Meta-Analysis of the Correlation between Postoperative Cognitive Dysfunction and Intraoperative Cerebral Oxygen Saturation

Table 1

Literature quality evaluation.

The first author	Year		Type of surgery	NOS score
Schmittel	2016	87	Spinal operation	6
Hanna	2008	100	Cardiosurgery	8
Lara	2014	50	Intestinal surgery	6
Noda	2015	78	Knee prosthesis	6
Zatloukal	2016	168	Gastric operation	6
Shi Y	2012	69	Hip surgery	6
Rong Lin	2012	46	Hip surgery	6