[Long-term Survival in Hospitalized Patients with Lung Cancer among Peasants 
in the Coal-producing Area in Eastern Yunnan, China].

The lower lung cancer survival rate among peasants is associated with their lower socioeconomic status, lower proportion of early-stage diagnoses, lower proportion of surgical interventions, and treatment at provincial-level hospitals. Furthermore, the impact of other factors such as high-risk exposure to bituminous coal pollution on survival prognosis requires further investigation.