Table 3.

Linear regression models (simple and multiple) for % change (decrease) from baseline in cerebral oxygenation during surgery and different factors

Factor	Simple βa (95 % confidence interval)	p	Multiple βb (95 % confidence interval)	p
Gestation (weeks)	−1.18 (−2.22–(−0.15))	0.03	−0.54 (−1.73-0.64)	0.36
Age (days)	−0.18 (−0.36–(−0.01))	0.04	−0.22 (−0.45–0.01)	0.07
Preoperative mechanical ventilation (yes, no)	−8.78 (−16.67–(−0.09))	0.03	−2.16 (−10.53–6.22)	0.60
MAPminrSO2c (mmHg)	−0.41 (−0.65–(−0.18))	0.001	−0.28 (−0.52–(−0.04))	0.02

β^a:regression coefficient (simple linear regression model) for % change (decrease) from baseline in cerebral oxygenation during surgery

β^b:regression coefficient (multiple linear regression model) for % change (decrease) from baseline in cerebral oxygenation during surgery