Definition 2: <12 month vs. >=12 month
There was statistically significant in operating time (MD, -27.05; 95%
Cl, −51.11 to -2.99; P=0.03), with high heterogeneity (I2=75%). The
sensitivity analysis didn’t show the noteworthy heterogeneity in the
included article. The publication bias was assessed and not detected.
In sum, to decrease the operating time, it may be well to perform the
surgery as soon as possible.