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Figure 1: Overall survival curves using Kaplan– Meier estimates according to clinical variables after bronchoscopic intervention. (a) Survival curve based on pre‑bronchoscopic treatment status (P = 0.02), (b) Survival curve based on tracheal invasion of tumor (P = 0.03), (c) Survival curve based on the post‑bronchoscopic additional traetment (P < 0.01)

Figure 1: Overall survival curves using Kaplan– Meier estimates according to clinical variables after bronchoscopic intervention. (a) Survival curve based on pre‑bronchoscopic treatment status (<i>P</i> = 0.02), (b) Survival curve based on tracheal invasion of tumor (<i>P</i> = 0.03), (c) Survival curve based on the post‑bronchoscopic additional traetment (<i>P</i> < 0.01)