Fig. 2

Forest plots of the studies comparing tumors with and without GGO and EGFR mutation (notes: events, tumors with EGFR mutation; total, all tumors with and without EGFR mutation). a No association was found between NSCLC with and without GGO content and overall EGFR mutation. b No association was found between NSCLC with and without GGO content and EGFR exon 21 mutation (L858R). c No association was found between NSCLC with and without GGO content and EGFR exon 19 deletion