Operative room time
Two of the included studies evaluated the operative RT. Stelter et al.
found that the operations lasted for an average of 16 min longer with
the aid of IGS than with conventional ESS. Singh et al. documented a
smaller difference: (IGS group 165.68 ± 6.55 (mean ± SE); ESS group
163.33 ± 5.43).29,31