Fig. 3

Survival curves. a Survival time from development of AE-IIPs or pneumonia among idiopathic, all triggered (infection-triggered and non-infection-triggered) AE-IIPs, and pneumonia superimposed on CF-IIPs. Blue, green, and black lines indicate the number of patients and survival for idiopathic, all triggered AE-IIPs, and pneumonia superimposed on CF-IIPs, respectively. p-value was calculated using the log-rank test. b Difference in survival time from AE-IIPs onset. Blue, red, and purple lines indicate the number of patients and survival for idiopathic, non-infection-triggered, infection-triggered AE-IIPs, respectively. p-value was calculated using the log-rank test