Recommendation 5.1	Quality of the evidence	Strength of recommendation
We suggest Index-based EEG monitoring depth of anaesthesia guidance to decrease the risk of POD.	Low Chan et al., 2013129 Radtke et al., 2013130 Whitlock et al., 2014131 Zhou et al., 2018132 Wildes et al., 2019133 Tang et al., 2020134 Evered et al., 202122 Wang et al., 2022135	Weak