Baseline characteristics of each article were obtained and efficacy measures analyzed (morphine equivalent treatment at 24, 48, and 72 h postoperatively, complications (vomiting/nausea and pruritus), length of hospital stay (days); and pain score (VAS)) (Review Manager 5.4 software package).



Review Manager
A PubMed search of studies published over the last 20 years using the descriptor/terms "ketamine AND scoliosis" was performed. 
PubMed