Missed paranasal sinuses
Three of the included studies evaluated the number of diseased paranasal sinuses that should have been opened during surgery but were missed. The data were combined into a meta-analysis and are presented in Figure 3. Due to high heterogeneity, a random-effects model was used to estimate the RR. A statistically significant lower incidence of missed paranasal sinuses in the IGS group was demonstrated by the RR 0.19 [0.04, 0.085] 95% CI p=0.03.28,31,32