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Table 3 Prediction probability (Pk) values calculated between the adapted Richmond Agitation–Sedation Scale (aRASS) and the electromyography (EMG) extracted feature. Correlation coefficient R with aRASS and with propofol effect-site (Ce) concentration. T1 and T2 are time windows from 10 to 25 ms, and from 25 to 200 ms, respectively

From: Performance of blink reflex in patients during anesthesia induction with propofol and remifentanil: prediction probabilities and multinomial logistic analysis

Parameter aRASS Correlation coefficient R with aRASS Correlation coefficient R with propofol Ce concentration
Pk SE
T1 Vmean 0.712 0.015 0.420** 0.471**
Vdiff 0.712 0.015 − 0.420** − 0.471**
Pmean 0.512 0.014 0.025 − 0.064**
Pmax 0.537 0.020 0.073 − 0.010
fmean 0.765 0.014 − 0.522** − 0.522**
Pfmean 0.531 0.019 0.062 − 0.022
fmedian 0.758 0.014 − 0.507** − 0.504**
Pband 0.529 0.019 0.058 − 0.027
Ptotal 0.512 0.014 0.025 − 0.064
Ptotal/fmedian 0.538 0.020 0.075* − 0.007
SNR 0.643 0.071 − 0.114** − 0.052
Pbandwidth 0.748 0.014 − 0.487** − 0.482**
Spectral entropy 0.771 0.013 − 0.534** − 0.535**
T2 Vmean 0.619 0.018 0.236** 0.201**
Vdiff 0.619 0.018 − 0.236** − 0.201**
Pmean 0.610 0.019 − 0.216** − 0.430**
Pmax 0.578 0.019 − 0.153** − 0.369**
fmean 0.721 0.015 − 0.437** − 0.415**
Pfmean 0.538 0.019 − 0.064 − 0.280**
fmedian 0.677 0.016 − 0.353** − 0.334**
Pband 0.599 0.018 − 0.194** − 0.416**
Ptotal 0.610 0.018 − 0.216** − 0.438**
Ptotal/fmedian 0.557 0.019 − 0.111** − 0.325**
SNR 0.679 0.020 − 0.387** − 0.452**
Pbandwidth 0.605 0.017 − 0.211** − 0.163**
Spectral entropy 0.745 0.014 − 0.485** − 0.464**
  1. Prediction probability (Pk) values calculated with pooled data from all patients (n = 25). The standard error (SE) is also shown. Rank correlation coefficient from pooled data of all patients (n = 25) is shown. *Significant at the 0.05 level. **Significant at the 0.001 level. Vmean mean amplitude, Vdiff difference between maximum and mean amplitude, Pmean mean power, Pmax maximum power, fmean mean frequency, Pmeanfrequency power at mean frequency, fmedian median frequency, Pband power band, Ptotal total integrated of the spectrum, Ptotal/fmedian ratio between total power and median frequency, SNR  signal-to-noise ratio, Pbandwidth power bandwidth