a front end circuit configured to obtain, via a pair of AED electrodes , at least one of (i) a stream of raw transthoracic impedance data and (ii) a stream of common-mode current data, an analysis circuit configured to (a) process the at least one of (i) the stream of raw transthoracic impedance data and (ii) the stream of common-mode current data for correlated CPR chest compression artifacts through first and second processing algorithms, wherein the first processing algorithm comprises a temporal peak detection algorithm to obtain at least one stream of detected compression event candidates and wherein the second processing algorithm comprises a frequency analysis algorithm to identify false positive compression events within the at least one stream of detected compression event candidates, and (b) remove the identified false positive compression events from the at least one stream of detected compression event candidates; and an output device configured to output an indication of at least one of a status and a quality of CPR chest compressions determined in response to the at least one stream of detected compression event candidates, devoid of the identified false positive compression events. a front end circuit configured to obtain, via a pair of AED electrodes , at least one of (i) a stream of raw transthoracic impedance data and (ii) a stream of common-mode current data, an analysis circuit configured to (a) process the at least one of (i) the stream of raw transthoracic impedance data and (ii) the stream of common-mode current data for correlated CPR chest compression artifacts through first and second processing algorithms, wherein the first processing algorithm comprises a temporal peak detection algorithm to obtain at least one stream of detected compression event candidates and wherein the second processing algorithm comprises a frequency analysis algorithm to identify false positive compression events within the at least one stream of detected compression event candidates, and (b) remove the identified false positive compression events from the at least one stream of detected compression event candidates; and (a) process the at least one of (i) the stream of raw transthoracic impedance data and (ii) the stream of common-mode current data for correlated CPR chest compression artifacts through first and second processing algorithms, wherein the first processing algorithm comprises a temporal peak detection algorithm to obtain at least one stream of detected compression event candidates and wherein the second processing algorithm comprises a frequency analysis algorithm to identify false positive compression events within the at least one stream of detected compression event candidates, and (b) remove the identified false positive compression events from the at least one stream of detected compression event candidates; and an output device configured to output an indication of at least one of a status and a quality of CPR chest compressions determined in response to the at least one stream of detected compression event candidates, devoid of the identified false positive compression events. <EOS>